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PtichkaEL [24]
3 years ago
6

A shop owner bought 30 folders and some journals. He paid $82.50 for the folders. Each journal cost 10 times as much as a folder

. What was the cost of each journal?
Mathematics
1 answer:
AlexFokin [52]3 years ago
6 0
To find the cost of each folder first:
30/82.50 = 1/x
cross multiply:
30x = 82.50
find x.
x = 2.75
a journal is 10 times as much as a folder.
multiply.
2.75*10=27.50
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Mrs. Lobo earns a salary of $50,000 per year plus a 4% commission on her sales. The average price of a share
dem82 [27]

Answer:

a) 50,000 + 2x > 70,000

Step-by-step explanation:

Mrs. Lobo has an annual salary of $50000 per year plus 4% commission on her sales.

If she makes $y commission from sales, Mrs Lobo total income per year is:

$50000 + $y.

She makes 4% commission on her sales of share with the average price of a share = $50

Average commission from sales = 4% × $50 = 0.04 × 50 = $2

If she sales x shares in a year, her commission would be $2x for the year. Therefore her total income for that year would be:

50000 + 2x

The amount of shares Mrs Lobbo must sell to make an annual income of at

least $70,000 is given by the inequality:

50,000 + 2x > 70,000

8 0
3 years ago
Cuánto es la mitad de cinco octavos
shutvik [7]
Mitad de \frac{5}{8}'s
Multiplicar \frac{5}{8} por \frac{1}{2}
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4 0
3 years ago
After 8 points are added to each score in a sample, the mean is found to be M= 40. What was the value for the original mean
MArishka [77]

Answer:

The value for the original mean = 32

Step-by-step explanation:

Here, we want to calculate the original value of the mean.

Let the number of samples be n

Mathematically;

mean = Total value/n

Now, we added 8 to each of values; total value added = 8 * n = 8n

Now, for the new mean of 40; we have

(Total value + 8n)/n = 40

Total value + 8n = 40n

Total value = 40n -8n

Total value = 32n

kindly recall from the beginning of the solution;

mean = Total value/n

mean = 32n/n

mean = 32

So the original value of the mean is 32

6 0
2 years ago
can anyone help me out here? I will pay you 20 points
Cerrena [4.2K]

Answer:

The ordered pair that makes an equation true is called a solution

a)solution

b) not a solution

c) solution

d) solution

e)not a solution

f) not a solution

g) solution

h) not a solution

Step-by-step explanation:

The first number in an ordered pair is x, the second one is y

Plug in the numbers to x and y respectively

I'll give two examples so you know how to solve it

a) y=3x+1

-5=3(-2)+1

make sure you use pemdas (multiply first)

-5=-6+1

add

-5=-5

this is true (meaning it is a solution)

b) 6=3(-3) +1

6=-9+1

6 = -8

this is NOT true (not a solution)

If you have any questions feel free to ask

8 0
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Answer:

Step-by-step explanation:Use math papa.com it will help you with graphs

6 0
3 years ago
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