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3 years ago

If h(x) = x-7 and g(x) = x2, which expression is equivalent to (gº h)(5)?

1 answer:

7 0

Answer: $g(5) *h(5) = (5-7)(5^2)= (25)(-2) = -50$ Im assuming that g(x) is x^2, since you were incapable of writing the exponent sign

Step-by-step explanation:

$(g*h)(x)=g(x)*h(x)$

So this means the functions should be multipled and both evaluated at x = 5

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What is the side length? Please help, thanks

azamat

Answer:

if Area = 169/225

then

S = √(169/225)

S = √169/√225

S = 13/15

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3 years ago

3. Sam and Tim each have savings accounts. Every month they each put in some of their

Setler [38]

Answer:

$y = 30x +50$ --- Sam

$y = 20x +80$ --- Tim

Step-by-step explanation:

Given

Sam Tim

х --- f(x) --------------- g(x)

1 --- 80 --------------- 100

2 --- 110 --------------- 120

3 --- 140 --------------- 140

4 --- 170 -------------- 160

Required

Determine the y value

y value implies the equation of the table

Calculating the equation of Sam

First, we need to take any corresponding values of x and y

$(x_1,y_1) = (1,80)$

$(x_2,y_2) = (4,170)$

Next, we calculate the slope (m)

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{170 - 80}{4 - 1}$

$m = \frac{90}{3}$

$m = 30$

Next, we calculate the line equation using:

$y - y_1=m(x-x_1)$

$y - 80 = 30(x - 1)$

$y - 80 = 30x - 30$

Make y the subject

$y = 30x - 30 + 80$

$y = 30x +50$

Calculating the equation of Tim

First, we need to take any corresponding values of x and y

$(x_1,y_1) = (1,100)$

$(x_2,y_2) = (4,160)$

Next, we calculate the slope (m)

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{160 - 100}{4 - 1}$

$m = \frac{60}{3}$

$m = 20$

Next, we calculate the line equation using:

$y - y_1=m(x-x_1)$

$y - 100 = 20(x - 1)$

$y - 100 = 20x - 20$

Make y the subject

$y = 20x - 20+100$

$y = 20x +80$

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3 years ago

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Answer:

Parabola

Step-by-step explanation:

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If y varies directly with X and y =10 and X=4 write the direct linear variation equation .

rosijanka [135]

Y= kx (k being a constant)
10= k × 4 k=5/2

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3 years ago

Rafael writes an expression to represent “a number, n, decreased by thirty-one.” Then he evaluates that expression if n = 29. Wh

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