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3 years ago

Someone pleaseee answer

Mathematics

2 answers:

yuradex [85]3 years ago

7 0

Answer:

Step-by-step explanation:

B-aby you got the stuff

dexar [7]3 years ago

4 0

I believe it’s 5. This is because when doing 5X3=15 and then 15+7=22 then solving for the other one and doing 5X2=10 and then doing 10+12=22. This shows that 5 is correct because you’re getting the same value for the solution. Hope this helps:)

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-5x - 35= -15<br> -5x = 25<br> X =

Zigmanuir [339]

X= -5 because you divide -5x by -5 to get x alone so you have to 25/-5 which is -5

3 0

3 years ago

Which of the following is a valid conclusion based on the given argument?

Marysya12 [62]

Answer:

Given that x=5, when we substitute in 5 for 2x + 3 = 13, the equation will turn out to be true.

Step-by-step explanation:

2x + 3 = 13 x=5

2(5)+3=13

10+3=13

13=13

6 0

3 years ago

Read 2 more answers

Using the guess and check technique, find two numbers that satisfy both conditions.

maksim [4K]

Answer:

Step-by-step explanation:

21 X 2 = 42

42-7 = 35

35 + 21 = 56

7 0

3 years ago

Read 2 more answers

If a is one-factor x, what is the other factor

NARA [144]

B-y is the another factor

5 0

3 years ago

Lizzie has 30 coins that total $4.80. All of her coins are dimes, D, and quarters, Q. Algebraically determine how many of each t

Gnom [1K]

Lizzie has 18 dimes and 12 quarters

<em><u>Solution:</u></em>

Let "d" be the number of dimes

Let "q" be the number of quarters

We know that,

value of 1 dime = $ 0.10

value of 1 quarter = $ 0.25

Given that LIzzie has 30 coins

number of dimes + number of quarters = 30

d + q = 30 ---- eqn 1

Also given that the coins total $ 4.80

number of dimes x value of 1 dime + number of quarters x value of 1 quarter = 4.80

$d \times 0.10 + q \times 0.25 = 4.80$

0.1d + 0.25q = 4.8 ------ eqn 2

Let us solve eqn 1 and eqn 2

From eqn 1,

d = 30 - q ---- eqn 3

Substitute eqn 3 in eqn 2

0.1(30 - q) + 0.25q = 4.8

3 - 0.1q + 0.25q = 4.8

0.15q = 1.8

From eqn 3,

d = 30 - 12

Thus she has 18 dimes and 12 quarters

6 0

4 years ago