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k0ka [10]
3 years ago
7

If the music store is selling 4 CD's for $56, how much does 1 CD cost?

Mathematics
2 answers:
Anettt [7]3 years ago
7 0

Answer: 14 dollars

Step-by-step explanation:

you divide 56 by 4 and you would get 14 since you are trying to find the constant of proportionality or the unit rate.

Finger [1]3 years ago
3 0

Answer:

One CD cost 14 dollars.

Step-by-step explanation:

4x=56

4/4x=56/4

x=14

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If sin theta =1/4, theta in quadrant II, find the exact value of cos[theta +pi/6]
Mashcka [7]
Using cos addition formula:
use x for theta
cos(x+π/6)=cosx*cos(π/6)-sinx*sin(π/6)
sinx=1/4
cosx=√15/4
cos(π/6)=√3/2
sin(π/6)=1/2
cos(x+π/6)=(√15/4*√3/2)-(1/4*1/2)
cos(x+π/6)=(√45/8)-(1/8 )
cos(x+π/6)=(√45-1)/8)
6 0
3 years ago
A number is increased by 50% and then another 25%. By how much is it increased in total?
blsea [12.9K]

Answer:

87.5 percent

Step-by-step explanation:

when you have to increase a number by 50 percent you are multiplying it by 1.5

later when you increase the number by 25 percent you multiply it by 1.25

you can multiply 1.5 by 1.25 to get your answer

1.5 * 1.25 is 1.875

so the percent increase is 87.5 percent

3 0
2 years ago
Find the first five terms of the sequence in which a1 = –10 and an = 4an – 1 + 7, if n ≥ 2.
Naddika [18.5K]

Answer:

-10, -33, -125, -493, -1965

Step-by-step explanation:

a1 is -10, meaning the first term is -10. therefore the first term of the sequence has to be -10

7 0
3 years ago
Principle: $6500 Rate: 3%
Nikitich [7]

Answer:

Step-by-step explanation:

A)Initial amount deposited into the account is $6500 This means that the principal is P, so

P = 500

It was compounded daily. This means that it was compounded 360 times in a year. So

n = 360

The rate at which the principal was compounded is 3%. So

r = 3/100 = 0.03

It was compounded for 5 years. So

t = 5

The formula for compound interest is

A = P(1+r/n)^nt

A = total amount in the account at the end of t years. Therefore

A = 6500 (1+0.03/360)^360×5

A = 6500 (1+0.00008333333)^360×5

A = 6500 (1.00008333333)^1800

A = $7551.70

B) The interest earned is Total amount earned - principal. It becomes

7551.7 - 6500 = $1051.7

6 0
3 years ago
The table shows today's numbers of sales of four types of flowers at a flower shop. Based on this information, which prediction
horrorfan [7]
It is most likely B because they sold 7 more today. C is probably the second most likely but either less daisy’s will need to be sold or 6 more lily’s will need to be sold so go with B
3 0
2 years ago
Read 2 more answers
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