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stealth61 [152]
3 years ago
9

The radius of a circle is 4 centimeters. What is the circle's circumference?

Mathematics
2 answers:
IrinaK [193]3 years ago
3 0

8pi

C=2pir

We’re given that the radius (r) is 4

So replace r with 4

C=2(pi)(4)

C=8pi

Elanso [62]3 years ago
3 0
The answer to this question is C≈25.13cm
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Convert the following metric units of weight. a. 40 centigrams to grams b. 53 milligrams to grams c. 0.54 grams to decigrams d.
liubo4ka [24]

Answer:

a) 0.4 grams

b) 0.053 grams

c) 5.4 decigrams

d) 2300 milligrams

Step-by-step explanation:

a)

To convert centigrams to grams you have to divide by 100.

40 centigrams = \frac{40}{100} grams

                                        =0.4 grams

b)

To convert milligrams to grams you have to divide by 1000.

53 milligrams = \frac{53}{1000} grams

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c)

To convert grams to decigrams you have to multiply by 10.

0.54 grams = 0.54*10 decigrams

                                        =5.4 decigrams

d)

To convert grams to milligrams you have to multiply by 1000.

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4 0
3 years ago
Pam likes to practice dancing while preparing for a math tournament. She spends 80 minutes every day practicing dance and math.
SVETLANKA909090 [29]

Answer:

Part A)

x+y=80

y=x+20

B)

30 minutes

C)

no

If Pam was to spend 60 minutes practicing dance, then she would only get 20 minutes of math. 60-20=40. She would be practicing dance 40 minutes more than math, not just 20.

3 0
3 years ago
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antoniya [11.8K]

Answer:

2/3

Step-by-step explanation:

If the line is perpendicular, multiply the slope by -1 to find the answer

7 0
3 years ago
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