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3 years ago

J / -2 + 7 = -12 j = ?

Mathematics

2 answers:

solong [7]3 years ago

8 0

Answer:

Step-by-step explanation: okay so the answer is 38

Aleks [24]3 years ago

6 0

Answer:

$\frac{j}{ - 2} + 7 = - 12$

$\frac{j}{ - 2} = - 19$

$j = 38$

mark brainliest please.

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X over 3/4 =7/8<br> put answer in fraction form<br> first answer get brainliest

Inessa05 [86]

Answer:

$\frac{21}{32} = x$

Step-by-step explanation:

$\frac{x}{\frac{3}{4}} = \frac{7}{8} \\ \\ \frac{3}{4} \times \frac{7}{8} = \frac{21}{32}$

Use multiplication [inverse of division] to figure this out.

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A 15 feet tree casts a shadow that is 8 feet long. What is the distance from the tip of the tree to the tip of it's shadow?

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Answer:

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Select the correct answer. Solve the equation using the method of completing the square. 2r2 + 16r - 8 = 0

adoni [48]

Answer:

r=-4+2 $\sqrt{5}$ , r=-4-2 $\sqrt{5}$

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lozanna [386]

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3 years ago

Simplify square root of ten times square root of eight.

Romashka-Z-Leto [24]

<h2>Explanation:</h2><h2></h2>

Here we need to simplify the square root of ten times square root of eight, so let's write this step by step:

Step 1. The square root of ten

$\sqrt{10}$

Step 2. The square root of eight

$\sqrt{8}$

Step 3. The square root of ten times square root of eight

$\sqrt{10}\times \sqrt{8} \\ \\ \\ \text{From radical property:} \\ \\ \sqrt{a}\times \sqrt{b}=\sqrt{ab} \\ \\ \\ So: \\ \\ \sqrt{10}\times \sqrt{8}=\sqrt{80} \\ \\ \\ But: \\ \\ \sqrt{80}=\sqrt{16\time5}=\sqrt{16}\sqrt{5}=4\sqrt{5}$

Finally, the correct option is:

<em>Four square root of five</em>

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