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Serjik [45]
3 years ago
9

6. A bookstore recorded a decrease in the sales of paperback books over the past year. From last year to this year the store exp

erienced a 10% decrease in sales. This year the store sold 7740 books. How many did it sell last year?​
Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
5 0

Answer:

6966

Step-by-step explanation:

7740*10%=774

7740-774=6966

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How do you do this question?
Bess [88]

"T<u>he function is decreasing":</u>

This means the slope of the function will be negative at the given point.  Anywhere the line is going down, from left to right, is decreasing.  This eliminates choices A and C.

<u>"The function is concave down":</u>

This means the curve of the function will be open down (think of an upside down u).  This eliminates choice E.

<u>"f(x)>0":</u>

This is anywhere the curve is above the x axis.  This eliminates choice D.

The answer is Choice B) x=2.

Hope this helps!!

3 0
4 years ago
A movie cost $3,254,107 to produce. which digit in the hundred thousands  place ?
nekit [7.7K]
The hundred thousand place is the number that is 6 times to the right of the decimal:

In this case that number is 2
3 0
3 years ago
Read 2 more answers
Answer the question below please.
defon
I think  A is the answer
7 0
4 years ago
In triangle XYZ, angle Y = 45º and angle Z = 60º. If XZ = 4, then what is XY?
Katena32 [7]

Answer:

XY = 4.9

Step-by-step explanation:

Given

XZ= 4

\angle Y = 45

\angle Z = 60

Required

Determine the measure of side XY

To do this, we make use of sine law. This is as follows:

\frac{a}{\sin\ A} = \frac{b}{\sin\ B} = \frac{c}{\sin\ C}

In this case:

\frac{4}{\sin(45)} = \frac{XY}{\sin(60)}

Cross Multiply

XY * \sin(45) = 4 * \sin(60)

XY * 0.7071 = 4 * 0.8660

Make XY the subject

XY = \frac{4 * 0.8660}{0.7071}

XY = \frac{3.4640}{0.7071}

XY = 4.89888276057

XY = 4.9 -- <em>approximated</em>

3 0
3 years ago
-ax-20=-14 <br> solve the equation
fiasKO [112]
-ax-20=-14
add 20 to both sides
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3 years ago
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