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3 years ago

What is the solution of the system?

Mathematics

1 answer:

Serjik [45]3 years ago

8 0

Answer:

(-13,-4)

Step-by-step explanation:

4x-8y=-20

9x+113=y

Substitute in y for 9x+113

4x-8y=-20

Substitute

4x-8(9x+113)=-20

Simplify

4x-72x-904=-20

Simplify

-68x-904=-20

Additive Prop. of Equality

-68x-904+904=-20+904

Simplify

-68x=884

Isolate the variable(x)

-68x=884

-68x -68x

Simplify

x=-13

Solve for y

9x+113=y

9(-13)+113=y

-117+113=y

-4=y

Check

4x-8y=-20

4(-13)-8(-4)=-20

-52+32=-20

-20=-20

9x+113=y

9(-13)+113=-4

-117+113=-4

-4=-4

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I pick a ball from a bag, replace it and then pick

Korolek [52]

Answer:

It should be 50%

Step-by-step explanation:

It should be 50% because there are 12 yellow balls, so it should be 50%.

Hope it helps you

7 0

3 years ago

HELP PLEASE the answrtr

lesantik [10]

first:

$\left(\frac{1}{4}+1\frac{1}{2}\right)\cdot \frac{1}{2} =\left(\frac{1}{4}+\frac{3}{2}\right)\cdot \frac{1}{2} =\frac{\left(\frac{1}{4}+\frac{3}{2}\right)\cdot \:1}{2} =\frac{\left(\frac{1}{4}+\frac{6}{4}\right)\cdot \:1}{2} =\frac{\frac{7}{4}\cdot \:1}{2} =\frac{\frac{7}{4}}{2} =\frac{7}{4\cdot \:2} =\frac{7}{8}$

So the first is the correct one.

<h3>Hope I helped you!</h3><h3>Success!</h3>

by a romanian guy.

8 0

3 years ago

Read 2 more answers

What are the answers to these?

Ksju [112]

A=10
B=-12
C=3.6

I need to make the answer 20 letters so here’s a cookie

4 0

3 years ago

Percent Means Tenth?

WITCHER [35]

Answer:

ten percent - a tenth part; one part in ten equal parts. one-tenth, tenth, tenth part. common fraction, simple fraction - the quotient of two integers. Based on WordNet 3.0, Farlex clipart collection.

8 0

3 years ago

PLS HELP! WILL GIVE BRAINLIST!

Vlad [161]

Answer:

y = 3x

Step-by-step explanation:

y = 13

x= 4

here

y∝x

that is

y= k x where k is constant

Since the equation is in the form $y=kx$ we know that

$13=K×4$

$k=13/4=3.25$

so we can write this

y = 3.23 x ≅ 3x

4 0

3 years ago