Ask question

Ask question

All categories

Mekhanik [1.2K]

3 years ago

8

-7x2y=-13 x-2y=11 Slove useing subtract

1 answer:

babunello [35]3 years ago

7 0

-7x+2y=-13
x-2y=11
add them euations

-7x+2y=-13
<u>1x-2y=11 +</u>
-6x+0y=-2

-6x=-2
divide both sides by -6
x=1/3

sub back
x-2y=11
1/3-2y=11
minus 1/3 both sides
-2y=10 and 2/3
divide both sides by -2 (or times both sides by -1/2)
y=-5 and 1/3

x=1/3
y=-5 and 1/3
(1/3,-16/3)

You might be interested in

Evaluate each expression if x= 6. 8+x

UkoKoshka [18]

Answer:

14

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Evaluate f(-3) for f(x) = 2^x<br> a. 1/8<br> b. -8<br> c. 8<br> d. -6

pickupchik [31]

Answer:

A

Step-by-step explanation:

f(-3) = 2^-3

to get rid of a negative in an exponent, move the whole thing to the denominator.

1/(2^3)

2^3 = 2×2×2

1/(2×2×2)

1/8

6 0

2 years ago

True or false<br> The solution set of 2x+5=x-3is {-8}

irinina [24]

Answer:

True

Step-by-step explanation:

2x+5=x-3 is (-8)

This is the correct answer

3 0

4 years ago

Read 2 more answers

8 if you were asked to load 225 boxesonto a truck and the boxes are crated, with each cratecontaining 9 boxes,how many crates wo

Mnenie [13.5K]

Divide the total boxes by the number that fit into one crate.

225 total boxes / 9 boxes per crate = 25 crates

8 0

3 years ago

Help please ASAP for 12pts

Phoenix [80]

I believe the anwser is l

6 0

4 years ago