Hi, I need help with this. Thank you.

Hi, I Need Help With This. Thank You.
Hi, I Need Help With This. Thank You.
Hi, I Need Help With This. Thank You.

Answers

Answer 1

1. The solution to the quadratic equation, x² - 14x + 49 = 40, is x = 13.32 and x = 0.68

2. The solution to the quadratic equation, x² - x = 12, is x = -3 and x = 4

3. i. The factors of 2x² - 15x - 8 = 0 are (2x +1) and (x - 8)

ii. The x-intercepts of 2x² - 15x - 8 = 0 are x = -1/2 and x = 8

Solving Quadratic equations

From the question, we are to solve the given quadratic equation by completing the square.

The given equation is

x² - 14x + 49 = 40

Solving the equation

x² - 14x + 49 = 40

x² - 14x = 40 - 49

x² - 14x = -9

Multiply the coefficient of x by 1/2 square and add to both sides

x² - 14x + (-7)² = -9 + (-7)²

(x - 7)² = -9 + 49

(x - 7)² = 40

x - 7 = ±√40

x = 7 ± √40

x = 7 ± 6.32

x = 7 + 6.32 OR 7 - 6.32

x = 13.32 OR 0.68

Solving x² - x = 12 by factoring

x² - x = 12

x² - x - 12 = 0

x² -4x + 3x - 12 = 0

x(x - 4) + 3(x - 4) = 0

(x + 3)(x - 4) = 0

x + 3 = 0 OR x - 4 = 0

x = -3 OR x = 4

Determining the factors of 2x² - 15x - 8 = 0

2x² - 15x - 8 = 0

2x² - 16x + x - 8 = 0

2x(x - 8) + 1(x - 8) = 0

(2x + 1)(x - 8) = 0

The factors are (2x +1) and (x - 8)

Determining the x-intercepts

(2x + 1)(x - 8) = 0

2x + 1 = 0 and x - 8 = 0

2x = -1 and x = 8

x = -1/2 and x = 8

Hence, the x-intercepts are -1/2 and 8

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Related Questions

Please help meeee it'll be great if you guys do.

Please help meeee it'll be great if you guys do.

Answers

The equation of the CD in slope-intercept form is: C. y = -4x + 2.

How to Write an Equation in Slope-intercept Form?

The equation of a line in slope-intercept form can be written as y = mx + b. In this form, m represents the slope and b represents the y-intercept.

The slopes of lines that are parallel are equal, while the slopes of the lines that are perpendicular to each other are negative reciprocals of each other.

The slope (m) of the graph y = 1/4x - 3 is 1/4. Since AB of rectangle ABCD is perpendicular to the graph, then the slope (m) of AB would be the negative reciprocal of 1/4 which is: -4.

Also, since CD is parallel to AB, they would have the same slope, m = -4.

To find the equation of CD that is parallel to AB, substitute m = -4 and (a, b) = (-1, 6) into y - b = m(x - a):

y - 6 = -4(x - (-1))

y - 6 = -4(x + 1)

y - 6 = -4x - 4

y = -4x - 4 + 6

y = -4x + 2

Therefore, the equation of the CD in slope-intercept form is: C. y = -4x + 2.

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Another 7th grade question

Another 7th grade question

Answers

Answer:

x=16

I hope this helped

Answer:

X = 16

Step-by-step explanation:

I need a little more help :( 2/3 = ?/9 3/5 = ?/20 2/10 = ?/20 1/3 = ?/6 4/6 = ?/12

Answers

Answer:

2/3 = 6/9

3/5 = 12/20

2/10 = 4/20

1/3 = 2/6

4/6 = 8/12

En un criadero de conejos, cada mes se produce la misma variación en la
cantidad de conejos. En 4 meses la variación total fue - 120. ¿Cuál fue la
variación en cada mes?

Answers

La población del criadero de conejos reporta una tasa de crecimiento mensual de 30 conejos.

¿Cuánta es la variación mensual en la población de conejos de un criadero?

