3 years ago

Nine and twenty hundredths as a decimal

Mathematics

1 answer:

Novosadov [1.4K]3 years ago

8 0

Answer:

0.920

I think this is right

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All of the following expressions are equal except2^-31/8 2^1/2^48

madam [21]

Answer:

(D)8

Explanation:

$\begin{gathered} 2^{-3}=\frac{1}{2^3}=\frac{1}{8} \\ \frac{2^1}{2^4}=\frac{2}{16}=\frac{1}{8} \end{gathered}$

Therefore, every of the option is equal to 1/8 except 8.

The correct choice is D.

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1 year ago

Help please I really don’t understand this

SashulF [63]

Answer:

78.5/250 = 31.4%

Step-by-step explanation:

divide the area of the circle (which is 25π = 78.5 sq in) by the area of the rectangle (which is 25x10 = 250 sq in)

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3 years ago

Choose the correct sum of the polynomials (6x3 − 8x − 5) + (3x3 + 6x + 2). 9x3 − 2x − 3 3x3 + 2x + 3 3x3 − 2x − 3 9x3 + 14x + 3

stiks02 [169]

9x3 - 2x - 3
Simplify 6x3-8x-5 + 3x3+6x+2

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3 years ago

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A grasshopper chirp 25 times in 15 seconds. How many times were a grasshopper chirp in two hours

Mumz [18]

Answer:

2 hours = 7200 seconds

7200/15 = 480

25x480 = 12000 chirps in 2 hours

Step-by-step explanation:

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3 years ago

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What is the probability of getting 60% or better on a true false exam with 50 questions

Ipatiy [6.2K]

Answer:

41.1764...%

Step-by-step explanation:

60% on 50 questions is 30/50 correct since 30÷50=.6=60%

Between 30 and 50(inclusive) there are 21 numbers.(30,31,32...49,50).

There are 51 possibilities of scores,1-50/50 or 0/50

21/51=0.411764...

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4 years ago