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Genrish500 [490]
2 years ago
15

Find the area of the figure below

Mathematics
1 answer:
alex41 [277]2 years ago
3 0

Answer: 29

Step-by-step explanatio?

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In a triathlon , Jenny swam for 1 hour , biked for 1.75 hours , and ran for 1 hour. Her average biking speed was 2 times her ave
Naddika [18.5K]

Jenny average swimming speed was 2.5 km/h, her average biking speed was 24 km/h and her average running speed was 12 km/h.

<h3>Speed</h3>

Speed is the ratio of total distance travelled to total time taken. It is given by:

Speed = distance / time

Let a represent the average swimming speed, b the average biking speed and c the average running speed.

Her average biking speed was 2 times her average running speed, hence:

  • b = 2c  (1)

Her average running speed was 8 times her average swimming speed. Hence:

  • c = 8a   (2)

Total distance of the triathlon was 55.5 kilometers. Hence:

a * 1 hour + b * 1.75 hour + c * 1 hour = 55.5   (3)

From equation 1, 2 and 3:

a = 2.5, b = 24, c = 12

Jenny average swimming speed was 2.5 km/h, her average biking speed was 24 km/h and her average running speed was 12 km/h.

Find out more on speed at: brainly.com/question/6504879

3 0
3 years ago
The price of an item has risen to $276 today. Yesterday it was $115. Find the percentage increase.
Nezavi [6.7K]
Are you kidding me, bro? lol

276-115=131
131 divided by 276 = 0.47

0.47% increase
6 0
3 years ago
There are 420 students at Virginia Middle School. For every 7 students, 4 of them are girls. How many girls are there at Virgini
Studentka2010 [4]

Answer:60

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
During his first vet visit, Pedro’s puppy weighed 6 1/8 pounds. On his second visit, he weighed 9 1/16 pounds. How much did he g
IceJOKER [234]
2 15/16 I think! hope it helps
4 0
3 years ago
sphere a has radius 4 and a hemisphere b has a radius 8. fin the ratio of the volume of A to the volume of b
salantis [7]

Answer:

A/B = 0.125

Step-by-step explanation:

Givens

r for Sphere A = 4

r for Sphere B = 8

Solution

Volume A = 4/3 pi r^3

r = 4

Volume A = 4/3 pi 4^3

Volume A = 4/3 pi 64

Note: there is no point in expanding the result. 4/3 and pi are going to cancel out when you set up the volume formula

Volume B = 4/3 pi * r^3

r = 8

Volume B = 4/3 pi * 8^3

Volume B = 4/3 pi * 512

Ratio A to B = 4/3 pi * 64 / 4/3 * pi * 512        Cancel 4/3 pi

Ratio A to B = 64/512

Ratio A to B = 1/8

Ratio A to B = 0.125

4 0
2 years ago
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