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3 years ago

Can someone plz help me with this I’m not understanding this it’s not A plz help

Mathematics

2 answers:

Elza [17]3 years ago

5 0

Answer:

D is the correct answer for this question

iVinArrow [24]3 years ago

3 0

Answer:

B. 29.7

Step-by-step explanation:

All you have to do is find the area of the half circle (r² × 3.14 × ½) and subtract that from the initial area of the rectangle ( 9×4 ) After doing that it gives you 29.7ft².

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Which expression is equivalent to StartFraction 2 a + 1 Over 10 a minus 5 Endfraction divided by StartFraction 10 a Over 4 a squ

dimaraw [331]

For this case we must simplify the following expression:

$\frac {\frac {2a + 1} {10a-5}} {\frac {10a} {4a ^ 2-1}} =$

We apply double C:

$\frac {(4a ^ 2-1) (2a + 1)} {10a (10a-5)} =$

We apply distributive property in the numerator and we take common factor 5 in the denominator:

$\frac {8a ^ 3 + 4a ^ 2-2a-1} {10a (5 (2a-1))} =$

We factor the numerator:

$\frac {(2a + 1) ^ 2 (2a-1)} {10a (5 (2a-1))} =\\\frac {(2a + 1) ^ 2 (2a-1)} {50a (2a-1)} =$

We simplify:

$\frac {(2a + 1) ^ 2} {50a}$

Answer:

$\frac {(2a + 1) ^ 2} {50a}$

Option D

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3 years ago

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marta [7]

Answer:

Step-by-step explanation:

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Factor completely 3x2 + x + 7.

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Answer:

-1

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