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2 years ago

Divide. 8 2/5 ÷ (−2 1/5) Enter your answer as a mixed number, in simplified form, in the box.

Mathematics

1 answer:

koban [17]2 years ago

7 0

Answer:

3 45/55 or 3 9/11

Step-by-step explanation:

convert each term to an improper fraction

42/5 divided by -11/5

dividing fractions is the same as multiply by reciprocal of the second term

42/5 x -5/11 = -210/55

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BRAINLIEST can someone please help!!!!!

Zielflug [23.3K]

I don't know about the first one but for the second one:

${2}^{3x + 2} - {2}^{3x} = 48 \\ \Leftrightarrow {2}^{3x} {2}^{2} - {2}^{3x} = 48 \\ \Leftrightarrow {2}^{3x} ( 4 - 1) = 48 \\ \Leftrightarrow 3 \times {2}^{3x} = 48 \\ \Leftrightarrow {2}^{3x} = 16 \\ \Leftrightarrow {2}^{3x} = {2}^{4} \\ \Leftrightarrow 3x = 4\Leftrightarrow x = \frac{4}{3}$

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2 years ago

an auto transport truck holds 12 cars. A car dealer plans to bring in 1150 new cars in June and July. If an auto transport truck

marusya05 [52]

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2 years ago

Two step equation, last one thank you for helping

DerKrebs [107]

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2 years ago

Find the missing side length. Round your answer to the nearest tenth. 12

castortr0y [4]

4 squared+ 12 squared= c squared
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2 years ago

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CAN YOU GUYS PLEASE HELP ME?!!!!!!

DanielleElmas [232]

Answer:

6) C

$-2r\left(8r+5\right):\quad -16r^2-10r\\\mathrm{Apply\:the\:distributive\:law}:\quad \:a\left(b+c\right)=ab+ac\\=-2r\cdot \:8r+\left(-2r\right)\cdot \:5\\=-2\cdot \:8rr-2\cdot \:5r\\\mathrm{Simplify}\:-2\cdot \:8rr-2\cdot \:5r:\quad -16r^2-10r$

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$4a\left(a^2+7a+4\right):\quad 4a^3+28a^2+16a$

$\mathrm{Distribute\:parentheses}\\=4aa^2+4a\cdot \:7a+4a\cdot \:4\\=4a^2a+4\cdot \:7aa+4\cdot \:4a\\\mathrm{Simplify}\:4a^2a+4\cdot \:7aa+4\cdot \:4a:\quad 4a^3+28a^2+16a$

Hope this helps and have a great day!!!

$Sofia$

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2 years ago

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