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avanturin [10]
2 years ago
10

Find the difference.

Mathematics
2 answers:
SCORPION-xisa [38]2 years ago
5 0
B is the correct answer, first remove brackets then simplify
klemol [59]2 years ago
5 0

Answer:

B

Step-by-step explanation:

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Zev read 15% of his 56-page book. Kelly read 12% of her 64-page book. Marneisha read 14% of his 68-page book Aleisha read 10% of
GrogVix [38]

Answer:

Marneisha with 9.52 pages.

Step-by-step explanation:

Zev: 56×0.15 = 8.4

Kelly: 64×0.12 = 7.68

Marneisha: 68×0.14 - 9.52

Aleisha: 72×0.10 = 7.2

3 0
3 years ago
3) Sandy wants to make cookies. To make cookies, she needs 15 cups of flour per
vekshin1

Answer:

She can make 1.6 batches

Step-by-step explanation:

24/15 = 1.6

6 0
2 years ago
Read 2 more answers
I need to find the perimeter and area of the regular polygon.
mezya [45]
The area of a polygon is given by the formula Area = ap/2 where a is the length of the apothem and p is the perimeter. The apothem is a line from the center of the polygon perpendicular to a side.

Depending on the formula you know, you can find the length of a side in 1 of 2 ways. 

The first way uses a triangle. Using the radius of the polygon you can create 8 congruent triangles. The center angle will be 360 / 8 = 45 and two side lengths of 20. You can find the length of the base using the law of cosines.

c^2 = 20^2 + 20^2 - 2(20)(20)(cos 45)
c^2 = 400 + 400 - 800(cos 45)
c^2 = 800 - 800(cos 45)
c = sqrt(800 - 800(cos 45)
c = 15.31

The second way is to use this formula:
r = s / (2 sin(180 / n))
20 = s / (2 sin(180/8)
(20)(2)sin(22.5) = s
(40)sin(22.5) = s
s = 15.31

We need to calculate the perimeter. As there are 8 sides (8)(15.31) = 122.48
Now we need to calculate the apothem using

a = S / (2 tan (180 / n)
a = 15.31 / (2 tan (180 / 8))
a = 18.48

Now solve for the area

Area = ap/2
Area = (18.48)(122.48)/2
Area = 1131.72

perimeter = 122.48
area = 1131.72
7 0
2 years ago
Write the equation in slope intercept form points (-11,6) (5,-2)
love history [14]
The slope intercept formula would be - \frac{1}{2}
6 0
2 years ago
Please help ASAP will give BRAINLIEST!
Ainat [17]

Answer:

i think the value of y is 8

5 0
1 year ago
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