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guapka [62]
4 years ago
15

Please Help! If (3x+5)^2=ax^2+bx+c, what is the value of a+b+c?

Mathematics
1 answer:
Alisiya [41]4 years ago
4 0

Answer:

64

Step-by-step explanation:

You open up the (3x+5)^2 and get:

9x^2 + 30x + 25

So...

a+b+c = 64

OR

You add the coefficient(s) and the constant together in the parentheses and get:

(3x+5)^2 --> (8)^2

So you square the 8 and get:

64

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3 years ago
Find the measures of the supplementary angles if:<br><br> Their difference is equal to 35°
schepotkina [342]
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</span><span>
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3 years ago
Read 2 more answers
Please please help!!!!!
serious [3.7K]

Answer:

188\sqrt{2}-8\sqrt{5} feet

Step-by-step explanation:

Well the perimeter is the sum of all sides that means

P= lenght + width + lenght + width

P=2(lenght + width)

so

P=2(2\sqrt{8}+3\sqrt{5}+45\sqrt{8}-7\sqrt{5} )\\\\P=2((2+45)\sqrt{8}+(3-7)\sqrt{5})\\\\P=2(47\sqrt{8}-4\sqrt{5})\\\\P=2(94\sqrt{2}-4\sqrt{5})\\\\P=188\sqrt{2}-8\sqrt{5}

6 0
4 years ago
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