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11111nata11111 [884]
3 years ago
7

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:

1

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
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