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il63 [147K]
2 years ago
9

The sum of 9 and twice a number

Mathematics
1 answer:
timofeeve [1]2 years ago
3 0

Answer:

2x + 9

Step-by-step explanation:

Let, "A number", be denoted by the variable, x.

Note the meaning of each part:

"the sum" means addition, or + .

"twice" means multiply by 2

Put the parts together:

The sum of 9 and twice a number

2x + 9 is your amsw34.

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gregori [183]
0.45 as a fraction is 45/100 and in simplest form it is 9/20.

0.45 = 47/100 = 9/20
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3 years ago
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Need help ASAP!!! <br> Multiple choice answers
kobusy [5.1K]

Answer:

A. 16.55

Step-by-step explanation:

What we know is the angle of 38° and the hypotenuse is 21. Before we find x (side b), we have to find side a first. TO find that multiply the sine of 38 by 21.

21 * sin(38)

<em>sin(38) calculates to 0.615661475.</em>

21 * 0.615661475

<em>Multiply 21 by 0.615661475</em>

side a = 12.928890975

Now to find x. Use this to find x: √21² - 12.928890975²

√21² - 12.928890975²

<em>Square both numbers</em>

√441 - 167.156221843

<em>Subtract 167.156221843 from 441</em>

√273.843778157

<em>Find the square root of 273.843778157</em>

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x ≈ 16.55, so the answer is A.

8 0
3 years ago
Help please due today
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I’m pretty sure Scale drawings is the correct answer!
6 0
3 years ago
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Pedro is playing a game where he has to roll a fair number cube with faces labeled from 1 to 6. What is the probability that he
Rudiy27

Answer:

50%

Step-by-step explanation:

Hope it helps

3 0
3 years ago
How to solve y in -(y+9)=10
Allisa [31]

Answer:


Step-by-step explanation:

- (y+9) = 10


Multiply through by -1 gives us


y+9 = -10


Subtract 9 from both sides


y = -19


That's your answer.


If you work it through it satisfies the equation.


That is:


- (-19 +9) = 10


-(-10) = 10


10 = 10


Boo ya!

5 0
3 years ago
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