2 years ago

Solve by canceling -5x+8y=-4 6x-8y=-12

Mathematics

1 answer:

Vinil7 [7]2 years ago

7 0

Step-by-step explanation:

-5x+8y=-4

6x-8y=-12 8y and 8x cancel out

x=-16

To solve for y, substitute x=-16 back into the first equation

-5(-16)+8y=-4

80+8y=-4

8y=-84

y=-10.5

You might be interested in

Which unit is not a customary unit? <br> A. gallon<br> B. ounce<br> C. gram<br> D. cup

SOVA2 [1]

Answer:

D.Cup

Step-by-step explanation:

We humans do not use the term Cup anymore. We now use things like Grams,Ounces,Gallons,Or Quarts.

3 0

3 years ago

I need help with this and also I need someone who knows how to do math to answer my questions pleasee

klasskru [66]

Answer:

C (175+125)÷3

Hope this helps

5 0

3 years ago

Simplify. (−5p4z6u)3

sineoko [7]

The rules of exponents tell you that you can distribute the exponent to each of the factors. When one already has an exponent, those exponents multiply.
$(-5p^{4}z^{6}u)^{3}=(-5)^{3}\cdot(p^{4})^{3}\cdot(z^{6})^{3}\cdot u^{3}\\\\=-125p^{4\cdot 3}z^{6\cdot 3}u^{3}\\\\=-125p^{12}z^{18}u^{3}$