En esta pregunta tenemos la descripción de una población de conejos que crece a tasa constante tal que la población total aumenta en 120 en 4 meses. La variación mensual (r) experimentada por la población de conejos es igual al cambio total (N) dividido por el número de meses del período (T):

r = N / T

Si conocemos que N = 120 y T = 4, entonces la variación mensual es la siguiente:

r = 120 / 4

r = 30

La población aumenta a razón de 30 conejos cada mes.

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11/13
22:30
6.3%
0.55
Greatest to least

Answers

Answer:

6.3% < 0.55 < 22;30 < 11/13

Step-by-step explanation:

99
2
12
. At the library, Herb spent 1/6 hour looking for a book,1/4 hour of
reading, and 1/2 hour doing research on the computer. How man
hours did Herb spend at thelibrary?
2
3

Answers

Herb spent 55 hours at the library.

What is a fraction?

Fractions defines a part of a whole and are represented as a numerical value. A fraction can be a portion or section of any quantity out of a whole, where the whole can be any number, a specific value, or a thing.

Parts of a FractionThe denominator indicates the number of parts in which the whole has been divided into. It is placed in the lower part of the fraction below the fractional bar.The numerator indicates how many sections of the fraction are represented or selected. It is placed in the upper part of the fraction above the fractional bar.

Total time spent in the Library = 1/6 + 1/4 + 1/2

Total time spent = 11/12 x 60 mins

Total time spent = 55 hours

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figure a is a right triangle, and two of its sides have a length of 1 foot. therefore, its third side is greater than 1 foot in length.

Answers

According to the Pythagorean theorem, The Answer is Yes the third side is greater than 1 foot.

What do you mean by right angle triangle?

A right triangle is one that has an interior angle of 90 degrees. The hypotenuse, which is also the side of the right triangle that faces the right angle, is its longest side. The height and base make up the two arms of the right angle.

What is the Pythagorean Theorem?

The Pythagorean theorem, sometimes known as Pythagoras' theorem, is a basic relationship between a right triangle's three sides in Euclidean geometry. According to this statement, the areas of the squares on the other two sides add up to the size of the square whose side is the hypotenuse.

p=1 foot

b=1 foot

\(h^{2} = p ^{2} + b ^{2}\)

\(h=\sqrt {1^{2}+1^{2}}\\=\sqrt 2\\=1.41\\\)

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You and a friend went to the movies. You decide to get some snacks. You got 2 boxes of candy that cost $3.49 for each box. You also purchased a soda for $4.82. Your friend wants to share and split the cost ($5.50) of a large popcorn. How much did you spend on your snacks all together?

Answers

Answer:

$14.55

Step-by-step explanation:

that is the total cost of the snax

The converse of p q is:

Answers

q—>p is the right answer

Tashi likes teenagers but hates children, he likes running but hates walking, he likes
swimming but hates the water, he likes trees but hates flowers, he likes jeeps but hates cars
and he likes beef but hates pork. From the following what does Tashi like?

1.Onions
2.Rabbits
3.Minivans
4.Chicken​

Answers

Answer:

Chickens

Step-by-step explanation:

The 4th one I'm sorry if my answers wrong i tried to understand it and thats what i got

How many outcomes are there from rolling 3 dice

Answers

I'm pretty sure its 24-

but im not completely sure

dice have six sides and you're rolling three times, so three times six- T-T

Answer:

216

Step-by-step explanation:

lots.

You can get any one of 6 results from the first die

You can get any one of 6 results from the second die

You can get any one of 6 results from the third die.

Outcomes = 6 * 6 * 6 = 216. Try list time and you will see that there must be that many.

Suppose the first die is a weighted die such that you always get one.

Suppose the other two dice are fair ones. And they each can be anything.

Those two fair ones will give you 36

Now if you catch on to the way the first die works and trade it for a fair one, you will get 6 times 36 which is 216

Write the sentence as an equation.

106 more than the quantity 68 times y is the same as 36 decreased by y

Answers

Answer: 68y+106=36-y

please help asap (answer only if you know the question)​

please help asap (answer only if you know the question)

Answers

The Equation of bisector 5x-7y+3=0 which is a straight line.

What is bisector?

A straight line that divides an angle of a triangle in equal value.

What is perpendicular bisector?

The line that lies perpendicular to a side and goes through the midpoint of its length.

