help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

The equation that shows how the total number of science quizzes, y, depends on the number of months that have passed, x is y = 4x.

An equation is a mathematical statement that shows the relationship between two or more values.

In this case, Leon has already had 4 science quizzes this semester and expects to have 4 quizzes per month going forward.

We can use an equation to show how the total number of science quizzes, y, depends on the number of months that have passed, x.

The equation for this would be y = 4x, where x is the number of months that have passed and y is the total number of science quizzes.

This equation shows that for each month that passes, the total number of science quizzes increases by 4

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The required Z-score value of 28 is -1.75.

The relationship between a value and a set of values' mean is described by the statistical measurement known as the Z-score.

Standard deviations from the mean are used to measure Z-score.

A Z-score of zero means the data point's score is the same as the mean.

The 90th percentile's z-score is 1.2816, as calculated by the Percentile to Z-Score Calculator.

Therefore, a student's z-score would be deemed "excellent" if it was greater than or equal to 1.2816.

So, it is mentioned in the inquiry.

The mean and standard deviation of a normal distribution are each equal to 20.

13 as z-score = =?

The z-score is equal to (n-m)/d.

Where the value of n is (13)

m = average, and

standard deviation, or d.

Now, calculate as follows:

= (13 - 20) / 4

= -1.75

Therefore, the required Z-score value of 28 is -1.75.

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The area under the standard normal curve to the right of z = -2.3 can be found using a table or a calculator. We need to find the probability that a standard normal random variable Z is greater than -2.3. This is equivalent to finding the area under the curve to the right of -2.3.

To calculate the area under the standard normal curve to the right of z = -2.3, we need to find the probability that a standard normal random variable Z is greater than -2.3. This can be done by converting -2.3 to a z-score and finding the area under the standard normal curve to the right of this z-score.We can use a standard normal distribution table to find the area to the left of z = -2.3, which is 0.0107. To find the area to the right of z = -2.3, we subtract this value from 1.P(Z > -2.3) = 1 - P(Z < -2.3) = 1 - 0.0107 = 0.9893

Therefore, the area under the standard normal curve to the right of z = -2.3 is 0.9893. This means that the probability of getting a z-score greater than -2.3 is 0.9893 or 98.93%. This can be interpreted as the percentage of values that lie to the right of -2.3 on a standard normal distribution curve.This result can be useful in many statistical applications. For example, it can be used to calculate confidence intervals or to test hypotheses. It can also be used to estimate probabilities for other normal distributions, by using the standard normal distribution as a reference.

In conclusion, the area under the standard normal curve to the right of z = -2.3 is 0.9893. This means that the probability of getting a z-score greater than -2.3 is 0.9893 or 98.93%. This can be interpreted as the percentage of values that lie to the right of -2.3 on a standard normal distribution curve. This result can be useful in many statistical applications and can be used to estimate probabilities for other normal distributions.

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Hence, in response to the provided question, we can say that As a result,  equation the item's selling price after both markdowns is 166.40$.

An algebraic equation is a method of connecting two quotes by using the equals symbol (=) to express equality. In algebra, an explanation is a definitive expression that verifies the equivalency of two formula. For example, the identical character divides the numbers 3x + 5 and 14. A linear equation might be used to recognize the connection that existing between the texts written on separate sides of a letter. The product and application both frequently the same. 2x - 4 equals 2, for example.

Then, we may determine the item's price after the initial 20% discount.

20% of 520$ equals (20/100) * 520$ = 104$, hence the item's new price is 520$ - 104$ = 416$.

After another six months of not selling, the item gets reduced by 60%.

60% of 416$ equals (60/100) * 416$ = 249.60$, therefore the item's ultimate sale price after both markdowns is 416$ - 249.60$ = 166.40$.

As a result, the item's selling price after both markdowns is 166.40$.

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Using equations, we can find that the item's selling price after both markdowns is 166.40$.

In an algebraic equation, the equals symbol (=), which represents equality, can be used to connect two quotes. In algebra, an explanation is a declarative statement that establishes the similarity of two formulas. For example, the integers 3x + 5 and 14 are divided by the same letter.

A linear equation can be used to identify the relationship between the texts written on the various sides of a letter. Applications and products can typically be used interchangeably. In this instance, 2x – 4 = 2.

