Ask question

Ask question

All categories

rosijanka [135]

3 years ago

12

If y= -12 when x= 9 find y when x= -4

1 answer:

Andre45 [30]3 years ago

4 0

This is a fraction. So it's y over x. So -12 over 9 equals y over -4. After you put those in fractions, you cross multiply. So -12(-4) is 48, and 9y. Then you set them equal to each other, so 48=9y. You divide 9 on both sides and your answer should be y=5.3

You might be interested in

5 7/5-5 2/5-3 4/5 equal what

Katyanochek1 [597]

Answer:

-78.424

Step-by-step explanation:

8 0

2 years ago

What is the area of a rectangular rug that<br> measures 8 1/4 feet by 10 3/4 feet?<br> Area:

ziro4ka [17]

Answer:

<h2> $354 \frac{3}{4} \: \: feet$ </h2>

Step-by-step explanation:

$= 8 \frac{1}{4} \times 10 \frac{3}{4}$

$= \frac{33}{4} \times \frac{43}{4}$

$= \frac{1419}{4}$

$= 354 \frac{3}{4} \: \: feet$

7 0

2 years ago

I need help with this question please

madam [21]

Answer:go there and it will answer your question

<h2 />

Step-by-step explanation:

6 0

3 years ago

What’s the radius of the circle

topjm [15]

Answer:

radius=2

Step-by-step explanation:

if the circumference=4pi and the formula is 2pir then r must be 2 and would look like this:

C = 2pir

C = 2pi2

C = 2*2pi

C = 4pi

6 0

3 years ago

Find the exact value of tan22.5 using the half angle formula.

mote1985 [20]

Tan(a/2) = sin a / (1 + cos a)
tan(45/2) = sin(45) / (1 + cos(45)) = (1/√2) / (1 + 1/√2) = (1/√2) / (√2 + 1)/√2 = 1/(√2 + 1) = (√2 - 1)

7 0

3 years ago

Read 2 more answers