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VikaD [51]
3 years ago
7

Evaluate the expression 2m +n for m=13 and n=3

Mathematics
1 answer:
andrew-mc [135]3 years ago
4 0

Answer:

This is equal to 29

Step-by-step explanation:

2(13)+3=29


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Jayne is planning to buy a computer that costs $680 at an electronics store. If she buys it online, she will save 15%. How much
Advocard [28]
See the image below for a demonstration. Hope this helps out.

7 0
3 years ago
A rectangle has an area of 54 square centimeters. The width is 3 more
Troyanec [42]

Answer:

W = 6

L = 9

Step-by-step explanation:

area = 54 = L x W

L = W + 3

substitute for L:

54 = W(W + 3)

W² + 3W = 54

W² + 3W - 54 = 0

(W + 9)(W - 6) = 0

W = 6

L = 6 + 3 = 9

7 0
3 years ago
What is the solution of 3(2x - 1) - 2(3x + 4) = 11x?
Eduardwww [97]

3(2x - 1) - 2(3x + 4) = 11x

  • Distribute 3 inside the parentheses.

6x - 3 - 2(3x + 4) = 11x

  • Distribute 2 inside the parentheses.

6x - 3 - 6x - 8 = 11x

  • Combine like terms.

-11 = 11x

  • Divide both sides by 11.
<h3>x = -1</h3>
6 0
3 years ago
Read 2 more answers
Which is the equation of the line that passes through the points (-4, 8) and (1, 3)?
MArishka [77]

Answer:

Therefore the equation is y=-x+4 (correct optlon: C)

Step-by-step explanation:

In order to find the equation that passes through both points, we can use the slope-intercept form of the linear equation:

y=mx+b

Where m is the slope and b is the y-intercept.

Using the given points on this equation, we have:

(-4,8):

(-4,8):8=m*(-4)+b

(-4,8):8=m*(-4)+bb=8+4m

(-4,8):8=m*(-4)+bb=8+4m(1,3):

(-4,8):8=m*(-4)+bb=8+4m(1,3):3=m+b

(-4,8):8=m*(-4)+bb=8+4m(1,3):3=m+b3=m+8+4m

(-4,8):8=m*(-4)+bb=8+4m(1,3):3=m+b3=m+8+4m5m=3-8

(-4,8):8=m*(-4)+bb=8+4m(1,3):3=m+b3=m+8+4m5m=3-85m=-5

(-4,8):8=m*(-4)+bb=8+4m(1,3):3=m+b3=m+8+4m5m=3-85m=-5m=-1

(-4,8):8=m*(-4)+bb=8+4m(1,3):3=m+b3=m+8+4m5m=3-85m=-5m=-1b=8+4*(-1)=8-4=4

Therefore the equation is y=-x+4 (correct optlon: C)

5 0
2 years ago
2x + 5<br> Find the val<br> 3x+15
Crank

Answer:

<u>Step 1:  Find the x</u>

2x + 5:  Solve

2x + 5 - 5 = 0 - 5

2x / 2 = -5 / 2

x = -5/2

3x + 15:  Solve

3x + 15 - 15 = 0 - 15

3x / 3 = -15 / 3

x = -5

3 0
3 years ago
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