After applying the initial 20% discount, we may determine the item's price as:

20% of 520$ equals (20/100) × 520$ = 104$

Hence the item's new price is 520$ - 104$ = 416$.

After another six months of not selling, the item gets reduced by 60%.

60% of 416$ equals (60/100) × 416$ = 249.60$

Therefore, the item's ultimate sale price after both markdowns is

416$ - 249.60$ = 166.40$.

As a result, the item's selling price after both markdowns is 166.40$.

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Answer:

abc- 130

ebd-130

abe-50

Step-by-step explanation:

Answer:

xy(5-6xy)/4

Step-by-step explanation:

Here, we want to evaluate the expression given

We have this as ;

(5xy - 6x^2y^2)/4

= xy(5-6xy)/4

the answer to the question is 5.20XY cubed.

How to solve the problem?

The square root of 18 X to the seventh power Y to the sixth power can be simplified using the laws of exponents and radicals. First, we can express 18 as a product of its prime factors: 18 = 2 x 3 x 3. Then, we can write X to the seventh power as X to the sixth power times X, and Y to the sixth power as Y to the third power squared.

So, we have:

Square root of 18 X to the seventh power Y to the sixth power

= Square root of (2 x 3 x 3) X to the sixth power X Y to the third power squared

= Square root of 2 X to the sixth power Y to the third power squared times 3

= Square root of 2 X to the sixth power Y to the third power squared times square root of 3

Using the laws of exponents and radicals, we can simplify the square root of 2 X to the sixth power Y to the third power squared as X cubed Y cubed, and we can approximate the square root of 3 as 1.73. Therefore:

Square root of 18 X to the seventh power Y to the sixth power

= X cubed Y cubed times square root of 3

= 3XY cubed times 1.73

= 5.20XY cubed (rounded to two decimal places)

So, the answer to the question is 5.20XY cubed.

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The middle 50% of the distribution for X, the bounds of which form the distance represented by the IQR, lies between the first and third quartiles of the data set.

Specifically, the first quartile (Q1) marks the 25th percentile of the data set, while the third quartile (Q3) marks the 75th percentile.

The difference between Q3 and Q1 is known as the interquartile range (IQR).The IQR is a helpful measure of spread in a data set since it excludes outliers from the calculation. Outliers are any data points that fall outside of 1.5 times the IQR above the third quartile or below the first quartile of the data set. Therefore, the middle 50% of the distribution for X lies between Q1 and Q3, with the IQR representing the range of values between these two quartiles.

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Answer:

Step-by-step explanation:

The angle we are given is 2° and we are given the opposite leg, 135 ft. We are trying to find the hypotenuse length- the diagonal distance from the ship to the lighthouse.

So, we use SOHCAHTOA with sine:

\(sin(2)=\frac{opp}{hyp}= \frac{135}{x}\)

\(x = \frac{135}{sin(2)} = 3868.251 ft\)

Keep in mind that the angle is in degrees. Also, the number is large because of the extremely short angle.

The ship is  3857.1 feet away from the lighthouse.

Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.

We can use the tangent function to solve this problem.

Let x be the distance between the ship and the lighthouse, then we have:

tan(2º) = opposite / adjacent

tan(2º) = 135 / x

To solve for x, we can multiply both sides by x and then divide both sides by tan(2º):

x = 135 / tan(2º)

x = 3857.1

Therefore, the ship is  3857.1 feet away from the lighthouse.

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Answer:

y = x - 5

Point Slope form: y + 8 = 1 (x + 3)

Step-by-step explanation:

(-3,-8) and (-7,-12)

(x₁, y₁)         (x₂, y₂)

        y₂ - y₁        -12 - (-8)         -12 + 8         -4

m = ------------ = --------------- = -------------- = -------- = 1

        x₂ - x₁          -7 - (-3)          -7 + 3          -4

y - y₁ = m(x - x₁)

y - (-8) = 1(x - (-3))

y + 8 = x + 3

   -8         -8

---------------------

y = x - 5

I hope this helps!

Answer:

-1 will be the answer.

hope this is helpful. ^_^

Answer:

so pascal is 13 and serge is 10

Step-by-step explanation:

i really hope this helps!

