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Kryger [21]
3 years ago
11

At a store, there are 5 vases. Each vase has the same number of flowers. Sixteen flowers are sold. Now there are 24 flowers left

. How many flowers were in each vase
Mathematics
1 answer:
miss Akunina [59]3 years ago
8 0
There were 8 flowers in each vase. If you add 16 and 24 you will get 40.Then you divide 40 by 5 and you will get 8.He sold 2 vases because 8 times 2 is 16.
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When h=0, that is when it hits the ground

0=70-4t-16t²
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solve by copmleting the square

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times both sides by -1
70=4t+16t²
16t²+4t=70
divide both sides by 16
t²+1/4t=35/8
take 1/2 of the linear coefint and square it
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add that to both sides
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factor perfect square trionomial
(t+\frac{1}{8})^2=\frac{35}{8}+\frac{1}{64}
(t+\frac{1}{8})^2=\frac{280}{64}+\frac{1}{64}
(t+\frac{1}{8})^2=\frac{281}{64}
square root both sides, remember to take positive and negative roots
t+\frac{1}{8}=\frac{+/-\sqrt{281}}{8}
minus 1/8
t=\frac{-1+/-\sqrt{281}}{8}

t=\frac{-1+\sqrt{281}}{8} or t=\frac{-1-\sqrt{281}}{8}
the 2nd solution is not valid because that gives us a negative time, before the ball was dropped

so t=\frac{-1+\sqrt{281}}{8} is the solution
t≈1.97

1.97 seconds
7 0
4 years ago
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andriy [413]

Answer:

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Step-by-step explanation:

5 0
3 years ago
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Answer:

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Step-by-step explanation:

48+18x

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7 0
4 years ago
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Galina-37 [17]

Answer:

Option 2

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