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soldi70 [24.7K]
3 years ago
5

David ate 80 blueberries in one hour. How many did he eat in fifteen minutes?

Mathematics
2 answers:
Firlakuza [10]3 years ago
8 0

All we have to do is divide how many blueberries he ate in an hour (80) by how many times 15 minutes is in 1 hour (4)

80 ÷ 4 = 20

We can check our work by multiplying 20 by 4

20 x 4 = 80

Therefore, David ate 20 blueberries in 15 minutes


Hope this helps you!

Always remember you are a Work Of Art!

- Nicole :) <3

Ray Of Light [21]3 years ago
6 0
David ate 20 blueberries per hour because there is 60 minutes in an hour. and 60 divided by 4 is 15. So do 80 divided by 4 is 20.
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Answer:

E 240

Step-by-step explanation:

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16p = 1 - p  ;  17p = 1 ; p = 1/17 = 0.058  

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= (1 - 0.058) / (0.058)^2

0.942 / 0.003364

= 280 , closest to 240

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<u>Answer:</u>

The length of a paper clip chain is directly proportional to the number of paper clips. If a chain with 65 paper clips has a length of 97.5 inches then the length of chain with 14 paper clips is 21 inches.

<u>Solution:</u>

Given that the length of a paper clip chain is directly proportional to the number of paper clips. Directly propotional means when the length of paper clip increases, then the number of paper clips also increases in same ratio.

Hence, by above definition, we get  

\frac{l_{1}}{l_{2}} = \frac{n_{1}}{n_{2}}  ------- eqn 1

From question, for a chain with 65 paper clips has a length of 97.5 inches, we get  

l_{1} = 97.5 \text { and } n_{1} = 65

Similarly, for a chain with 14 paper clips with length to be found, we get  

n_{2}=14 \text { and } l_{2} = ?

Now by using eqn 1, we can calculate the length of 14 paper clips  is,

\frac{97.5}{65}=\frac{l_{2}}{14}

Rearranging the terms we get,

l_{2 }= \frac{97.5 \times 14}{65}

l_{2}=21 \text { inches }

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WILL GIVE BRAINLIEST
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Answer:

r=9⅓

Step-by-step explanation:

(10,r). (4,-3)

(x¹,y¹) (x²,y²)

gradient=<u>y²-y¹</u>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>x²-x¹

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3<u> </u><u> </u><u> </u><u> </u>4-10

multiply both sides by 3(4-10)to remove the denominators.

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3 4-10

(4-10)×4= (3-r)×3

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put the liketerms together

note* signs(- +) change when they cross the equal sign(=)

3r=4+40-16

3r=28

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r=9⅓

3 0
2 years ago
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