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alekssr [168]
3 years ago
15

[please help asap!]

Mathematics
1 answer:
Citrus2011 [14]3 years ago
5 0

Answer:

(a+b)^2 = a^2 + 2ab + b^2

(a-b)^2 = a^2 - 2ab + b^2

(a-b)(a+b) = a^2 - b^2

Step-by-step explanation:

They differ because you can either add the property or multiply

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If the sum of two consecutive odd numbers is 28 . find the numbers.​
Sauron [17]

Answer:

13 and 15

Step-by-step explanation:

13 and 15 are consecutive odd numbers and

13 + 15 = 28

7 0
3 years ago
Last week Sally had thirty-nine dollars. She washed cars over the weekend and now has sixty-four dollars. Write an equation that
mafiozo [28]

Answer:

64= 39+x

Step-by-step explanation:

x represents the unknown or in this case the money made to get to 64

39 is what she started with and 64 is the final total

4 0
3 years ago
Solve the system by substitution.<br> y=6x<br> y=3x+21<br> ( , )
Dimas [21]

Answer:

(7,42)

Step-by-step explanation:

Imput the 6x for the Y:

6x=3x+21

move the variable to the left

6x-3x=21

collect like terms:

3x=21

divide both sides by 3x and youll get this for X

x=7

Imput x=7 into the equation

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6 0
3 years ago
Pleaaaseeee help. Ill give brianliest!
aev [14]

What r the options so i can get an idea

6 0
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What is the sum of the exterior angles of a 10-gon figure?
Roman55 [17]

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