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Karo-lina-s [1.5K]
2 years ago
13

The sum of two numbers is 28. One number is 4 less than the other. What are the two numbers?

Mathematics
1 answer:
shepuryov [24]2 years ago
5 0

Answer:

12 and 16

Step-by-step explanation:

set up an equation:

since one number is 4 less than the other, let x represent it. for the other number, let x+4 represent it since it's 4 greater than x. set the equation equal to 28 because the sum of the two numbers is 28.

x+x+4=28

now, we solve the equation:

x+x+4=28

2x+4=28

2x=24

x=12.

Since x equals 12, to find the other number, which would be 4 greater than x, we would add:

12+4=16

So, the two numbers are 12 and 16.

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If you buy a car for 15500 an average on an average a new car loses 11% of its value the moment that is driven off the lot once
AfilCa [17]

Answer:

$13,795

Step-by-step explanation:

15500/x=100/11

(15500/x)*x=(100/11)*x       - we multiply both sides of the equation by x

15500=9.0909090909091*x       - we divide both sides of the equation by (9.0909090909091) to get x

15500/9.0909090909091=x  

1705=x  

x=1705

now we have:  

11% of 15500=1705

8 0
3 years ago
Which expression is equivalent to: (x +9)(x+3)
labwork [276]

Answer:

c

Step-by-step explanation:

x*x=x^2

x*9=9x

x*3=3x

9x+3x=12x

9x3=27

x^2+12x+27

6 0
3 years ago
Read 2 more answers
Ms. Palmer is buying pencils and erasers. The pencils come in packs of 8. The erasers come in packs of 12. Ms. Palmer wants to h
Aliun [14]
3 packs of pencils is 24 pencils total

2 packs of erasers is 24 erasers total

she will have equal amount of both

answer is 3packs pencils 2packs erasers

4 0
3 years ago
Out of 18 cookies, 1/3 are chocolate chip. How many of the cookies are chocolate chip?
ivann1987 [24]

Answer:

6

Step-by-step explanation:

that´s easy its basically dividing 3 by 18 which is 6

6 0
2 years ago
Part 1:
Gnom [1K]
P = 2(L + W)
L = 4/3W

P = 2(4/3W + W) <=== part 1 is D

when P = 28
28 = 2(4/3W + W)
28/2 = 4/3W + 3/3W
14 = 7/3W
14 / (7/3) = W
14 * 3/7 = W
42/7 = W
6 = W....width is 6 inches

L = 4/3W
L = 4/3(6)
L = 24/3
L = 8....length is 8 inches

A = L * W
A = 8 * 6
A = 48 in^2 <==== part 2

7 0
3 years ago
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