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3 years ago

5

What is the inverse function of y = (x-4)^2 - 2

1 answer:

salantis [7]3 years ago

4 0

Answer:

Step-by-step explanation:

x = (y-4)^2 - 2

square root of x = y - 4 - 2

square root of x = y - 6

(square root of x) - 6 = y

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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

$y = 20x - 20+100$

$y = 20x +80$

7 0

3 years ago

a rider sits on a motorcycle . the motorcyle has amass of 237 kilograms . the rider has a mass of 89 kilograms. what is the tota

Tanya [424]

THe rider and the motorcycle mass togther will be 326.

237+89=326

4 0

3 years ago

Find the principal (positive) square root of 4. If necessary, round the answer to the nearest hundredth (two decimal places).

Lana71 [14]

The principal square root of 4 is 2

8 0

3 years ago

Can someone help me on this question please

Sergio039 [100]

Answer:

12111

Step-by-step explanation:

Eleven thousand- 11000

Eleven Hundred-1100

Eleven-11

11000+1100+11=12111

Is this what you meant? Figures as in numbers?

6 0

3 years ago

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A coordinate plane with a straight line with a negative slope, with endpoints at, (0, 9) and (9, 0) The slope of the graph is –1

zaharov [31]

Answer:

D .candle burns down 1 cm per hour

Step-by-step explanation:

this is the answer i just got it rigth

7 0

3 years ago

Read 2 more answers