Quickly Please!
Which equation has the solutions x = StartFraction 5 plus-or-minus 2 StartRoot 7 EndRoot Over 3 EndFraction?
3x2 – 5x + 7 = 0
3x2 – 5x – 1 = 0
3x2 – 10x + 6 = 0
3x2 – 10x – 1 = 0

Answers

Answer 1

Answer:

3x^2-10x+6=0

Step-by-step explanation:

3x^2-10x+6=0

Δ=10^2-4*3*6=100-72=28

V28=V4*7=2V7

x1=(10+2V7)/6=2(5+V7)/6=(5+V7)/3

x2=(5-V7)/3

Answer 2

Answer:

d

Step-by-step explanation:

edge


Related Questions

Let f(x)= sqrt x. Find (g)x, the function that is f(x) shifted up 2 units and left 5 units

Let f(x)= sqrt x. Find (g)x, the function that is f(x) shifted up 2 units and left 5 units

Answers

The function f(x) becomes  \(g(x)=\sqrt{x+5} +2\) after shifting up 2 units and left 5 units.

How is a function vertically and horizontally shifted?

Vertical shift: A new function g(x)=f(x)+k, where k is a constant, is a vertical shift of the function f(x), given a function f(x). The output values are all altered by k units. The graph will shift to the right if k is positive. If k is negative, the graph will shift downward.

Horizontal shift: A new function g(x)=f(x-h), where h is a constant, is a horizontal shift of the original function f, where f is a function. Graph shifts to the right if h is positive. If h is negative, the graph will shift to the left.

It is given that \(f(x)=\sqrt{x}\).

The graph is shifted up 2 units first.

So, the function becomes \(\sqrt{x} +2\)

Now the function is shifted 5 units to the left.

So, the new function. \(g(x)=\sqrt{x+5} +2\)

So, the function f(x) becomes  \(g(x)=\sqrt{x+5} +2\) after shifting up 2 units and left 5 units.

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which one it it
a
b
c
d

which one it itabcd

Answers

H, (7, 27)

Take a pair and plug in the x and y, so instead of y=4x-1 you would plug 27 and 7 in for x and y, giving you, 27=4(7)-1. Then you solve and see if it's true. 7 x 4 =28, 28-1 = 27, and 27=27 so that's true.

Then you plug those same numbers in for y=3x+6, so 27=3(7)+6. 7 x 3 = 21, 21 + 6 = 27, so that is also true.

I don't know if this is the way your teacher wants you to do it, but this is how I did it.

12 / 3 + 6 x 2? can anyone help?

Answers

Answer:

16

Step-by-step explanation:

12 divided by 3 = 4 and 6*2 = 12

12+4=16

The value of this answer is 16

To solve this expression, we will apply the properties of mathematical operations.

- First, we multiply or divide

- Second, we subtract or add

Resolution

12/3 + 6 x 2

4 + 6 x 2

4 + 12

16

So, the correct value is 16

you are paid $60 per week plus $5 per sale. At least how many sales do you need to make in order to have over $350? which inquelity best represent this

Answers

60+5x>350
Hope that helps

A woman earns $3000 per month and budgets $540 per month for food. What percent of her monthly income is spent on food?
.
% of her monthly income is spent on food.

Answer quickly

A woman earns $3000 per month and budgets $540 per month for food. What percent of her monthly income

Answers

Answer:

17%

Step-by-step explanation:

The budgets on food divides by the total income.

Use what you know about intersecting lines to label the missing and
picture below.
35°
X
type of angle pair:
zoom in
X =
OManeuvering the Middle LLC, 2016, 2022

Use what you know about intersecting lines to label the missing andpicture below.35Xtype of angle pair:zoom

Answers

Answer:

x = 145

Step-by-step explanation:

x and 35° lie on a straight line and are supplementary angles , sum to 180°

x + 35 = 180 ( subtract 35 from both sides )

x = 145

PLEASE HELP MEEEEEEEEEEEEEEEE

PLEASE HELP MEEEEEEEEEEEEEEEE

Answers

Answer:

89

Step-by-step explanation:

Answer: 89 metres squared

Step-by-step explanation:

large area = 13 x 8 = 104

small area = 5 x 3 = 15

104 - 15 = 89

Thomas obtained a bank loan of k10 000 from BSP bank.He repays the money with 36% interest in one year.Calculate his installment payment he pays in one fortnight?​

Answers

Thomas' installment payment that he pays in one fortnight is approximately k523.08.

