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never [62]
3 years ago
14

You buy 50 of your favorite songs from a web site that charges $.99 for each song. What is the cost of 50 songs?

Mathematics
1 answer:
liberstina [14]3 years ago
5 0

Answer: $49.5

Step-by-step explanation: If each song costs 0.99 cents then you multiply the number of songs you are buying by the cost. So that would be 0.99×50=49.5

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187 is 55% how do you find the answer step by step that way I know how to solve problems like these.
IceJOKER [234]

Answer:

271.5

Step-by-step explanation:

100-55=45

45% of 187

187*45=8415

8415/100=84.15

84.15 is 45% of 187

271.15

5 0
3 years ago
Read 2 more answers
what is the equation of the line in slope-intercept form? that has a slope of -2/5 and passes through (15,-2)
Elden [556K]

Answer:

y=3x+11

Step-by-step explanation:

We have to write the equation of line which is passing through the point (−2,5) and parallel to the line y=3x+1. Hence, equation of straight line in point slope form is (y−5)=3(x+2) and in slope-intercept form is y=3x+11

4 0
3 years ago
Explicit formula for geometric
Harlamova29_29 [7]
Remark
What you have to do to learn the difference between recursive and explicit is try try the first 3 or 4 terms to see what you have and how you did it.

a1 = - 3
a2 = - 3 (1/8) = -3 / 8

a3 =  (a2) (1/8)
a3 =  (-3/8) * 1/8
a3 =  (- 3/64)

a4 =  a3 (1/8)
a4 = -3/64 * 1/8
a4 = - 3 / 512  

Take a good look at a4. What do you notice? No matter what, you are always multiplying by 1/8. That means that A and D are both wrong which they would have you raising by 3 or - 3 to some power.

So which one of B and C is correct?
The answer is which ever one will not change sign from what it started out with. All four terms are minus. 

In B the term is multiplied by plus 1/8. That will not change the sign of the next term.

So the answer is
a_n = - 3 * (1/8)^(n - 1) <<<<< answer
6 0
3 years ago
Which physical property would be best to use to distinguish hematite from the other minerals in the table? A. crystal system B.
tino4ka555 [31]
The crystal system or the luster would be the best answer for you.
7 0
3 years ago
Read 2 more answers
In order to estimate the difference between the average hourly wages of employees of two branches of a department store, two ind
liberstina [14]

Answer:

Step-by-step explanation:

Hello!

You have two populations of interest and want to compare them. If you define the study variables as:

X₁: average hourly wages of an employee of the Downtown store.

n₁= 25

X[bar]₁= $9

S₁= $2

X₂: average hourly wages of an employee of the North Mall store.

n₂= 20

X[bar]₂= $8

S₂= $1

Both samples taken are independent, assuming that both populations are normal and that their population variances are equal I'll use the Student's-t statistic with a pooled sample variance to calculate the Confidence interval:

95% CI for μ₁ - μ₂

(X[bar]₁-X[bar]₂) ± t_{n_1+n_2-2; 1-\alpha /2} * (Sa*\sqrt{\frac{1}{n_1} +\frac{1}{n_2} } )

Sa^2= \frac{(n_1-1)S_1^2+(n_2-1)S_2^2}{n_1+n_2-2}

Sa^2= \frac{24*4+19*1}{25+20-2}= 2.67

Sa= 1.64

t_{n_1-n_2-2;1-\alpha /2} = t_{43; 0.975} = 2.017

(9-8)±2.017*(1.64*\sqrt{\frac{1}{25} +\frac{1}{20} } )

[0.007636;1.9923]

I hope it helps!

6 0
3 years ago
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