Answer:

Step-by-step explanation:

Let Pascal's age be x

Then Serge is x - 3

Sum of their ages is 23

Pascal is 13 and Serge is 10

By standard deviation,

H​​​​​​0:μ=2.5

H​​​​​​a:μ<2.5 is the appropriate test to perform.

How to interpret a standard deviation?

The term "standard deviation" (or "") refers to the degree of dispersion of the data from the mean.

                     Data are grouped around the mean when the standard deviation is low, and are more dispersed when the standard deviation is high.

From the given information,

t-test about mean,

Null and Alternative hypothesis is,

H​​​​​​0:μ=2.5

H​​​​​​a:μ<2.5

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Answer:

C. 2/3

Step-by-step explanation:

4/6 is equivalent to 2/3 (divide by 2)

The amount to be paid is more on credit card 2 is more, it must be paid first.

Card 1:

Current balance = $8,312.69

Annual percentage rate APR = 24.16%

Credit limit = $10,000.

Used amount = $10,000 - $8,312.69

Used amount = 1687.31

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

P = $1687.31

r = 24.16% = 0.2416

Take n = 1 and time = 1 year.

A =  1687.31*\((1 + 0.2416/n)^{1*1}\)

A = 1687.31 * 1.2416

A = $2094.96

For Card 2:

Current balance = $1,180.34

APR = 21.15%

Credit limit = $75,00

Used amount = $75,00 - $1,180.34

Used amount = $6319.66

A = 6319.66*\((1 + 0.2115/n)^{1*1}\)

A = 6319.66 * 1.2115

A = $7656.26

As the amount to be paid is more on credit card 2 is more, it must be paid first.

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The average rate of change of the population of the city are;

1) The population increases by 250 per year on average between 1930 and 1950

2) The average rate of change of the population is negative from 1970 to 1980

The average rate of change of a function, is the ratio of the difference between the values of the function at two specified input values, and the difference between the input values.

1) The values on the graph, (1930, 40), and (1950, 45), indicates, that the population of the city in 1930 is 40 thousand, and the population of the city in 1950 is 45 thousand, therefore, the average rate of change of the population between 1930 and 1950 is; (45 - 40)/(1950 - 1930) = 0.25

2) The data on the graph, indicates that we get; (1970, 35), and (1980, 30), therefore, the average rate of change from 1970 to 1980 is; (30 - 35)/(1980 - 1970) = -0.5.

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You slept for 9 hours in those three days, calculated by multiplying 12.5% of the total hours (72) by 72, which equals 9.

To calculate the number of hours slept in three days, we first need to determine how many hours there are in three days.

As given, 1 day has 24 hours. So, three days will have 3 x 24 = 72 hours.

Now, we are told that you slept for 12.5% of those 72 hours. To calculate this, we multiply the percentage by the total number of hours:

12.5% x 72 hours = (12.5/100) x 72 = 0.125 x 72 = 9 hours

Therefore, you slept for 9 hours in those three days.

Percentage is a way to express a proportion or ratio as a fraction of 100. The sign "%" is widely used to represent it. For example, if you had 20 apples and you ate 5 of them, you would have consumed 25% of the apples (5 out of 20).

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Answer:

6x + 7y +84

Step-by-step explanation:

The linear equation y = -(6/7) x + 12 in the standard form will be 6x + 7y - 84 = 0.

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation in standard form is given as,

ax + by + c = 0

Where -a/b is the slope of the line and c/b is the y-intercept of the line.

The linear equation in slope-intercept form is given below.

y = -(6/7)x + 12

Convert the equation into a standard form. Then we have

y = -(6/7)x + 12

y = (-6x + 84) / 7

7y = - 6x + 84

6x + 7y - 84 = 0

The linear equation y = -(6/7) x + 12 in the standard form will be 6x + 7y - 84 = 0.

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For solving the inequalities, there are more than four steps.

The step to solve given inequalities, the first step is to add the same number to both sides, the second step is to  Subtract the same number from both sides and the third step is to  Multiply both sides by the same positive number, and the fourth step is to  Divide both sides by the same positive number, and the fifth step is to Multiply both sides by the same negative number and reverse the sign and the last step is to Divide both sides by the same negative number and reverse the sign. Out of which steps 2,3,4 and 5 are the most important steps.