To calculate Thomas' installment payment, we need to consider the principal amount (k10,000) and the interest rate (36%).

First, let's calculate the total amount to be repaid at the end of the year, including the interest. The interest is calculated as a percentage of the principal amount:

Interest = Principal × Interest Rate

= k10,000 × 0.36

= k3,600

The total amount to be repaid is the sum of the principal and the interest:

Total Amount = Principal + Interest

= k10,000 + k3,600

= k13,600

Now, we need to calculate the number of fortnights in a year. There are 52 weeks in a year, and since each fortnight consists of two weeks, we have:

Number of Fortnights = 52 weeks / 2

= 26 fortnights

To find the installment payment for each fortnight, we divide the total amount by the number of fortnights:

Installment Payment = Total Amount / Number of Fortnights

= k13,600 / 26

≈ k523.08

Therefore, Thomas' installment payment that he pays in one fortnight is approximately k523.08.

It's important to note that this calculation assumes equal installment payments over the course of the year. Different repayment terms or additional fees may affect the actual installment amount. It's always advisable to consult with the bank or financial institution for accurate information regarding loan repayment.

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help please (: picture is included

help please (: picture is included

Answers

It’s b. 3 because you can look at the graph and look at where the point is when x=2

(q1) Find the length of the curve described by the function

(q1) Find the length of the curve described by the function

Answers

The value of the Integral at the lower limit from the value of the integral at the upper limit to get the length of the curve.

The length of the curve described by the function f(x) = 1 + 3x^2 + 2x^3 is to be found. The formula used to find the length of a curve is:

L = ∫(sqrt(1 + [f'(x)]^2))dx where f'(x) is the derivative of f(x)We have to first find f'(x):f(x) = 1 + 3x^2 + 2x^3f'(x) = 6x + 6x^2

The integral becomes:L = ∫(sqrt(1 + [6x + 6x^2]^2))dx = ∫(sqrt(1 + 36x^2 + 72x^3 + 36x^4))dx The integral appears to be difficult to evaluate by hand.

Therefore, we use software like Mathematica or Wolfram Alpha to solve the problem. Integrating the expression using Wolfram Alpha gives:

L = 1/54(9sqrt(10)arcsinh(3xsqrt(2/5)) + 2sqrt(5)(2x^2 + 3x)sqrt(9x^2 + 4))The limits of integration are not given. Therefore, the definite integral  be solved.

We can, however, find a general solution. We use the above formula and substitute the limits of integration.

Then, we subtract the value of the integral at the lower limit from the value of the integral at the upper limit to get the length of the curve.

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A bicycle wheel makes five rotations. The bicycle travels 32.71 ft. Find the diameter of the wheel in inches. Use 3.14 for pie

Answers

The diameter of the bicycle wheel will be 2.82 inches.

What is a circle?

The circle is defined as a two-dimensional figure having a fixed point and the number of the points is traced around the curved path at an equal distance from the fixed point. The overall figure is called a circle.

Given that a bicycle wheel makes five rotations. The bicycle travels 32.71 ft.

First, calculate the circumference of the circle,

C = 32.71 / 5

C = 6.542 Inches

The diameter of the circle will be calculated as:-

π x d = 6.542 Inches

d = 6.542 / π

d = 2.82 Inches

Hence, the diameter will be 2.82 inches.

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The two angles of a triangle are 32 degree and 84 degree. Find the third angle.​

Answers

Answer:

x =64

Step-by-step explanation:

The sum of the angles of a triangle is 180

32+84+x = 180

116 +x =180

116+x-116= 180-116

x =64

Answer:

64

Step-by-step explanation:

a triangle is equal to 180°

we have the 2 degrees that makes up a triangle

32+84= 116

we add the two degrees together

subtract 180 by the number you get from add the degrees together and you will find the degree of the third triangle

16. During the initial week that a movie was in theaters, 1 million people saw the movie. Each week going forward, half the number of people saw the movie as did the previous week (it must not have been very good). How many people saw the movie in the fifth week? a. 500,000 b. 250,000 C. 62,500 d. 31,250

Answers

Answer:

C. 62,500

Explanation:

Week 1: 1 million

For each week going forward, half the number of people saw the movie as did the previous week.

