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3 years ago

Help pleaseeeeeee! I need the correct answer soon

Mathematics

1 answer:

dexar [7]3 years ago

4 0

Answer:

J - all three

Step-by-step explanation:

an inverse function is simply the same function but now solved by x (and then we switch names of the variables x and y to still have a regular function definition).

let's use I as example

y = 3x - 6

for the inverse function we now solve for x.

y + 6 = 3x

x = y/3 + 2

and to switch names for a regular function definition

y = x/3 + 2

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Determine whether quantities vary directly or inversely and find the constant of variation. 16 factory workers made 40 pieces in

Andrei [34K]

Answer:

Part A) $8\ workers$

Part B) $10\ workers$

Part C) $40\ workers$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

Let

x -----> the number of workers

y ----> the number of pieces made

In this problem

The relation between the variables x and y represent a direct variation (proportional variation)

For x=16, y=40

Find the value of the constant of proportionality k

$k=\frac{y}{x}$

substitute the values

$k=\frac{y}{x}$

$k=\frac{40}{16}\\k=2.5\ \frac{pieces}{worker}$

The linear equation is equal to

$y=2.5x$

Part A) How many workers are needed to make 20 pieces

For y=20 pieces

substitute in the linear equation

$20=2.5x$

$x=8\ workers$

Part B) How many workers are needed to make 25 pieces

For y=25 pieces

substitute in the linear equation

$25=2.5x$

$x=10\ workers$

Part C) How many workers are needed to make 100 pieces

For y=100 pieces

substitute in the linear equation

$100=2.5x$

$x=40\ workers$

3 0

3 years ago

The interest rate on a car loan has decreased 29.3% over the last 10 years and is now 7.7%. What was the rate 10 years ago?

Ludmilka [50]

We know that the interest decreased by 29.3%, therefore what was left now is simply just 70.7% of the original, therefore we divide this by 0.707

rate = 7.7% / 0.707

rate = 10.89%

<span>So the rate was 10.89% 10 years ago</span>

4 0

3 years ago

A rectangular Persian carpet has a perimeter of 220 inches the length of the carpet is 22 inches more than the width what are th

Sedaia [141]

Answer:

length= 65 inches

width= 45 inches

Step-by-step explanation:

65 plus 65= 130

45 plus 45= 90

130 plus 90= 220 in.

5 0

4 years ago

2) (-8, -9). (4.-10)

const2013 [10]

Answer: √

145 or 12.04159457 for the decimal ways try 12

Step-by-step explanation: 12.0415945787923

Midpoint (−2,−9.5)

Slope −0.0833333333333333

x intercept −116.00

y intercept −9.67

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3 years ago

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Sal records the arrival time for his bus every day of the week for two months. He observed that on Thursdays the bus is at least

kvv77 [185]

Answer:

The answers are:

Inductive reasoning

and

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4 years ago

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