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masya89 [10]
3 years ago
9

(5a-5)(2a+2) Find each product

Mathematics
2 answers:
weeeeeb [17]3 years ago
6 0
(<span>5a-5)(2a+2)
= 5a*2a -5*2a + 2*5a - 5*2
= 10a^2  - 10a + 10a  - 10
= 10a^2 - 10


The product of the equation is </span>10a^2 - 10
Stella [2.4K]3 years ago
6 0

(5a - 5)(2a + 2) \\10a {}^{2}  + 10a - 10a - 10 \\ 10a {}^{2}  - 10
You foil and the add like terms.
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3 years ago
Find the value of x........
raketka [301]

Answer:

x=23

Step-by-step explanation:

Hello There!

Remember the exterior angle of a triangle is equal to the opposite interior angles of a triangle

so

137-x=2x+3x-1

now we can solve for x

step 1 combine like terms

2x+3x=5x

now we have

137-x=5x-1

step 2 add 1 to each side

-1+1 cancels out

137+1=138

138-x=5x

step 2 add x to each side

-x+x cancels out

5x+x=6x

now we have

138=6x

step 3 divide each side by 6

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we´re left with x=23

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3 years ago
What is the missing angle? Please provide an explanation.
irina [24]

Answer:

64 degrees

Step-by-step explanation:

Lets find the measure of the other angle in the other triangle with measures of 84 and 36.

Since there are 180 degrees in a triangle, we just add the other two angles and subtract from 180:

84 + 36 = 120

180 - 120 = 60

So the measure of the other angle in the other triangle is 60. Since there is a right angle we subtract 60 from 90

90 - 60 = 30

So the triangle with the missing angle has two angles with measures of 86 and 30. Now we add the measures and subtract from 180 again.

86 + 30 = 116

180 - 116 = 64

So the missing angle has a measure of 64 degrees

5 0
3 years ago
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Step-by-step explanation:

8 0
3 years ago
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kifflom [539]

Answer:

Step-by-step explanation:

"The difference of two numbers is 15."

x-y = 15

x>y

"Five times the smaller number is the same as 9 less than twice the larger number."

5y = 2x-9

y = x-15

substitution

5(x-15) = 2x-9

5x-75 = 2x-9

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x = 22

y = x-15 = 7

7 0
3 years ago
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