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stepan [7]
2 years ago
7

Kate has a coin collection. She keeps seven of the coins in a box, which is only 5% of her entire collection. What is the total

number of coins in Kate’s coin collection?
A:12
B:14
C:120
D:140
Mathematics
2 answers:
tia_tia [17]2 years ago
8 0

Answer:

D. 140

Step-by-step explanation:

Rasek [7]2 years ago
7 0

Answer:

(D) 140 coins

Step-by-step explanation:

Kate kept seven coins in the box, which is 5% of the entire collection.

This means that 5% of the coins = 7 coins

To find the total number of coins in the box, we need to find 100% of the coins.

5% = 7 coins

To get to 100%, we multiply the equation by 20 (because 5 x 20 is equal to 100).

100% = 7 x 20 = 140 coins

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If Aditya can travel 80 km in 2 hours how many kilometres can he travel in 3 and half hours​
ivann1987 [24]

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What does it mean to analyze a graph and write a story for a function? Explain and give an example.
Evgesh-ka [11]

Answer:

Step-by-step explanation:

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7 0
3 years ago
A recommendation for wheelchair ramps is that the rise-to-run ratio be no greater than 1:12. This ensures that the ramps are nav
patriot [66]

Answer:

a. 12 feet b. 12 feet 0.5 inches c. 8.33 %

Step-by-step explanation:

a. How far out horizontally on the ground will it protrude from the building?

Since the rise to run ratio is 1:12 and the building is 12 inches off the ground, let x be the horizontal distance the ramp protrudes.

So, by ratios rise/run = 1/12 = 12/x

1/12 = 12/x

x = 12 × 12

x = 144 inches

Since 12 inches = 1 foot, 144 inches = 144 × 1 inch = 144 × 1 foot/12 inches = 12 feet

b. How long should the ramp be?

The length of the ramp, L is gotten from Pythagoras' theorem since the ramp is a right-angled triangle with sides 12 inches and 144 inches respectively.

So, L = √(12² + 144²)

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= 12√(1 + 144)

= 12√145

= 12 × 12.042

= 144.5 inches

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= 12 inches/144 inches × 100 %

= 1/12 × 100 %

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= 8.33 %

6 0
2 years ago
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