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Elza [17]
3 years ago
5

Y=4x+8 y=-x-7 solve by substitution

Mathematics
2 answers:
ValentinkaMS [17]3 years ago
8 0

Answer:x=15

Step-by-step explanation:

nikklg [1K]3 years ago
7 0

Step-by-step explanation:

Alrighty! here you go image.

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Huilan is 15 years younger than Thomas. The sum of their ages is 33 . What is Thomas's age?
Sphinxa [80]

h = t - 15

h + t = 33

Because we have a value of h, we can plug it into the second equation to solve for t.

t - 15 + t = 33

Add 15 to both sides.

t + t = 48

Combine like terms.

2t = 48

Divide both sides by 2.

t = 24

<h3>Thomas's age is 24.</h3>
6 0
3 years ago
Why is this not working <br><br> -2^2
BARSIC [14]

Answer:

-4

Step-by-step explanation:

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-(2)^2=-4

5 0
3 years ago
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(05.03 LC)
never [62]

Answer:

The correct answer is x = -5

Step-by-step explanation:

All vertical lines can we written in terms of x = (a number). You can find this number in the ordered pair under the x-coordinate. In this case it is -5.

8 0
3 years ago
A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 35 adult Americans an
Liula [17]

Answer:

Adult required in the case of “a” 28 and in the case of “b” the adult requirement is 19.

Step-by-step explanation:

(a) The percentage of adult that support the change is 20 percent.

Now calculate the number of adult required.

Given p = 0.20

Use the below condition:

np(1 – p) \geq 10 \\n \times 0.20 (1 – 0.20) = 10 \\n = 63 round off

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(b) The percentage of adult that support the change is 25 percent.

Now calculate the number of adult required.

Given p = 0.25

Use the below condition:

np(1 – p) \geq 10 \\n \times 0.25 (1 – 0.25) = 10 \\n = 54 (round off)

Since 35 adults are already there so required adults are 54 -35 = 19 .

6 0
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Consider the proportion 3:4 = 6:8. What is true about the cross products?
vitfil [10]
Cross products are equal
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3 years ago
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