Given, coordinate H (-7,2), K (3, -4) and L (5,4)

we plot a triangle HKL with this point.

midpoint of side HK is found by (-7+3)/2 and (2-4)/2

hence, midpoint of HK is (-2,-1) is denoted by P

the perpendicular bisector of side HK means a straight line from the midpoint of HK to the point L(5,4). The bisector line PL divide the angle HLK.

so, the equation of bisector is y-y₁ = (y₂-y₁)/(x₂-x₁)[x-x₁] because the bisector line passes through the point P(-2,-1) and L(5,4)

  y-(-1) = [4-(-1)]/[5-(-2)]× [x-(-2)]

y+1 = 5/7×(x+2)

7y+7= 5x+10

5x-7y+3=0

hence, the equation of bisector is 5x-7y+3=0

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7. The new York Volleyball Association
invited 64 teams to compete in a tournament.
After each round, half of the teams were
eliminated.
How many teams are left after 3 rounds?

Answers

Using a geometric sequence, it is found that after 3 rounds, 8 teams are left.

In a geometric series, the quotient between consecutive terms is always the same, and it is called common ratio q.

The general equation of a geometric series is given by:

\(a_n = a_1q^{n-1}\)

In which \(a_1\) is the first term.

In this problem:

64 teams were invited, thus \(a_1 = 64\).After each round, half the teams are eliminated, thus \(q = \frac{1}{2}\).

The number of teams after 3 rounds is the 4th term of sequence, as the first is the initial number(0 rounds), thus:

\(a_n = a_1q^{n-1}\)

\(a_4 = 64\left(\frac{1}{2}\right)^{4-1}\)

\(a_4 = 8\)

After 3 rounds, 8 teams are left.

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Can you explain to me how did we get the answer

Can you explain to me how did we get the answer

Answers

The end behavior of the polynomials are as follows;

(a) y = x³ - 9·x² + 8·x - 14

End behavior; y → ∞ as x → ∞

\({}\)                        y → -∞ as x → -∞

(b) y = -8·x⁴ + 13·x + 800

End behavior; y → -∞ as x → -∞

\({}\)                        y → -∞ as x → ∞

What is the end behavior of a a polynomial?

The end behavior of a polynomial is the characteristics of the graph of the polynomial as the input (x-values), tends to plus and minus infinity.

The factors that effect the end behavior of a polynomial are;

The degree of the polynomial, (even or odd)

The sign of the leading coefficient of the polynomial (positive or negative)

The leading coefficient is the coefficient of the term with the highest degree.

(a) The polynomial, function, y = x³ - 9·x² + 8·x  - 14

The specified polynomial is a third degree polynomial, with a positive leading coefficient of 1, the end behavior is therefore;

y tends to positive infinity as x tends to positive infinity

y tends to negative infinity as x tends to negative infinity

End behavior;

y → ∞ as x → ∞

y → -∞ as x → -∞

(b) The polynomial function can be expressed as follows;

y = -8·x⁴ + 13·x + 800

The above polynomial of degree 4 is an even degree polynomial

The leading coefficient of the polynomial is -8, therefore, the leading coefficient is negative

The shape of the graph of the polynomial is therefore ∩ shaped, such that the end behavior is as follows;

y-values approaches negative infinity as x approaches negative infinity

y-values approaches negative infinity as x approaches positive infinity

End behavior;

y → -∞ as x → -∞

y → -∞ as x → ∞

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The ratio of girls to boys in a bicycling club was 2:3 they were 27 boys how many total members were there in the club

Answers

There were 18 girls because 27 divided by 3 is 9 so then you do 2 times 9 which is 18 :)

Answer:

45

Step-by-step explanation:

Ratio is 2girls:3boys

if there were 27 boys, we would have the following ratio:

2g    xg

--- = ---

3b     27b

To get from 3 to 27, multiply by 9.

Now, do the same for the numerator.

Now we know we have 18 girls!

We can add:

27 boys and 18 girls=

45 members!

Could u have this for me please it's a laser sub

Could u have this for me please it's a laser sub

Answers

Answer:

\(slope = \frac{y2 - y1}{x2 - x1} \\ slope = \frac{10 - 5}{20 - 15} \\ = \frac{5}{5} \\ = 1\)

What is the average of -2.5, 5.2, 1.7, and -0.8.

