3 years ago

Find the number of ways to listen to 4 different CDs from a selection of 15 cds?

Mathematics

2 answers:

Mekhanik [1.2K]3 years ago

5 0

Answer: letter a should be the correct answer

Step-by-step explanation:

Alex787 [66]3 years ago

4 0

D is the answer for this question

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Upon descent, an airplane is 20,000 feet above the ground. The air traffic control tower is 200 feet tall. It is determined that

PIT_PIT [208]

Answer:

Base length of plane from control tower = 73,880 feet (Approx.)

Step-by-step explanation:

Given:

Height of plane from ground = 20,000 feet

Height of control tower = 200 feet

Angle of elevation from control tower = 15°

Find:

Base length of plane from control tower

Computation:

Height of plane from control tower = 20,000 - 200

Height of plane from control tower = 19,800 feet

Tan θ = Perpendicular / Base

Tan15 = 19,800 / Base length of plane from control tower

0.268 = 19,800 / Base length of plane from control tower

Base length of plane from control tower = 73,880 feet (Approx.)

6 0

3 years ago

There are 9 students in the school choir. The ratio of girls to boys in the choir is 5 : 4. Two girls are absent from practice o

pishuonlain [190]

Answer:

5:9

Step-by-step explanation:

4 0

3 years ago

The sum of two numbers is 32 One number is 8 more than the other. Identify the system of equations representing this problem

daser333 [38]

Answer:

x + y = 32

x = y + 8

Step-by-step explanation:

Sum of two numbers is 32:

x + y = 32

One number is 8 more than the other:

x = y + 8

3 0

3 years ago

I know it’s one, but how do you solve to get to one?

Kisachek [45]

Answer:

Step-by-step explanation:

1/15 + 7/30y + 1/2y = 4/5

2 + 7y + 15y = 24

2 + 22y = 24

22y = 24 - 2

22y = 22

3 0

3 years ago

How would you write 2/5 as a decimal

kondaur [170]

<span>2/5 as a decimal?
2/5 =0.4
hope it helps</span>

7 0

3 years ago

Read 2 more answers