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Natalka [10]
3 years ago
9

How do you do markdowns and markups

Mathematics
1 answer:
uysha [10]3 years ago
6 0
So the book guy mark downed the price of the books by 46%, also known as 0.46.  All decimals are less than 1.  So then, what you do is you take b, which is the variable defining the price of the book, then you multiply it by 0.46.  So the answer of b would be b x 0.46.  For C, you must do 29 x 0.54, and that will give you the answer for C.  Finally, in D, take the answer you got in C, and subtract that by 29.  This will give you your answer.
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Bottom left Angle: <br><br> Top Angle:<br><br> Bottom right Angle:
Arturiano [62]
Angles in a triangle always add up to 180 degrees

Here, we add up all the angles given to equal it to 180 degrees:

X + X + 10 + X + 5 = 180

Collect like terms -> 3X + 10 + 5 = 180

Add the whole numbers -> 3X + 15 = 180

Take 15 from to the other side (then make it negative) to isolate the X:
3X = 180 - 15

The subtract -> 3X = 165

Take 3 over to the other side (and it it should divide 165) and isolate the X -> X = 165/3

Finally, X = 55

Now wherever you see X in the triangle, replace it with 55.

With that, the top angle = 55 + 10 = 65 degrees
The bottom left angle = 55 + 5 = 60 degrees
The bottom right angle = 55 degrees
8 0
3 years ago
What are the solutions to this equation?<br> 7x2 − 28 = 0
valentina_108 [34]

Answer:

x = 2 or x = -2

Step-by-step explanation:

7x^2 - 28 = 0

7x^2 = 28

x^2 = 28/7 = 4

x = root(4)  or  x = -root(4)

x = 2 or x = -2

8 0
3 years ago
for points A, B, and C, AB = 2, BC = 3, and AC = 4. Select one: a. A, B, and C are noncollinear. b. A, B, and C form a right tri
victus00 [196]
Short Answer: A
Remark
C
Let's start with the false choices.
If they were colinear, then if AB + BC would = 5 or 1 depending on the location of C.   Answer C is not correct.

B
a b and c do not form a right triangle. a^2 + b^2 ≠ c^2
2^2 + 3^2 = 13 not 16 (which is what c^2 or 4^2 = )

D 
D is false. Equilateral triangles have 3 equal sides. 

A is true. Since A and C are opposites and you have eliminated C by arguing A. Then A must be the  answer.
3 0
3 years ago
How large a sample should be selected to provide a confidence interval with a margin of error of ? assume that the population st
Kisachek [45]
<span>Answer: Margin of Error (half of confidence interval) = 10 The margin of error is defined as the "radius" (or half the width) of a confidence interval for a particular statistic. Level of Confidence = 95 Ď: population standard deviation = 40 ('z critical value') from Look-up Table for 95% = 1.96 The Look-up in the Table for the Standard Normal Distribution utilizes the Table's cummulative 'area' feature. The Table shows positve and negative values of ('z critical') but since the Standard Normal Distribution is symmetric, only the magnitude of ('z critical') is important.</span>
7 0
3 years ago
Are the ratios 6:5 and 4:3 equivalent?​
Yuliya22 [10]
No
They are not equivalent.
5 0
2 years ago
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