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viva [34]
3 years ago
5

If π is rounded to a whole number, what is a reasonable estimate for the circumference of a circle with a diameter of 9 cm? 27 c

m 28 cm 30 cm 36 cm
Mathematics
2 answers:
a_sh-v [17]3 years ago
4 0
The estimate would be about 28 cm
Alexxx [7]3 years ago
3 0
Circumference of circle= 2*pi*r

You need to figure out the radius from the diameter. The radius is half of the diameter. Therefore, the radius in this problem is 4.5.

Since you are rounding pi to a whole number, 3.14 would be converted to 3. 

This is now the equation: 2*3*4.5

27 cm
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hram777 [196]

Answer:

i think its 70 percent

Step-by-step explanation:

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3 years ago
Seth is trying to find the unit price for a package of blank discs on sale at 10 for 5.49, his answer was $1.82 per disc is he c
tatyana61 [14]
Seth is incorrect, because on sale, 1 disc would cost about $0.55.
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5 0
3 years ago
The price of a dress was reduced from $40 to $30. By what percentage was the price of the dress reduced? STEP BY STEP
VARVARA [1.3K]

Answer:

The price was reduced by 25%

Step-by-step explanation:

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5 0
3 years ago
Write the expression sin 37 degrees in terms of cosine.
sergiy2304 [10]

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7 0
4 years ago
Mr. Hughes gave 5/14
kow [346]

Answer:

His savings were of $4,200.

Step-by-step explanation:

Mr. Hughes gave 5/14 of his savings to his son, 2/3 of the remainder to his daughter, and the rest to his wife:

This means that the son and daughter amount is:

\frac{5}{14} + \frac{2}{3}(\frac{9}{14})

As \frac{9}{14} is the remained that his son did not get. So

\frac{5}{14} + \frac{2}{3}(\frac{9}{14}) = \frac{15}{42} + \frac{18}{42} = \frac{33}{42}

Fraction his wife got:

1 - \frac{33}{42} = \frac{42}{42} - \frac{33}{42} = \frac{9}{42}

If his wife got $900, what were his savings?

Total savings are x, wife got \frac{9}{42} of x. So

\frac{9x}{42} = 900

9x = 900*42

x = \frac{900*42}{9}

x = 100*42

x = 4200

His savings were of $4,200.

5 0
3 years ago
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