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lord [1]
3 years ago
11

Find the area of the circle

Mathematics
1 answer:
PIT_PIT [208]3 years ago
5 0
Gurl this isn’t college work....
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You are planning to purchase ten pencils of type A which cost a total of $14.00 and five pencils of type B which cost $15.00. A)
muminat

Answer:

A.1 type A pencil costs $1.40. 1 type B pencil costs $3.00.

B. Type A pencils are a better buy.

Step-by-step explanation:

A.14.0 divided by 10 is 1.4. 15.0 divided by 5 is 3.

B. 10 type b pencils cost $30.00. 10 type a pencils cost less, only $14.00, so it is a better buy. Hope this helped!

8 0
3 years ago
A rectangular prism has a length of 9 inches and a width of 8 inches. The lateral area is 170 square inches. What is the height
evablogger [386]

Answer:

The height of the prism is 5 inches

Step-by-step explanation:

The rule of the lateral area of the rectangular prism is

L.A = 2(L + W) × H, where

  • L is the length of the base of the prism
  • W is the width of the base of the prism
  • H is the height of the prism

∵ A rectangular prism has a length of 9 inches and a width of 8 inches

∴ L = 9 inches

∴ W = 8 inches

∵ The lateral area of it is 170 square inches

∴ L.A = 170 square inches

→ Substitute them in the rule above to find the height of the prism

∵ 170 = 2(9 + 8) × H

∴ 170 = 2(17) × 5

∴ 170 = 34 × H

→ Divide both sides by 34 to find H

∴ 5 = H

∴ The height of the prism is 5 inches.

3 0
3 years ago
Meganearns $20 by walking dogs she uses all of her earnings to buy a shirt for $12.85 and use it and buy some stickers for $0.65
kaheart [24]

\text{We're trying to find how many stickers she bought}\\\\\text{To find this, we have to calculate her expenses first:}\\\\20-12.85=7.15\\\\\text{To find how many stickers she bought, divide 7.15 by 0.65}\\\\7.15\div0.65=11\\\\\boxed{\text{She bought 11 stickers}}

8 0
3 years ago
A simple model of the core of a tornado is a right circular cylinder that rotates about its axis. If a tornado has a core diamet
mihalych1998 [28]

Answer:

26.3 rev/min

Step-by-step explanation:

The angular velocity (ω) is the linear velocity divided by the radius ( r= 80 feet)

ω = 220/80 = 2.75 rad/s

The angular velocity and the frequency are related by:

ω = 2π*f

2.75 = 6.28*f

f = 2.75/6.28

f = 0.438 rev/s * 60s/1min

f = 26.3 rev/min

7 0
3 years ago
Plzz answer these two questions....​
musickatia [10]

Step-by-step explanation:

For 1st question

the correct option is

a. 25

For second question

The correct option is

a. 81 / 4

Hope it will help :)

5 0
3 years ago
Read 2 more answers
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