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4 years ago

Emily biked 9 miles in 3/4 hour. Which expression can she use to find her unit rate in miles per hour?

Mathematics

2 answers:

frosja888 [35]4 years ago

7 0

The expression will be 9 x 3/4

miskamm [114]4 years ago

3 0

Answer:

Step-by-step explanation:

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What is 2/5 divided by -1/2 minus 3/2

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Answer:

$- \frac{23}{10}$

Step-by-step explanation:

$\frac{2}{5} \div \frac{ - 1}{2} - \frac{3}{2}$

➡️ $- \frac{2}{5} \times 2 - \frac{3}{2}$

➡️ $- \frac{4}{5} - \frac{3}{2}$

➡️ $- \frac{23}{10}$

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Question 14 (1 point)

Trava [24]

Answer:

150 = x

Step-by-step explanation:

We can use a ratio to solve

100 batches x batches

------------------- = ---------------------

8 hours 12 hours

Using cross products

100 * 12 = 8x

1200 = 8x

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150 = x

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3 years ago

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Please help with #12 im confused that is the key but i dont get it

Svetllana [295]

Given Equation

$\boxed{ \tt \: (8 \sqrt{3} - 2 \sqrt{2} )(8 \sqrt{3} + 2 \sqrt{2})}$

Step by step expansion:

$\dashrightarrow \sf \: (8 \sqrt{3} - 2 \sqrt{2} )(8 \sqrt{3} + 2 \sqrt{2})$

$\\ \\$

$\dashrightarrow \sf \: (8 \sqrt{3})^{2} - (2 \sqrt{2} {)}^{2}$

Reason:

(a + b)(a - b) = a²- b²

$\\ \\$

$\dashrightarrow \sf \: (8 {}^{2} \times { \sqrt{3} }^{2} )- (2 \sqrt{2} {)}^{2}$

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$\dashrightarrow \sf \: (64 \times 3 ) - (2 \sqrt{2} {)}^{2}$

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$\dashrightarrow \sf \: (64 \times 3 ) - (2 {}^{2} \times \sqrt{2} {}^{2} {)}$

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$\dashrightarrow \sf \: 192- 8$

$\\ \\$

$\dashrightarrow \sf \: 184$

$\\ \\$

~BrainlyVIP ♡

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3 years ago

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I'm spending lots of points so please help ahaha-

umka2103 [35]

(2x+24)
(11b-33)
(8s-8)
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3 years ago

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