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Xelga [282]
10 months ago
9

Tell whether the number is written correctly in scientific notation. 9.9 times 10*-4

Mathematics
1 answer:
Mnenie [13.5K]10 months ago
6 0
\text{ 9.9 x 10}^{-4}

That is the correct number.

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Can anyone help? It’s not 14, I’ll give Brainly + 15 pts
Julli [10]

Short side length = x

Medium side = x + 7

Long side = 5x

Total 49, so

x + x + 7 + 5x = 49

If you combine like terms:

7x + 7 = 49

Subtract 7 from both sides

7x = 42

Divide both sides by 7

x = 6 inches.

8 0
2 years ago
5 is what percentage of 25? I’ll give brainliest:)
lord [1]

Hi there! :)

<h2>20%</h2><h2></h2>

To solve, we can simply divide and multiply by 100 to solve for the percentage:

5 / 25     = 5 ÷ 25 = 1/5 or 0.20

Multiply the decimal by 100 to solve for the percentage:

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3 0
3 years ago
If sin theta = -1/2 and lies in the third quadrant, what is the cos?
never [62]
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The angle of 30 degree on the 3rd Quadrant is equivalent to (formula and circle in the 1st photo) 180 + 30 = 210°.

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cos \: 30\degree = \sqrt{3} \div 2

Now just transfer the cos 30° to the 3rd Quadrant and the signal will be negative (as shown in the 2nd photo attached).

cos \: 210 \degree = - \sqrt{3} \div 2

5 0
3 years ago
Next Save 5 A student earns $70 over the summer. He spends of the total amount on movies. He then spends į of the remaining mone
Ganezh [65]

the student has left 75 because if you add 5 and 70 it gives you $75 that's how much the student had left.

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3 years ago
There is a construction zone on a highway. The speeds of vehicles passing through this construction zone are normally distribute
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