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3 years ago

[3×2⁵-13 ×(-2)] + 2³ ÷ (-2² +3²) -3

Mathematics

1 answer:

miskamm [114]3 years ago

8 0

Answer:

120.6 is the answer

Step-by-step explanation:

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A commercial jet can fly 868 miles in 2 hours with a tailwind but only 792 miles in 2 hours into a headwind. Find the speed of t

erik [133]

Answer:

The speed of the jet in still air is 415 mph and the speed of the wind is 19 mph

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

x -----> the speed of the wind in miles per hour

y ----> the speed of the jet in still air in miles per hour

we know that

With a tailwind

$y+x=\frac{868}{2}$

$y+x=434$ ----> equation A

With a headwind

$y-x=\frac{792}{2}$

$y-x=396$ ----> equation B

solve the system of equations A and B by elimination

Adds equation A and equation B

$y+x=434\\y-x=396\\------\\y+y=434+396\\2y=830\\y=415$

Find the value of x

$y+x=434$

$415+x=434$

$x=434-415$

$x=19$

therefore

The speed of the jet in still air is 415 mph and the speed of the wind is 19 mph

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3 years ago

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A local little league has a total of 60 players 80% of whom are right-handed. How many right handed players are there?

marshall27 [118]

An easy way to do it is divide sixty by five , then multiply by four, so your answer is 48.

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3 years ago

What is 2÷16×31+5980-10

vitfil [10]

Answer:47791/8 is the answer to your question but in improper fraction form

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A particular car gets fuel mileage of 36 mpg in the city and 12% more on the highway.

liq [111]

40.32 mpg, because 36x.12=4.32 + 36= 40.32

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3 years ago

PLEASE TELL ME WHAT I DID WRONG AND TELL ME THE ANSWER I WILL GIVE YOU 30 POINTS AND BRAINLESS

Setler79 [48]

Answer:

1. D. is Brand B

2. 60 mikes per hour

3. is 40 mins

4. is A. 3/20 u are multiplying

Step-by-step explanation:

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3 years ago

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