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kvasek [131]
3 years ago
14

Someone pleaseee answer

Mathematics
2 answers:
yuradex [85]3 years ago
7 0

Answer:

B

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:

B.

Step-by-step explanation:

21 X 2 = 42

42-7 = 35

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7 0
3 years ago
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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

<h3>q = 12</h3>

From eqn 3,

d = 30 - 12

<h3>d = 18</h3>

Thus she has 18 dimes and 12 quarters

6 0
4 years ago
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