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Over [174]
3 years ago
8

What is the value of the x variable in the solution to the following system of equations?

Mathematics
1 answer:
defon3 years ago
7 0

ANSWER

The correct answer is C x=3.



<u>EXPLANATION</u>


We have

4x+2y=12---(1)


and


x-y=3---(2).


We solve the two equation simultaneously by elimination method. We need to be smart and eliminate y, since we are looking for x.



We first multiply equation (2) by 2

2x-2y=6---(3).


We add equation (3) and (1).


\Rightarrow 6x=18.

Dividing through by 6 gives

x=3.




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Mai's mother was 28 when Mai was born. Mai is now 12 years old. In how many years will Mai's mother be twice Mai's Age
noname [10]

Answer:

4

Step-by-step explanation:

Let x = the number of years

In x years, Mai's mother's age will be: 28 + x

                         and Mai's age will be:  12 + x

Then,                                      28 + x = 2(12 +   x)

Distribute the 2                      28 + x =    24 + 2x

Subtract 24 from each side     4 + x =            2x

Subtract x from each side             x = 4

In four years, Mai's mother will be twice Mai's age.

<em>Check: </em>

28 + 4 = 2(12 + 4)

   32   = 2 ×  16

   32   =   32

6 0
3 years ago
10) Amanda spent $43 on a magazine and
Vinvika [58]

Answer:

Each notepad would cost $5.

8 0
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a_sh-v [17]
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3 years ago
A rectangular swimming pool has a base of 200 square feet. The pool has a depth of 5 feet.
Goshia [24]

Answer:

D.) 1,000 ft³



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Step-by-step explanation:

Have a great rest of your day
#TheWizzer

6 0
2 years ago
Trophies for Gunther's soccer team will cost $6.25 each, plus 15 cents for every word on the engraving. Which equation could be
Lynna [10]

Answer:

Step-by-step explanation:

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to write the equation convert 15 cents to dollars by dividing by 100.

6 0
2 years ago
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