Answers

Answer:

0.9

Step-by-step explanation:

-2.5 + 5.2 + 1.7 + -0.8 = 3.6

Divide by the total count of numbers

= 0.9

Hope this helps!

Answer:

0.9

Step-by-step explanation:

To find the average or mean, you have to add up all the given numbers in your data set, then divide by how many numbers there are.

1. Add up -2.5 + 5.2 + 1.7 + (-0.8)=

(negative times positive equals negative)

simplify the signs

simplified answer= -2.5+5.2+1.7-0.8

Which equals

3.6

2. divide by how many numbers there are

So take 3.6 and divide it by 4.

why the number 4?

well, there are 4 numbers in the data set. so when you calculate the average, the formula would be to add up all the numbers in the data set and divide by how many numbers are in the data set and there are 4 numbers in the data set.

So... 3.6 divided by 4

is...

0.9The average is 0.9

               

You need $5 to play a game of dice. If you roll adouble, you receive $20.If you roll a sum of 10, you get $10. Otherwise, youlose your $5.Will you play this game based on the expected value.Show your work.

Answers

SOLUTION:

We start by looking at the total possible outcome for a game of dice.

We get a total of 36 outcomes.

i.e (1,1), (1,2), (1,3)....(1,6), (2,1),(2,2),...(6,6).

There is only a single chance of rolling a double at a single throw. This interpretes as 1/36

The possible combination of includes (4,6),(5,5) and (6,6). This interpretes as 3/36 or 1/12. Which is one of twelve rolls.

From the above we can conclude that to get either of the two winning option,

\(\begin{gathered} Pr(\text{double or sum of 10)} \\ =\frac{1}{36}+\frac{3}{36} \\ =\frac{4}{36} \\ =\frac{1}{9} \end{gathered}\)

Hence, you have 1 in nine chances to win double your money ($10) or $20. This means you have to play a minimum of 9 times to win one of those. This would have cost you $45.

Final answer

So, I will not play this game because the chances of winning is slim

PLEASE HELP!
I am having a hard time understanding what to do.

PLEASE HELP! I am having a hard time understanding what to do.

Answers

The simplified radical expression is given as follows:

\(\sqrt{363} - 3\sqrt{27} = 2\sqrt{3}\)

How to simplify the radical expression?

The radical expression for this problem is given as follows:

\(\sqrt{363} - 3\sqrt{27}\)

The first step in simplifying the expression is obtaining the prime factors of 363 and of 27, hence:

363 = 3 x 121 = 3 x 11².27 = 3² = 3 x 3².

Hence the radicals are simplified as follows:

\(\sqrt{363} = \sqrt{3 \times 11^2} = 11\sqrt{3}\)\(\sqrt{27} = \sqrt{3 \times 3^2} = 3\sqrt{3}\)

Hence the simplified expression is:

\(\sqrt{363} - 3\sqrt{27} = 11\sqrt{3} - 3 \times 3\sqrt{3} = (11 - 9)\sqrt{3} = 2\sqrt{3}\)

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(100+?)/100=10
How do I work this out?

Answers

Firstly, what divided by 100 would equal 10?
To work that out, 10x100=1000

This means 1000 divided by 100=10
That also means 100+?=1000

1000-100=100

?=100

Answer:

? = 900

Step-by-step explanation:

lets change ? to x

(100 + x) / 100 = 10

we will substitute /100

(100 + x) /100 · 100 = 10 · 100

100 + x = 1000

we substitute +100

100 + x -100 = 1000 - 100

x = 900

hope this helps =D happy learning!!

What is the sales price of a skateboard if the original price was $44.99 andthere is a 30% off discount? *

Answers

ANSWER

$31.49

EXPLANATION

The original price of the skateboard was $44.99

There is a 30% discount on the skateboard.

What we need to do is find 30% of the price of the skateboard and subtract that from the original price.

That is:

\(\frac{30}{100}\cdot\text{ 44.99 = \$13.50}\)

Now subtract from the original price:

Sales Price = $44.99 - $13.50

Sales Price = $31.49

while eating your yummy pizza, you observe that the number of customers arriving to the pizza station follows a poisson distribution with a rate of 18 customers per hour. on average, how many customers arrive in each 10 minutes interval?