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Answer:

fyhjcfhgfcg

Step-by-step explanation:

The balance after 5 years is equal to $8,136.67.

In Mathematics and Financial accounting, compound interest can be calculated by using the following mathematical equation (formula):

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

Where:

By substituting the given parameters into the formula for compound interest, we have the following;

\(A(5) = 6,500(1 + \frac{0.045}{12})^{12 \times 5}\\\\A(5) = 6,500(1.00375)^{60}\)

Future value, A(5) = $8,136.67

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Answer: CD=7

Step-by-step explanation:

CD+DE=CE

x+7=2x

x=7

CD=x

CD=7

Answer:

\(\huge\boxed{x=2\ and\ y=-3}\)

Step-by-step explanation:

\(22(x+yi)+(28+4i)=72-62i\\\\22x+22yi+28+4i=72-62i\\\\(22x+28)+(22y+4)i=72-62i\Rightarrow22x+28=72\ \wedge\ 22y+4=-62\\\\22x+28=72\qquad|\text{subtract 28 from both sides}\\22x=44\qquad|\text{divide both sides by 22}\\\boxed{x=2}\\\\22y+4=-62\qquad|\text{subtract 4 from both sides}\\22y=-66\qquad|\text{divide both sides by 22}\\\boxed{y=-3}\)

An obtuse triangle and right angle triangle can always be used as counter examples to the given statement.

What is acute angle?

An angle which is measuring less than 90 degrees is called an acute angle. This angle is smaller than the right angle

What is obtuse angle?

An obtuse angle is a type of angle that is always larger than 90° but less than 180°. In other words, it lies between 90° and 180°.

What is right angle?

A right angle is an angle of exactly 90 degrees or \pi /2 radians corresponding to a quarter turn. If a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles..

Hence, an obtuse triangle and right angle triangle can always be used as counterexamples to the given statement " All angles in a triangle are acute".

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Answer:

Margo's model is a better fit because her sum of absolute deviations is lower than Jose's. When comparing regression models using the sum of absolute deviations as the standard, the model with the lower sum of absolute deviations is considered a better fit. In this case, Margo's model has a sum of absolute deviations of 54 which is lower than Jose's model with a sum of absolute deviations of 124. Therefore, Margo's model is a better fit.

Step-by-step explanation:

Answer:

X= 15 or D

Step-by-step explanation:

Tan(45) multiplied by 15 is equal to 15

Answer:

4

Step-by-step explanation:

-3p+6+7p=22

-3p+7p=16

4p=16

p=4

Answer:

p = 4

Step-by-step explanation:

-3p+6+7p = 22

     -6         -6

----------------------

-3p+7p = 16

4p = 16

---     ---

4       4

------------

p = 4

(L2) The Circumcenter Theorem states that the circumcenter of a triangle is equidistant from each vertex of the triangle.

The Circumcenter Theorem is a fundamental concept in geometry that states that the circumcenter of a triangle is equidistant from each of its vertices. In other words, the circumcenter is the point where the perpendicular bisectors of the sides of a triangle intersect.

The circumcenter plays a crucial role in the geometry of triangles, as it is the center of the circumcircle, which is the circle that passes through all three vertices of the triangle.

The circumcircle has several important properties, such as the fact that the length of the circumcircle's circumference is equal to twice the length of the triangle's longest side.

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Answer:

Domain:

\( - \infty < x < \infty \)

Range:

\( - 1 \le \: y < \infty \)

Step-by-step explanation:

The Domain of a function is x values which are included in the graph. Sometimes x values will not be included because they cannot be defined at that point, but in this case the graph indicates that the graph continues to the right and left with no indication that there is an asymptote or it is undefined beyond the graph so we can assume it's defined for all real numbers. We can represent this in interval notation as:

\( - \infty < x < \infty \)

Since if you plug in any real number, this inequality should be true.

The range of a function is defined as y values which are on the graph, this is restricted when certain y values are not on the graph... but we can usually tell because functions will have a minimum/maximum. By looking at the graph it appears to reach a minimum at y = -1 and then on the right and left side is increasing, never going below this value, so the range can be defined as:

\( - 1 \le y < \infty \)

Since the y values vary between -1 (including -1) and infinity... well that really just means there's no upper bound and it just keeps increasing and increasing.