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3 years ago

Identify the type of regression that returns the equation y = x^2 + 7x - 15.

Mathematics

1 answer:

horrorfan [7]3 years ago

4 0

Answer:

B. quadratic

Step-by-step explanation:

The equation y=x^2+7x-15 is a quadratic equation. It might be the result of a quadratic regression.

_____

The descriptors "linear," "quadratic," "exponential," and "power" describe the sort of equation that is used to try to match the data. Quadratic regression returns a quadratic equation.

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59.2g of sugar is needed to make 8 cakes. How much sugar is needed for 11 cakes?

Eva8 [605]

Answer:

81.4

Step-by-step explanation:

59.2g is for 8, so to find the price per, 59.2/8=7.4. 7.4*11=81.4

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3 years ago

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In which year did the population grow the fastest ? Justify your answer using the average rate of change

ch4aika [34]

1957 avg rate of 500,000 per every person

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3 years ago

The midpoint of \overline{\text{AB}}

Schach [20]

Answer:

<em>The coordinates of b are: B=(-7,-8)</em>

Step-by-step explanation:

We are given the coordinates of the midpoint of $\overline{\text{AB}}$ as M=(-5,-2).

We are also given the coordinates of A=(-3,4). The question requires us to calculate the coordinates of the other endpoint B.

Let (xb,yb) the coordinates of B. The coordinates of the midpoint can be calculated as follows:

$\displaystyle x_m=\frac{x_a+x_b}{2}$

$\displaystyle y_m=\frac{y_a+y_b}{2}$

We know xa=-3 and xm=-5. Solve the first equation for xb:

$2x_m=x_a+x_b\Rightarrow x_b=2x_m-x_a$

Substituting:

$x_b=2\cdot (-5)-(-3)=-10+3$

$x_b=-7$

We can solve the second equation for xb and get:

$y_b=2y_m-y_a$

Since ya=4 and ym=-2, then:

$y_b=2\cdot (-2)-(4)=-4-4$

$y_b=-8$

Thus, the coordinates of b are: B=(-7,-8)

4 0

3 years ago

Write the average of y numbers. Is 22 the numbers 20, 17, 24, 18, 29 and x. find x

Elena L [17]

22 is the average of the numbers 20,17,24,18,29, and x is what I guess the qusetion is

count them
6 numbers

(20+17+24+18+29+x)/6=22
(108+x)/6=22
times both sides by6 to clear fraction
108+x=132
minus 108 from both sides
x=24

3 0

3 years ago

Complete the table thanks in advance

inna [77]

Y = 1/2 x

for x = 0 → y = 1/2 · 0 = 0
for x = 2 → y = 1/2 · 2 = 1

x | 0 | 2 |
y=1/2x| 0 | 1 |

y = x + 3

for x = 0 → y = 0 + 3 = 3
for x = -3 → y = -3 + 3 = 0

x | 0 | 3 |
y=x+3|-3 | 0 |

6 0

3 years ago