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lord [1]
3 years ago
7

I need some help.......................

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
8 0

Answer:

x=10 , y=20

Step-by-step explanation:

2x=x+10

2x–x=10

x=10

y=2x

y=2(10)

y=20

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I have three times as much money as does my brother. Our combined total is $42. How much does each of us have?
nika2105 [10]
For an instance, i stands for the money that you have, and b stands for the money that brother has.
An equation system based on the problem would be
i + b = 42 (equation 1)
i = 3b (equation 2)

Use substitution method to solve the problem
substitute 3b into i in the equation 1
i + b = 42
3b + b = 42
4b = 42
b = 42/4
b = 10.5

substitute the value of b into the equation 1
i = 3b
i = 3(10.5)
i = 31.5

You have $31.5 and your brother has $10.5
4 0
3 years ago
(2a+b)/ b if a=-3, b=-2<br> 1:4<br> 2:-4<br> 3:7<br> 4:3.5
Ksivusya [100]

Answer:

4

Step-by-step explanation:

2(-3)=-6

(-6+(-2))/-2

(-6-2)/-2

-8/-2

4

3 0
3 years ago
?????????????????????
MakcuM [25]

Answer:

a. x

b. 35

c. 45

d. y

Explanation:

a. The independent variable is not dictated by any other variable. x is the only variable here that fits that description is x.

b. A coefficient is a constant that multiplies any variable. 35 multiplies x, so it is a coefficient.

c. A constant is a number that cannot change and isn't a coefficient. 45 cannot be changed.

d. The dependent variable is dictated by other variables. y is dictated by x, so it is the dependent variable.

7 0
4 years ago
Read 2 more answers
Rhada has a 5 pound bag of clay. Her craft project requires 5 ounces of clay for each batch of 6 ornament. If she uses all of th
Ivahew [28]
There are 16 ounces in a pound. 16*5 is 80. If you do 80 divided by 5 you get 16. Therefore, she can make 16 batches. If there are 6 ornaments in a batch, you do 16*6 which is 96.
8 0
4 years ago
PLEASE HELP I DONT UNDERSTAND
Stella [2.4K]

Answer:

B.

-4, 1, 5, 8

Step-by-step explanation:

Your domain is your set of x values.

Your points are as follows:

(-4, 8)

(8, 10)

(5, 4)

(1, 6)

(5, -9)

Your x-values here are -4, 8, 5, 1, and 5. Your domain only consists of unique x-values, so your domain consists of -4, 8, 5, and 1.

8 0
4 years ago
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