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hoa [83]
3 years ago
5

Simplify the expression -12 + 2(3x + 5) + 4x

Mathematics
2 answers:
abruzzese [7]3 years ago
8 0
-2+10x ( you can use Socratic )
Mila [183]3 years ago
4 0
1) distribute the parentheses: 2(3x+5)
-12+6x+10+4x
2) then collect like terms: -12+10 and 6x+4x
and u should get: -2+10x
hope this helps!!
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The hypotenuse of a right triangle is 5inches long. The shorter leg is 1 inch shorter than the longer leg. Find the side lengths
Karolina [17]

Answer:

Hypotenuse = 5 in

Longer leg = 4 in

Shorter leg = 3 in

Step-by-step explanation

The longer leg = x

The shorter leg = x - 1

Now through Pythagoras theorem:

hyp^2 = leg1^2 + leg2^2

5^2 = x^2 + (x - 1)^2

25 = x^2 + x^2 - 2 x + 1^2

25 = 2 x^2 - 2 x + 1

2 x^2 - 2 x - 24 = 0

2 ( x^2 - x - 12) = 0

2 (x - 4) (x + 3) =0

then x = 4  or x = - 3

We use the positive answer since we are looking for a length

then longer leg is 4 inches long,

and therefore the shorter one is one inch shorter than 4 in . That is:

shorter leg = 3 inches

8 0
3 years ago
Write a paragraph that has an inverted triangle shape. The topic sentence should be, “Trees are helpful.” Include at least three
SashulF [63]
This kind of question should not be placed under math. Secondly, this type of question is not something to be answered by yes or no, or logical-exact answer because the idea here, is to use your thoughts about "Trees are helpful" This might be a very long, long, long answer - and only you can answer.
5 0
3 years ago
Write the expression that represents<br> 8. this phrase: The quotient of 9 and b
grandymaker [24]

Answer: 9/b

Hope this helps!

7 0
2 years ago
15000(1 + 0.05) ^4 = ?<br><br> A.$165,234<br> B.$18,300<br> C.$ 23,234<br> D.$ 62534
kondor19780726 [428]

Answer:

18,300

Step-by-step explanation:

6 0
3 years ago
All i need to know is what x and y is, so could someone help me pls n thx!!
dusya [7]

Step-by-step explanation:

x and y are variables the represent a number

6 0
3 years ago
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