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Maksim231197 [3]
4 years ago
8

How do you solve 4x+2y=10 x-y=13 using substitution

Mathematics
1 answer:
Readme [11.4K]4 years ago
3 0

\left \{ {{4x+2y=10} \atop {x-y=13}} \right.

x=13+y

4(13+y)+2y=10

52+4y+2y=10

6y=-42

y=-\frac{42}{6}=-7

y=-7

x=13-7=6

<span>\left \{ {{x=6} \atop {y=-7}} \right.</span>

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A line passes through the point −−6, 1 and has a slope of 52 .
zvonat [6]
Y - y₁ = m(x - x₁)
 y - 1 = 52(x - (-6))
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 y - 1 = 52(x) + 52(6)
 y - 1 = 52x + 312
   + 1           +     1
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5 0
3 years ago
Fifteen years later, a man will be two times as old as he was 15 years ago. How old is he now?
Inga [223]

Answer:

Let the present age of the man be x years.

Age of the man 15 years ago =(x−15) years and

Age of the man 15 years later =(x+15) years

According to the given condition, we have

(x+15)=2(x−15)

⇒x+15=2x−30

⇒x−2x=−30−15

⇒−x=−45 or x=45 years

Hence, the present age of the man is 45 years.

Step-by-step explanation:

Hope it helps you..

Your welcome in advance..

(◍•ᴗ•◍)

6 0
3 years ago
Read 2 more answers
Step by step explanation please so I can see how to do it
Basile [38]

Answer:

875 units

Step-by-step explanation:

35/5=7 AD and BC =7

25/5=5 the ratio of the to rect are 5

7(5)=35 EH and FG =35

25(35)=875

can you mark me the brainliest please

3 0
3 years ago
What two numbers multiply to -3000 and add to -10
yKpoI14uk [10]
The two numbers are -60 and 50.

Check-
-60*50=-3000 \\ -60+50=-10

6 0
4 years ago
Groceries was 11.20 befor sales tax. How much was the total cost for groceries after the 5% sales tax was charged
Dmitry [639]

11.2 * .05 = .56

sales tax = .56

11.2+.56 = 11.76

groceries plus tax = 11.76

5 0
4 years ago
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