Therefore:

\(\text{Week 2=}\frac{1}{2}\times1,000,000=500,000\)\(\begin{gathered} \text{Week 3=}\frac{1}{2}\times500,000=250,000 \\ \text{Week 4=}\frac{1}{2}\times250,000=125,000 \\ \text{Week 5=}\frac{1}{2}\times125,0000=62,500 \end{gathered}\)

Therefore, the number of people who saw the movie in the fifth week was 62,500.

Let i be the imaginary number √-1. Determine whether the expression a+bi, where a and b are real numbers, represents a real number or a non-real complex number for each case below. Select Real Number or Non-Real Complex number for each case.

Let i be the imaginary number -1. Determine whether the expression a+bi, where a and b are real numbers,

Answers

Case 1: a = 0; b = 0 --> Real Number

Case 2: a = 0; b ≠ 0 --> Non-Real Complex Number

Case 3: a ≠ 0; b = 0 --> Real Number

Case 4: a ≠ 0; b ≠ 0 --> Non-Real Complex Number

Understanding Complex Number

For each case, we can determine whether the expression a + bi represents a real number or a non-real complex number based on the values of a and b.

Case 1: a = 0; b = 0

In this case, both a and b are zero. The expression a + bi simplifies to 0 + 0i, which is equal to 0. Therefore, the expression represents a real number.

Case 2: a = 0; b ≠ 0

Here, a is zero, but b is nonzero. The expression a + bi becomes 0 + bi, where b is a nonzero real number multiplied by the imaginary unit i. Since the expression contains a nonzero imaginary part, it represents a non-real complex number.

Case 3: a ≠ 0; b = 0

In this case, a is nonzero, but b is zero. The expression a + bi simplifies to a + 0i, which is equal to a. As there is no imaginary part in the expression, it represents a real number.

Case 4: a ≠ 0; b ≠ 0

Here, both a and b are nonzero. The expression a + bi contains both a real part (a) and an imaginary part (bi). Thus, it represents a non-real complex number.

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Let i be the imaginary number -1. Determine whether the expression a+bi, where a and b are real numbers,

Ms. Lok is hiking the Grand Canyon. She begins her hike at 12 feet below sea level. Ms. Lok then hikes up 20 feet. a) What is her final position?


b) What if she hiked down 20 feet instead of up? Explain why your answer would be different. plss help ​

Answers

Answer:

8 ft up or 32 ft down depends if she goes above sea level or down sea level

Step-by-step explanation:

if you take the 2 away and subtract 10 from 20 you get 10 then subtract the remaining two

If she whent down you would add 12 + 20  

 

Will give you brainly! :) Thank you for taking time out of your day to answer this!​

Will give you brainly! :) Thank you for taking time out of your day to answer this!

Answers

The probability values are P(30 ≤ Amount ≤ 59) = 0.43, P(Amount ≥ 60 or Amount < 30) = 0.57 and P(Amount ≥ 40) = 0.45

Calculating the probability values

At least $30 but not more than $59

This means that we use the money spent from 30 to 59

So, we have

30 to 59 = 76 + 58 + 67

30 to 59 = 201

Total = 85 + 98 + 201 + 84

Total = 468

Next, we have

P(30 ≤ Amount ≤ 59) = 201/468

P(30 ≤ Amount ≤ 59) = 0.43

At least $60 or less than $30

This means that we use the money spent less than 30 and greater than or equal to 60

So, we have

At least $60 or less than $30 = 84 + 85 + 98

At least $60 or less than $30 = 267

Next, we have

P(Amount ≥ 60 or Amount < 30) = 267/468

P(Amount ≥ 60 or Amount < 30) = 0.57

At least $40

This means that we use the money spent greater than or equal to 40

So, we have

At least $40 = 58 + 67 + 84

At least $40 = 209

Next, we have

P(Amount ≥ 40) = 209/468

P(Amount ≥ 40) = 0.45

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HELP ME PLEASE PLEASE PLEASE

HELP ME PLEASE PLEASE PLEASE

Answers

Answer:

( 4 x 10 y )

Step-by-step explanation:

exercise 28 a sample of 20 joint specimens of a particular type gave a sample mean proportional limit stress of 8.52 mpa and a sample standard deviation of 0.78 mpa.

