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3 years ago

5

Steve is buying apples for the fifth grade.each bag holds 12 apples.if there are 75 students total,how many bags of apples will

Steve need to buy if he wants to give one apple to each student?

2 answers:

kirill115 [55]3 years ago

7 0

72 divided by 12 equals 6 apples each student

densk [106]3 years ago

7 0

7 bags he will have enough for each student to get 1 Apple and will also have 9 extra apples

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A rolling pin has two identical cylindrical handles attached to a larger handle that is 12 inches long. The large cylinder measu

yaroslaw [1]

Answer:

Volume of the rolling pin = 246.09 $in^{3}$

Step-by-step explanation:

Length of larger cylinder L = 12 in

Diameter of larger cylinder D = 5 in

Diameter of two handles = 1.5 in

Length of two handles = 3 in

Volume of the rolling pin = Volume of two handles + Volume of larger cylinder

Volume of two handles = 2 ( $\pi r^{2}L$ )

Volume of two handles = 2 (3.14 × $0.75^{2}$ × 3 )

Volume of two handles = 10.59 $in^{3}$

Volume of larger cylinder = ( $\pi r^{2}L$ )

Volume of larger cylinder = (3.14 × $2.5^{2}$ × 12 )

Volume of larger cylinder = 235.5 $in^{3}$

Volume of the rolling pin = 10.59 + 235.5

Volume of the rolling pin = 246.09 $in^{3}$

6 0

3 years ago

Question 5: How long will it take for 2 g of a sample of iodine-131, which has a half-life of about 8 days, to decay to 0.04 g?

Aleonysh [2.5K]

This problem can be represented through the following equation

A = A₀(1/2)^t/h

where

A-----------> is the amount of substance left after time t

A₀ ----------> is the original amount---------> 2 g

h-------------> is the half-life-----------> 8 days

for A=0.04 g

t=?

0.04 = 2(1/2)^t/8

0.02 = (1/2)^t/8

Take ln on both sides:

ln(0.02) = ln [(1/2)^t/8]

ln(0.02) = (t/8)(ln 1/2)

t = 8*ln(0.02)/ln(1/2)

t = 45.15 days

the answer is 45.15 days

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Answer:

Yes

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