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pychu [463]
3 years ago
8

An athlete runs 8 miles in 50 minutes on a treadmill. At this rate how far can the athlete run in 1 hour

Mathematics
2 answers:
alexdok [17]3 years ago
3 0
Set it up into ratio or proportion

8/50 :: x/60
Allushta [10]3 years ago
3 0
The athlete would run 9.6 miles in 1 hour because if you convert 1 hour into minutes you get 60 minutes and if you put it as a proportion 8/50 equals x/60 solve for x and 60 * 8 equals 480 and 480 divided by 50 equals 9.6
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Somebody please help me with this!
andreyandreev [35.5K]

8/x + 2 is equal to 8/4 + 2.

8/4 = 2

2 + 2 = 4

ANSWER: 4

5 0
3 years ago
Read 2 more answers
What is the factor tree of 99 and 165 and what is the GCF?
Shtirlitz [24]
99
/ \
11 9
/ \
3 3

165
/ \
33 5
/ \
3 11

GCF=3
5 0
3 years ago
The circumference of a circle is . What is the area of the circle in terms of ?
LenKa [72]

Answer:

\frac{225}{4}π

Step-by-step explanation:

Formula for the circumference of a circle

2r(π)

Area of a circle

πr²

2r(π)=x

x/2(π)=r

π(x/2(π))²=Area

π(x²/4(π)²)=Area

(x²/4(π))=Area

(15π)²÷4π=Area

\frac{225}{4}π

7 0
3 years ago
The ratio of quarters to dimes in a coin collection is 5 : 3. You add the same number of new quarters as dimes to the collection
kondaur [170]

Answer:

Step 1. The answer is no.

Step 2. The answer is b.

Step-by-step explanation:

I think Step 2 already sort of explains the reasoning behind the answer for step 1.

Hope this helps!

3 0
3 years ago
Read 2 more answers
21 marbles out of N are blue; probability of getting a blue one = 30%
MissTica
Probability=\frac{desired}{total}
0.3=\frac{21}{N}
0.3N=21
N=\frac{21}{0.3}
N=70

There are 70 total marbles. 
4 0
3 years ago
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