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3 years ago

The sum of a number and 15 is 63 find the number

Mathematics

2 answers:

Goryan [66]3 years ago

8 0

Answer:

x + x+15 = 63

2x + 15 = 63

2x = 63-15

2x = 48

Therefore, x = 48/2

= 24

Therefore x = 24

x + 15 = 39

Step-by-step explanation:

Hope it helps!!

tatuchka [14]3 years ago

3 0

Answer:

x = 48

Step-by-step explanation:

$x+15=63\\x=48$

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3 years ago

There are two numbers, one is 7 more than twice the other. The sum of the numbers is 43. Make the equation to find the smaller n

Mrrafil [7]

Answer:

Smaller number: 12

Greater number: 31

Step-by-step explanation:

Hi there!

Let x equal to the smaller number.

Let y be equal to the greater number.

1) Translate the information into equations

"One is 7 more than twice the other"

⇒ $y=2x+7$

"The sum of the numbers is 43"

⇒ $x+y=43$

2) Use substitution to solve for the smaller number

$x+y=43$

Plug the equation $y=2x+7$ into the above equation

$x+(2x+7)=43\\x+2x+7=43\\3x+7=43$

Subtract both sides by 7

$3x+7-7=43-7\\3x=36$

Divide both sides by 3 to isolate x

$\frac{3x}{3} = \frac{36}{3} \\x=12$

Therefore, the smaller number equates to 12.

3) Use substitution to solve for the greater number

$x+y=43$

Plug in x as 12

$12+y=43$

Subtract both sides by 12 to isolate y

$12+y-12=43-12\\y=31$

Therefore, the greater number equates to 31.

I hope this helps!

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3 years ago

if tyrone works 40 hours per week and has no other sources of income what is his total monthly cash inflow

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$18 \times 40 = 720$

$720 \times 4 = 2880$

$2880 - 1800 = 1080$

~~

Answer : B

~~

I hope that helps you out!!

Any more questions, please feel free to ask me and I will gladly help you out!!

~Zoey

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4 years ago

What is the least common multiple of the numbers 5, 25, and 15? OA. 25 OB. 50 O C. 75 OD. 100 O E. 125

Blizzard [7]

The answer is C. 75.

Explanation: Let’s go from smallest to largest.

A, 25, would not work because you can’t multiply 15 by a whole number to get 25.

B, 50, doesn’t work because again, you can’t multiply 15 with a whole number to get 50.

C, 75, is the CORRECT ANSWER because 5x15 is 75, 25x3 is 75, and 15x5 is 75. Each number can be multiplied by a whole number to get 75.

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3 years ago

The sum of a number and 15 is 63 find the number​

The sum of a number and 15 is 63 find the number