Answers

A 95% % lower confidence bound for the true average proportional limit stress of all such joints is 8.01.

In the given question, a sample of 20 joint specimens of a particular type gave a sample mean proportional limit stress of 8.52 mpa and a sample standard deviation of 0.78 mpa.

We have to calculate and interpret a 95% lower confidence bound for the true average proportional limit stress of all such joints.

Sample size: n = 13

Sample mean: x’ = 8.52 mps

Sample standard deviation: s = 0.78 mps

95% lower confidence bound for the true average proportional limit stress of all such joints

Level of Significance (α) = 1-95% = 5% = 0.05

α/2 = 0.025

So the value of t(α/2) = 1.8

The confidence interval = x’± t(α/2)*s/√n

Now putting the value:

The confidence interval = 8.41± (1.8)*(0.78)/√12

The confidence interval = 8.41± (1.8)*(0.226)

The confidence interval = 8.41± 0.4068

The confidence interval = (8.41- 0.4068, 8.41+ 0.4068)

The confidence interval = (8.01, 8.82)

A 95% % lower confidence bound for the true average proportional limit stress of all such joints is 8.01.

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The right question is:

A sample of 12 joint specimens of a particular type gave a sample mean proportional limit stress of 8.41 mpa and a sample standard deviation of 0.78 mpa.

Calculate and interpret a 95% lower confidence bound for the true average proportional limit stress of all such joints. (Round your answer to two decimal places.)

Brody runs a farm stand that sells strawberries and grapes. Each pound of strawberries sells for $2.50 and each pound of grapes sells for $2. Brody made $160 from selling a total of 72 pounds of strawberries and grapes. Graphically solve a system of equations in order to determine the number of pounds of strawberries sold, x,x, and the number of pounds of grapes sold, yy.

Answers

The number of pounds of strawberries sold and the number of pounds of grapes sold is 32 and 20 respectively.

What is equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side. It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Given that the selling price of strawberries each pound = $2.50,

The selling price of grapes each pound = $2

The total earning = $160

Let x is the no of a pound of strawberries and y is the no of a pound of grapes sold, then equation will be,

x = y + 12 and 2.50x + 2y= 160

Solve the equation by substitution method;

x = 32 and  y = 20

Therefore, the number of pounds of strawberries sold is 32

the number of pounds of grapes sold is 20.

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Consider the expression 5x-20. Write an expression that if set equal to 5x-20 would result in the equation having no solution.

Answers

Answer:

5x=5x-20 or -20=5x-20

Step-by-step explanation:

Given f(x) = x³ - 6x + k, and the remainder when f(x) is divided by x - 1 is 14, then what is the value of k?

Answers

Answer: 19

Step-by-step explanation: The best way is to set this up with synthetic division (as the attached image).

Hope this helps!

Given f(x) = x - 6x + k, and the remainder when f(x) is divided by x - 1 is 14, then what is the value

A researcher calculated sample proportions from two independent random samples. Assuming all conditions for inference are met, which of the following is the best method for the researcher to use to estimate the true difference between the population proportions?

Answers

Answer:

A) Construct a two-sample  z -interval for the difference between population proportions.

For the function f(x)=x^2−12x+32, find x when f(x)=−4.

Answers

Answer:

X=6

Step-by-step explanation:

Explanation in the picture

1. Substitute f(x) = -4 into f(x)= x^2 - 12x + 32

For the function f(x)=x^212x+32, find x when f(x)=4.

Step-by-step explanation:

f(x)=x^2-12x+32

divide both sides by 4

answer -1/4x^2+3x-8

sorry if im wrong lol

PLEASE HELP IMAGE ATTACHED!

PLEASE HELP IMAGE ATTACHED!

Answers

The value of the determinants are

D=13

Dx =26

Dy =52

Dz =26

What is determinant?

The determinant of a matrix is ​​a scalar value calculated for a given square matrix. Linear algebra deals with the determinant, it is calculated using the elements of a square matrix. It can be thought of as a scaling factor for the matrix transformation. Useful for solving a system of linear equations, calculating the inverse of a matrix, and numerical operations.

