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3 years ago

15

If the ratio of the purple flower

2 answers:

ludmilkaskok [199]3 years ago

7 0

4:8 or 1:2

1+2=3

108=3 units
divide by 3
36=1unit
purple is 1 unit

36 purple flowers

muminat3 years ago

4 0

Im not positive but im pretty sure it's 27

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(8 × 2) × 5 = 8 × (2 × 5)

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Answer:

3 1/5

Step-by-step explanation:

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3 years ago

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The coordinates P(0, 1), Q(3, 2), R(5, -4) form a right triangle.

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3 years ago

You decide to enter in a rowing competition. To train, you go to the boat house and begin rolling down stream. You row for the s

fredd [130]

Answer:

Time spent rowing down stream $=100\ seconds$

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Step-by-step explanation:

Let speed of boat in still water be $= x\ ms^{-1}$

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Speed of boat down stream = $\textrm{Speed of boat in still water +Speed of current}= (x+10)\ ms^{-1}$

Distance rowed down stream = 2400 m

Time spent rowing down stream = $\frac{Distance}{Speed}=\frac{2400}{x+10}\ s$ = $\frac{Distance}{Speed}=\frac{2400}{x+10}\ s$

Speed of boat up stream = $\textrm{Speed of boat in still water -Speed of current}= (x-10)\ ms^{-1}$

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$\textrm{Time spent rowing down stream =Time spent rowing up stream}$

So,

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Cross multiplying

$2400(x-10)=400(x+10)$

Dividing both sides by $400$

$\frac{2400(x-10)}{400}=\frac{400(x+10)}{400}$

$6(x-10)=x+10$

$6x-60=x+10$

Adding 60 to both sides.

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Dividing both sides by 5.

$\frac{5x}{5}=\frac{70}{5}$

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Speed of boat in still water $=14\ ms^-1$

Time spent rowing down stream = $\frac{2400}{14+10}=\frac{2400}{24}=100\ s$

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Answer:

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