Answers

In every 10 minutes an average of 3 customers will arrive to the pizza station

Given,

The number of customers arriving to the pizza station follows a poisson distribution with a rate of 18 customers per hour.

We have to find the average number of customers arrives in each 10 minutes.

Here,

The chance that X represents the number of successes of a random variable in a Poisson distribution is provided by the following formula:

P (X = x) = (e^-μ × μ^x) / x!

Where,

The number of successes is x.

The Euler number is e = 2.71828.

μ is the average over the specified range.

Now,

Rate of 18 customers per hour;

μ = 18 n

n is the number of hours.

Number of customers arrive in each 10 minutes

10 minutes = 10/60 = 1/6

Then,

μ = 18 x 1/6 = 3

That is,

In every 10 minutes an average of 3 customers will arrive to the pizza station.

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Is 2/3 and 6/10 equivalent or non-equivalent​

Answers

Answer:

not

Step-by-step explanation:

Answer:

non-equivalent

Step-by-step explanation:

the equivalend fraction of \(\frac{2}{3}\) is \(\frac{6}{9}\) not \(\frac{6}{10}\)

Estimate the difference of 621 - 267
by rounding to the nearest hundred.

Answers

Answer:

300

Step-by-step explanation:

621 rounds to 600 because 21 is smaller than 50. 267 round to 300 since 67 is bigger than 50.

600-300=300

I have found the answer by going to the nearest hundred and making 600 and the I rounded 267 up because it is five or more so it will be rounded to 300 and then you subtract 600-300 and the answer will be 300

Supposed you invest 1000 at 9% interest, compound monthly . Find the amount you have after 18 months

Answers

The amount you have after 18 months is $ 1143.96 .

what is compound interest?

Interest that is added to a loan or deposit sum is known as compound interest. In our daily lives, it is the notion that is employed the most frequently. Compound interest is calculated for a sum using the principal and interest accrued over time. Compound interest and simple interest differ primarily in this way.

\(A=P {(1 +\frac{r}{n})^{nt} }\)

Given:

P = 1000 , r in decimal  = 0.09 ,

n = 12 ,  t = 1.5 ( 18 months = one and a half years).

Substituting the values into the formula:

A = 1000 ( 1 + 0.09/ 12 ) ^[12 ( 1.5 )]          

  ≈ 1000 ( 1.143960 )          

  = 1143.960

Rounding to the nearest cent, we get $ 1143.96 .

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What percent larger is 20.49 trillion to 13.4 trillion

Answers

The answer of the given question based on the percent is , 20.49 trillion is about 52.84% larger than 13.4 trillion.

What is Percentage?

Percentage is a way of expressing a quantity or value as a fraction of 100. It is a widely used method for describing proportions, rates, changes, and comparisons in various fields such as mathematics, economics, statistics, science, and everyday life. The term "percent" literally means "per hundred", and it is represented by the symbol "%". To convert a number to a percentage, we multiply it by 100 and add the symbol "%".

To find the percent larger that 20.49 trillion is to 13.4 trillion, we can use the following formula:

Percent change = (New value -Old value) /Old value * 100%

Plugging in the values we have:

Percent change = (20.49 trillion - 13.4 trillion) / 13.4 trillion * 100%

= 7.09 trillion / 13.4 trillion * 100%

= 52.84%

Therefore, 20.49 trillion is about 52.84% larger than 13.4 trillion.

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Which figure correctly demonstrates using a straight line to determine that the graphed equation is not a function of x?
Mark this and return
3
2
4
Save and Exit
Next
Submit

Answers

Answer:

2 is really answer it is this question bro than ka for good point

Step-by-step explanation:

hello shreekant thanks 886A bubs 2 is answr

A survey of 100 high school students provided this frequency table on how students get to school. What is the probability that a randomly selected student is a junior who takes the bus?

A survey of 100 high school students provided this frequency table on how students get to school. What

Answers

The probability of selecting a junior who takes the bus is P (Junior who takes the bus) = 12/200 = 0.06Hence, the probability that a randomly selected student is a junior who takes the bus is 0.06 or 6/100.

