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2 years ago

An airplane travels 645 miles in 3 hours at a constant speed. How much time will it take traveling 1,075 miles?

Mathematics

1 answer:

Ierofanga [76]2 years ago

4 0

9514 1404 393

Answer:

5 hours

Step-by-step explanation:

Time is proportional to distance:

t/1075 = 3/645

t = 1075(3/645) = 5

It will take 5 hours to travel 1075 miles at that rate.

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2 years ago

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3 years ago

A circuit starts and ends at different vertices.<br> True<br> False

belka [17]

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Step-by-step explanation:

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2 years ago

Brand X sells 21 oz. Bags of mixed nuts that contain 29% peanuts. To make their product they combine brand A mixed nuts which co

masha68 [24]

Answer:

Brand X has to mix 8.4 oz of brand A mixed nuts which contain 35% peanuts and 12.6 oz of brand B mixed nuts which contain 25%, to obtain 21 oz. Bags of mixed nuts that contain 29% peanuts.

Step-by-step explanation:

We define

$B_{A}=1oz @ 35\%$ , wich means Brand A has 1 oz containing 35% peanuts.

$B_{B}=1oz @ 25\%$ , wich means Brand b has 1 oz containing 25% peanuts.

So we can build an equiation system

(1) $B_{a}+B_{b}=21$

(2) $0.35 \times B_{a}+0.25 \times B_{b}=0.29 \times 21$ , after fixing it a little

(2) $0.35B_{a}+0.25B_{b}=6.09$

As we can use any method to solve the system, I used a calculator wich thrown the following results $B_{a}=8.4 \ oz$ and $B_{b}=12.6 \ oz$ .

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2 years ago