3 years ago

Giving brainlest to whoever can solve ^^

Mathematics

1 answer:

SSSSS [86.1K]3 years ago

7 0

Answer:

Step-by-step explanation:

-8 + 12 =4

You might be interested in

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

6 0

3 years ago

Read 2 more answers

What does an algebraic expression always have?

Ivan

Algebraic expression always have a percent the x-ray and white rate that you have to multiply and flip around so I could get a total answer

4 0

4 years ago

Your history teachers is going to give you a 92 point assessment. There are 2 point questions and 3 point questions. If there is

Temka [501]

Answer:

Step-by-step explanation:

x = 2 point questions, y = 3 point questions

x + y = 40

2x + 3y = 92

Solving this we get x = 28, y = 12 so the answer is 28.

4 0

4 years ago

Read 2 more answers

Click to review the online content.

jekas [21]

The slope is the average rate of change they are synonyms.

5 0

4 years ago

2ah = f + 6. Solve for a

STALIN [3.7K]

Answer:

a= (f+6)/2h

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers