4 years ago

Use substitution to solve the system. 4x-3y=−32 x=−2y-13

1 answer:

6 0

4x-3y=-32
x=-2y-13

4x-3y=-32
4(-2y-13)-3y=-32
-8y-52-3y=-32
-11y-52=-32
-11y=20
11y=-20
y=-20/11

x=-2y-13
x=-2(20/11)-13
x=-40/11-13
x=-13 and 40/11

You might be interested in

ZX and zy are supplementary angles. zy measures 33°.what is the measure of ZX

Sati [7]

Answer:

147°

Step-by-step explanation:

supplementary angles equal to 180° in total so...

180 - 33 = 147

8 0

3 years ago

2(u-1)-6= -5(-4u+4) -3u

erik [133]

Answer:

u = 4/5

Step-by-step explanation:

Expand

2u - 2 - 6 = 20u - 20 - 3u

Rearrange with like terms on either side

12 = 15u

u = 4/5

7 0

3 years ago

Read 2 more answers

Grace Oatman bought 6 1/3 yd. of material for $4.95 per yard. What was the cost of<br> the material?

DanielleElmas [232]

Answer:

The total cost of the material was $31.35

6 0

4 years ago

Find the exact value of csc 5pi/6

Leona [35]

Answer:

csc 2 (csc $\frac{5\pi}{6}$ = csc 150 = csc 30 = csc 2)

Step-by-step explanation:

csc $\frac{5\pi}{6}$ is in the 2nd Quadrant where only sin, and csc are positive.

csc $(\frac{5\pi}{6})=csc (\pi -(\frac{5\pi}{6}))=csc(\frac{5\pi}{6})$

but csc $\frac{5\pi}{6}$ = $\frac{1}{sin (\pi/6)} = \frac{1}{sin 30} = \frac{1}{1/2} =2$

7 0

3 years ago

Write 79% as a fraction or mixed number in simplest form.

icang [17]

Answer: 39 25/50

Step-by-step explanation:

0.78 ( 78% ) = 39/50

0.79 ( 79% ) = 39/50 + 1/2

25 is half of 50

39 25/50

7 0

3 years ago

Read 2 more answers