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3 years ago

Find the solution of 2x+2y=10 and x=5y+20

Mathematics

1 answer:

Sever21 [200]3 years ago

8 0

Answer:

(15/2, -5/2)

Step-by-step explanation:

1. Sub x=5y+20 into 2x+2y=10 and simplify as shown below.

2(5y+20)+2y=10

10y+40+2y=10

12y+40=10

12y=-30

y=-30/12

y=-5/2

2. Sub in y=-5/2 into 2x+2y=10 to find x and simplify as shown below.

2x+2(-5/2)=10

2x-5=10

2x=15

x=15/2

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3 years ago

Read 2 more answers

I need help with this

OLga [1]

Answer:

121

Step-by-step explanation:

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3 0

3 years ago

Part a : solve - vp + 40 < 65 for v .

miskamm [114]

Answer:

$\large \text{Part a:}\\\\for\ d-\dfrac{25}{d}}$

$\large\text{Part b:}\\\\\boxed{r=\dfrac{7}{3}w-5}$

Step-by-step explanation:

$\text{Part a}\\\\-vp+400,\ \text{then}\ \boxed{v>-\dfrac{25}{d}}\\\\\text{if}\ d$

$\text{Part b}\\\\7w-3r=15\qquad\text{subtract 7w from both sides}\\\\-3r=-7w+15\qquad\text{divide both sides by (-3)}\\\\\boxed{r=\dfrac{7}{3}w-5}$

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3 years ago

What is the value of 5.4?

Galina-37 [17]

The value is .54 hope this helped

5 0

3 years ago

Partition a number line from 0 to 1 into sixth decompose 2/6 into 4 equal lengths.

Anon25 [30]

When we partition a number line from 0 to 1 into six, each segment has a length of 1/6 and the segments are:
1/6. 2/6. 3/6, 4/6, 5/6 , 6/6

Breaking 2/6 into 4 equal parts, we get each part equal to 1/12

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3 years ago