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Romashka [77]
3 years ago
13

The formula for the circumference of a circle is C=2πr. What is the radius of a circle with a circumference of 22 cm?

Mathematics
1 answer:
Anna35 [415]3 years ago
7 0

Answer:

3.5cm

Step-by-step explanation:

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A recipe for cooking rice indicates that 14 cups of boiling water are needed for 8 cups of rice.
Natali [406]

Hello!

This is a question about ratios and relating them to multiples of the ratio.

We are given that a recipe for cooking rice requires 14 cups of boiling water for every 8 cups of rice.

Then we are asked how many cups of rice are needing to be added if we have 28 cups of boiling water.

Since 28 is two times 14, and assuming that this ratio is proportional, we can multiply the cups of rice by 2 to find the equal ratio.

That means that 16 cups of rice should be added if we have 28 cups of boiling water.

In terms of ratios, we can set up the following proportion.

\frac{14}{8}=\frac{28}{x}

Then here, we can cross multiply and solve for x.

14x=224

x=16

Hope this helps!

8 0
2 years ago
The number of DVDs sold at a store in a month was 925 and the number of DVDs sold decreased by 12 per month. The number of Blu-r
sasho [114]

Answer:

  • See below

Step-by-step explanation:

<u>DVDs</u>

  • d = 925 - 12t

<u>Blu-rays</u>

  • d = 507 + 26t

<u>Solve the system:</u>

  • 925 - 12t = 507 + 26t
  • 26t + 12t = 925 - 507
  • 38t = 418
  • t = 418/38
  • t = 11

<u>Number of disks sold in 11 months:</u>

  • 925 - 12*38 = 469

There will be 469 DVDs and Blu-Ray discs sold per month in 11 months

3 0
2 years ago
George bought 30 packs of football cards.there were 14 cards in each pack. How many cards did George buy?
Naddik [55]
George bought 420 cards. Since 30x14=420
5 0
2 years ago
Read 2 more answers
Hi I need help with this homework so I can get a good grade on the test
Luda [366]

The answers are indeed nx and m.

6 0
9 months ago
Simplify where possible 3 (x+3)​
lawyer [7]
Distributive property
3(x+3)

3*x + 3*3

3x+9

divide by three to simplify

x + 3

if you’re supposed to solve it, subtract three

x = -3
8 0
2 years ago
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