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sasho [114]
3 years ago
7

How far will a wheel of radius 7 cm travel in two revolutions

Mathematics
1 answer:
Svetllana [295]3 years ago
5 0

Answer:

  • 87.92 cm

Step-by-step explanation:

<u>The travel is 2 circumferences:</u>

  • 2C = 2*2πr = 4πr = 4*3.14*7 = 87.92 cm
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Write 420 as a product 9f prime numbers​
stich3 [128]

Answer:

2, 2, 3, 5, 7 that is the farthest you can go

Step-by-step explanation:

2,2,3,5,7 prime factorization of 420 but impossible to get 9 factors

5 0
3 years ago
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Eduardwww [97]

63 is your answer :)

8 0
3 years ago
Judy pays $29 for 8 gallons of gas and 2 bottles of water. Carmen pays $45 for 12 gallons of gas and 4 bottles of water. How muc
Dmitry [639]
G=gas
w=bottle of water

8g + 2w = 29
12g + 4w = 45
I'm going to use elimination to cancel out the variable w by multiplying the first equation by -2.

-16g - 4w = -58
12g + 4w = 45
-4g = -13
/-4 /-4
g = 3.25

Now plug it into an equation, any equation.
8 (3.25) + 2w = 29
26 +2w=29
w=1.5
Now to check, plug it into both equations if you want.

12 (3.25) + 4 (1.5)=45
39 + 6=45

One bottle of water is $1.50, while one gallon of gas is $3.25.
5 0
4 years ago
John spends 22% of his monthly budget on his car payment, which is $400. Which proportion can be used to calculate John’s total
nikitadnepr [17]

Answer:

...

5 days ago — John spends 22% of his monthly budget on his car payment, which is $400. Which proportion can be used to calculate John's total monthly

7 0
3 years ago
Plz help!! Will give 30 points!!
Inessa [10]

Answer:

B) 12

Step-by-step explanation:

C is the circumference, d is the diameter, and r is the radius.  They are related by the following equations:

d = 2r

C = πd = 2πr

If d = 6.0, then r = 3.0.

If C / C' = 0.25, then:

(2πr) / (2πr') = 0.25

r / r' = 0.25

3 / r' = 0.25

r' = 12

8 0
4 years ago
Read 2 more answers
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