Ask question

Ask question

All categories

3 years ago

11

3x+2y=11 y=5x-1 SUBSTITUTION WORTH 10 POINTS

1 answer:

cupoosta [38]3 years ago

5 0

X=1 and y=4. first I did
3x+2y=11
y=5x-1
and 3x+2(5x-1)=11
=3x+10x-2=11
=13x-2=11
cancel 2 out
13x=13
x=1. then simply add x in the original y equation,
y=5x-1
y=5(1)-1
y=5-1
y=4.
check your work
3(1)+2(4)=11
4=5(1)-1
again X=1 AND Y=4
Hope this helped

You might be interested in

What is the value of w?<br><br> A. 7<br> B. 3.5<br> C. 7square root of three<br> D. 14

Anarel [89]

Answer:

<h3>D. 14.</h3>

$\sf{\cos(30) = \frac{7 \sqrt{3} }{w} } \\ \sf{ \frac{ \sqrt{3} }{2} = \frac{7 \sqrt{3} }{w} } \\ \sf{w = \frac{7 \sqrt{3} \times 2 }{ \sqrt{3} } = 14}$

8 0

2 years ago

You mix 1/ 3cup of blue paint for every 2/ 3cup of yellow paint to make green paint. You use 4 cups of yellow paint. How much bl

Black_prince [1.1K]

Answer:

You will use 2 cups of blue paint for 4 cups of yellow paint.

Step-by-step explanation:

Given that:

There is 1/3 cup of blue paint for every 2/3 cup of yellow paint

We will find unit rate in terms of yellow paint.

2/3 cups of yellow paint = 1/3 cup of blue paint

Multiplying both sides by 3/2

$\frac{2}{3}*\frac{3}{2}=\frac{1}{3}*\frac{3}{2}\\1\ cup\ of\ yellow\ paint = \frac{1}{2}\ cup\ of\ blue\ paint$

Now,

4 cups of yellow paint = $4*\frac{1}{2}$ cups of blue paint

4 cups of yellow paint = 2 cups of blue paint

Hence,

You will use 2 cups of blue paint for 4 cups of yellow paint.

4 0

2 years ago

9. What is the formula to find the sum of the interior angles for any polygon?

SOVA2 [1]

polygon: (n-2) × 180

n: nonagon

octagon has 8 sides

3 0

3 years ago

What is answer to this its my home work

Elena L [17]

16 1/2 is the answer

7 0

3 years ago

Read 2 more answers

If F(x) = 5x - 7 and G(X) = x2 - 41, what is G(F(x))?

Viktor [21]

C is the answer to this

4 0

2 years ago