Ask question

Ask question

All categories

BlackZzzverrR [31]

2 years ago

11

One way to test for one to one functions is to...

1 answer:

Mumz [18]2 years ago

6 0

Answer:

Perform a horizontal line test

You might be interested in

Pls provide the steps , brainliest to whoever gets it right .

Salsk061 [2.6K]

Times the two radicals together

So it's:

8*sqrt 15*5 (find common numbers between 5 and 15 which is 5)

8*sqrt(5^2*3)

8*5 sqrt3

40 sqrt 3

Hope this helped :)

4 0

2 years ago

Factor the expression.

grigory [225]

Hey!

First, let's write the problem,
$4r^2-64$
Factor out the common term, which is 4,
$=4\left(r^2-16\right)$
Then, let's factor this part: $r^2-16$
We are going to factor it using the difference of squares rule.
$=\left(r+4\right)\left(r-4\right)$
Our final factored answer would be,
$=4\left(r+4\right)\left(r-4\right)$

Thanks!
-TetraFish

8 0

3 years ago

Read 2 more answers

Y is inversely proportional to x.

Inessa [10]

Answer:

1. $xy = 63$

2. $y = 3$

Step-by-step explanation:

Given

Variation: inverse Proportion

y = 7, x = 9

Required

- Write an equation connecting y and x

- Find y when x = 21

Given that thee variation is inversely proportional;

This implies that

$y\ \alpha\ \frac{1}{x}$

Convert variation to equation

$y\ = \frac{k}{x}$ ----------- Equation 1

Where k is the constant of variation

Substitute 7 for y and 9 for x in equation 1

$7 = \frac{k}{9}$

Multiply both sides by 9

$9 * 7 = 9 * \frac{k}{9}$

$63 = k$

Substitute 63 for k in equation 1

$y = \frac{63}{x}$

Multiply both sides by x

$x * y = \frac{63}{x} * x$

$xy = 63$

Hence, the equation connecting x and y is $xy = 63$

Solving for when x = 21

Substitute 21 for x in the above equation

$21 * y = 63$

Divide both sides by 21

$\frac{21 * y}{21} = \frac{63}{21}$

$y = 3$

4 0

3 years ago

Sam buys 4 tropical fish. Each fish is 5/8 of an inch long. Write an equation that represents 4 x 5/8 as a multiple of a unit fr

UkoKoshka [18]

4 x 5/8= 20/8= 10/4=5/2 inches lng

3 0

3 years ago

How to find the volume of L blocks?

choli [55]

<span>Volume = L * W * H cubic units

Surface Area = 2 * (LW + LH + WH) square units</span>

5 0

3 years ago