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Two planes are 1470 mi apart and traveling toward each other. One plane is traveling 80 mph faster than the other plane. The planes pass each other in 1.5 h. Find the speed of each plane.slower plane    mphfaster planemph A solution that is 20% salt is mixed with a solution that is 30% salt. Which of the following are not possible choices for the concentration of salt in the resulting mixture? (Select all that apply.)20%25%27%30%35% Rubbing alcohol is typically diluted with water to 70% strength. If you need 2.8 oz of 45% rubbing alcohol, how many ounces of 70% rubbing alcohol and how much water should you combine? alcohol     ozwater     oz Let q {-9, 0, 8}. Evaluate |q| for each element of the set.____(first element)_____(second element)_____(third element)

Question

Two planes are 1470 mi apart and traveling toward each other. One plane is traveling 80 mph faster than the other plane. The planes pass each other in 1.5 h. Find the speed of each plane.

slower plane     mph
faster plane mph

 

A solution that is 20% salt is mixed with a solution that is 30% salt. Which of the following are not possible choices for the concentration of salt in the resulting mixture? (Select all that apply.)

20%
25%
27%
30%
35%
 
Rubbing alcohol is typically diluted with water to 70% strength. If you need 2.8 oz of 45% rubbing alcohol, how many ounces of 70% rubbing alcohol and how much water should you combine?
alcohol      oz
water      oz

 

Let q {-9, 0, 8}. Evaluate |q| for each element of the set.
____(first element)
_____(second element)
_____(third element)

check_circleAnswer
Step 1

There are two planes named as A and B which are 1470 miles apart therefore,

And time taken in passing each is 1.5 hr so,

147
d
0
t =1.5
help_outline

Image Transcriptionclose

147 d 0 t =1.5

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Step 2

Let the speed of one of the plane is denoted as follows:

Vл — х
А
help_outline

Image Transcriptionclose

Vл — х А

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Step 3

Since speed of other plane is 8...

— х +84
В
- 84 + 2х
АВ
help_outline

Image Transcriptionclose

— х +84 В - 84 + 2х АВ

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