Given system is

x+ y-z= 4

3x+4y-3z=16

9x- 3y+4z=14

from the system the determinants become,

D=  1   1  -1

      3  4  -3

      9   -3  4

D= 1(16-9)-1(12+27)-1(-9-36)

   =7-39+45

   13

Dx=4   1  -1

      16  4  -3

      14   -3  4

   =26

Dy=1  4  -1

      3  16  -3

      9   14  4

   =52

Dz=1  1  4

      3  4  16

      9   -3  14

 =26

Hence, D=13, Dx=26, Dy=52, Dz=26

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Select the correct answer.

A figure shows the inscribed triangle ABC with center point O which bisects BO. An angle of C is 50 degrees.

In the diagram,
is a diameter of the circle with center O. If m∠
= 50°, what is m∠
?

A.
50°
B.
40°
C.
80°
D.
100°
Reset Next

Answers

Answer: C

Step-by-step explanation:

a contracter purchases 7 dozen pair of padded work glovs for $103.32. he incorrectly calculates the unit price at $14.76 what error did th contractor make

Answers

Answer:

The contractor made an error in calculating the unit price of the padded work gloves.

Step-by-step explanation:

To find the unit price of an item, we need to divide the total cost of the item by the number of units purchased. In this case, the contractor purchased 7 dozen pair of padded work gloves, which is equal to 7 x 12 = 84 pair of gloves. Therefore, the unit price of the padded work gloves is $103.32 / 84 pair = $1.23 per pair.

The contractor incorrectly calculated the unit price as $14.76, which is an error of $14.76 - $1.23 = $13.53. This error occurred because the contractor did not correctly take into account the number of units purchased when calculating the unit price.

Hope this helps:)

Look at photo asap please






Look at photo asap please

Answers

Answer:

option D is correct.

hope it helps

Find RS. Explain your reasoning.
6x + 5 9x - 4
RS=

Find RS. Explain your reasoning.6x + 5 9x - 4RS=

Answers

The value of line RS is 23

How to determine the value

From the diagram shown, we have that line PS, line PQ, line QR and line RS form a square.

Note that the sides of a square are equal to each other.

The relationship is represented as;

Line PS = Line PQ = Line QR = Line RS

We have that;

Line PS = 6x - 5Line RS = 9x - 4

Substitute the expressions

6x - 5 = 9x - 4

Now, collect like terms

6x - 9x = - 4 - 5

Subtract the like terms

-3x = -9

Make 'x' the subject of formula

-3x/-3 = -9/-3

x = 3

Then, RS = 9x - 4 = 9(3) - 4 = 27 - 2 = 23

Hence, the value is 23

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read the instructions and then answer the questions​

read the instructions and then answer the questions

Answers

Answer:

2) \(x - y = \frac{2}{3} \)

\( = > x = \frac{2}{3} + y = \frac{2 + 3y}{3} \)

3) \(3x + 2y = 6\)

\( = > 3x = 6 - 2y \)

\( = > x = \frac{6 - 2y}{3} \)

4) \( \frac{1}{4} x + y = 2\)

\( = > y = 2 - \frac{x}{4} = \frac{8 - x}{4} \)

5) \(4x - 3y = - 33\)

\( = > 3y = 4x + 33\)

\( = > y = \frac{4x + 33}{3} \)

3) What measurement is
closest to the volume of
the cone in cubic
kilometers?
7 km
14 km
781.3 km
O 435.1 km
O 562.4 km
718.4 km

3) What measurement isclosest to the volume ofthe cone in cubickilometers?7 km14 km781.3 kmO 435.1 kmO

Answers

Answer:

A) 781.3

Step-by-step explanation:

To find the volume of the cone, you must first find the radius and height of the cone. Which is 7km (radius) and 14km(height).

Next use the formula (Which is in the picture since it's too hard to type out on here)

I also would of explained it but I found it easier just to type it out (In the file attached below)

Finally the answer is 781.3 km

Hope this helps

3) What measurement isclosest to the volume ofthe cone in cubickilometers?7 km14 km781.3 kmO 435.1 kmO
3) What measurement isclosest to the volume ofthe cone in cubickilometers?7 km14 km781.3 kmO 435.1 kmO
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