The given frequency table on how students get to school among the high school students is represented in the below table:Transportation Walk Bike BusDriveTotalGrade 9 11 10 14 15 50Grade 10 10 7 13 20 50Grade 11 8 6 12 24 50Grade 12 5 8 8 29 50 Total 34 31 47 88 200Given data from the above frequency table, we are interested in finding the probability of a randomly selected student being a junior who takes the bus.SolutionWe know that the total number of students is 200, and the total number of junior students is 50. Hence the probability of selecting a junior is P (Junior) = 50/200 = 0.25Similarly, the number of students who take the bus is 47 and the number of junior students who take the bus is 12.

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Which equation represents this situation?

Charlie worked 1.5 hours less than Dirk. Together, they worked a total of 25 hours. Dirk worked h hours.


h+(h+1.5)=25

h−2.5=25

h+(h−1.5)=25

h−1.5=25

Answers

pretty sure it’s A, sorry if im wrong :)
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In the Cournot Model of Oligopoly:____________.a. price is higher than the monopoly price b. price is lower than the monopoly price, but higher than the perfectly competitive price c. price equals the perfectly competitive price d. price is lower than the perfectly competitive price Use the Remainder Theorem to find the remainder. . a (x^5 - 6x^4 +2x^3 + 4x - 5) / (x+5) with f(x) = x^5 - 6x^4 + 2x^3 + 4x 5 Kaylen mixed two liquids for a science experiment. One container held 7/8 cup and the other held 9/10 cup. What is the total amount of the mixture? Which statement best describes Clarence Jones opinion of Dr.Martin Luther King, Jr.s legacy ?A. King's work was noble and impactful, but remains incomplete.B. King's work was inspirational, but his methods were questionable.C. King's work was well-intentioned, but realizing his dream is unrealistic.D. King's work did not result in the progress that he had hoped itwould.Someone please answer Ive been stuck between A and D. Will mark brainilest Find the equation of a line that passes through the points (3,2) and (5,8). Leave your answer in the form y = m x + c. what if? what would be the length (in m) of the spring if it were now attached to the vertical portion of the doorframe and stretched horizontally by a single person exerting a force of 160 n? Identifying competitive advantages can be difficult, which explains why they are typically Multiple Choice transactions. temporary. satisfactory. trials. Kelly has 36 counters how many groups of 6 counters can she make A large school district notices that about 15% of its students drop out of school. A company suggests the district try its new technology software designed to improve student motivation in the high school curriculum and, thus, lower the dropout rate. The new technology software is quite expensive, so the company offers a free, one-year trial period to determine whether the dropout rate decreases. If it works, the school district will pay for continued use of the software. What would happen if the school district makes a Type II error chest slapping by gorillas and arm waving by chimpanzees are examples of group of answer choices affiliative behavior submission displays involuntary behavior which of the following is the best strategy to make sure people who are participating remotely in a video call are included in the meeting?responsesturn the speaker volume up high so that participants can hear the meeting betterturn the speaker volume up high so that participants can hear the meeting betterturn off the phone microphone to avoid feedbackturn off the phone microphone to avoid feedbackaim the camera at an angle that has a view of everyone present in the room Answer this please! Thanks True/False : When a firm establishes a single and promotional strategy that it can implement worldwide, it is creating a global advertising campaign. Find the product of 2v3 3 V6Write your answer in simplest radical form. a monopolistically competitive firm will produce output as long as the marginal revenue is group of answer choices less than price. less than marginal costs. above price. above marginal costs. HURRY ITS TIMED!Which statement best describes the pharaohs power?The pharaoh shared control with elected officials.The pharaoh had absolute control over all of Egypt.The pharaoh shared control with the ruling dynasty.The pharaoh had control over nonmilitary matters only. Use the equation below to find T, if w=85, m= 12, and a=3.T=w-maT = 3,060X? Points A, B, and C are collinear. Point B is between A and C. Find the value of x. AC = 19 AB = 4x + 3 BC = 3x + 2 the first phase of the systems development life cycle (sdlc) is bus4 188 1.) If 2/5 of x is 20 what is 3/10 of x?2.) if 2/3 of y is 24 what is 5/6 of y?