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icang [17]
3 years ago
7

What is -0.75 as a fraction

Mathematics
2 answers:
erastovalidia [21]3 years ago
4 0

Answer:

-0.75 as a fraction is -3/4

Explanation:

-3 divided by 4 is -0.75

saveliy_v [14]3 years ago
4 0

Answer:

-0.75 as a fraction is -3/4

Step-by-step explanation:

it is three fourths because like a dollar it is mad up of 4 quarters and three quarters is 75 cents

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The ratio of two numbers is 8:7. The product of these numbers is 896. What is the smaller of these two
Darina [25.2K]

Answer:

  28

Step-by-step explanation:

You want the smaller of the two factors of 896 that have the ratio 8:7.

<h3>Setup</h3>

Let x represent the smaller of the two factors (the one we want to find). Then the larger factor is (8/7)x, and their product is ...

  x(8/7)x = 896

  (8/7)x² = 896

<h3>Solution</h3>

Multiplying by the inverse of the coefficient of x², we have ...

  x² = (7/8)(896) = 784

  x = √784 = 28 . . . . . . . . take square root

The smaller of the two numbers is 28.

__

<em>Additional comment</em>

The larger is (8/7)(28) = 32.

5 0
2 years ago
a cone has a volume of 1,570in3. If the height of the cone is 15 inches. Calculate the radius of the cone?
spin [16.1K]

Answer:

approximately 10

Step-by-step explanation:

Volume = 1/3h times \pi times radius square

1570 = 1/3 x 15 x 22/7 x r^{2}

1570 = 5 times \frac{22}{7} times r^{2}

1570 = 15.71r^{2}

\frac{1570}{15.71} = \frac{15.71 r^{2}}{15.71}

99.9 = r^2

\sqrt{99.9} = r

≅10

5 0
3 years ago
Rachel types 162 words in 3 minutes. Rachel types at a constant rate.
Mazyrski [523]

Answer:

rise

Step-by-step explanation:

8 0
4 years ago
Sample size: A researcher is trying to decide how many people to survey. Which of the following sample sizes will result in a co
oksian1 [2.3K]

Answer:

Step-by-step explanation:

Given that a researcher is trying to decide how many people to survey.

We have confidence intervals are intervals with middle value as the mean and on either side margin of error.

Confidence interval = Mean ± Margin of error

Thus confidence interval width depends on margin of error.

Margin of error = Critical value *\frac{\sigma}{\sqrt{n} }

Thus for the same confidence level and std deviation we find margin of error is inversely proportional to square root of sample size.

Hence for small n we get wide intervals.

So if sample size = 300, the researcher will get wider confidence interval

4 0
4 years ago
Need answer fast thx
bagirrra123 [75]

Answer:

thats A daddy-o

Step-by-step explanation:

there are 4 out of 12

1/3

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3 years ago
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