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Korolek [52]
2 years ago
10

Please help! i will give you a lot of points if you do!

Mathematics
1 answer:
algol [13]2 years ago
5 0

Answer:

Khan Academy.

Step-by-step explanation:

You can go on khan academy and search up "percentages and numbers." The videos should immediately pop up. there are also lessons if you don't want to risk getting your problem wrong. If you are still confused and do not understand please just comment and I will respond.

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Rotate rectangle ABCD 90ºccw about the origin. What<br> are the image coordinates?
bazaltina [42]

Answer:

Step-by-step explanation:

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2. The rule for a rotation by 180° about the origin is (x,y)→(−x,−y) .

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3 years ago
A stack of 60 identical books at the book store was 135 inches tall.
koban [17]
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Donnel practiced the piano 3 hours longer than Marcus. Together they practiced the piano for 11 hours. How many hours did each b
andriy [413]
Here is the equation: x+(x+3)=11 ⇒x+x+3=11


You need to get "x" by itself so minus 3 from each side

x+x+3-3=11-3 ⇒ x+x=8 ⇒ 2x=8

Divide 8 by 2

8 ÷ 2=4

x=4

So each 4 is equivalent to 4 

Lets check:

4+(4+3)=11 ⇒ 4+4+3=11 ⇒ 11=11

So that means that Marcus practiced the piano for 4 hours and Donnel practiced for 7 
4 0
3 years ago
This is not an incomplete question, it has come from a very reliable source, please dont delete. If 60% of the students in Mr. B
nika2105 [10]

Answer:

35 students

Step-by-step explanation:

Take the number of students in the class and multiply by 60% and see if you get an integer number

28 * .60 =16.8  not an integer

32 * .6 =19.2

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7 0
3 years ago
The question is in the picture below:
Flura [38]
C&E


C 2x+Y>=c
Y>=-2x+c

E Y>=-2x+c
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2 years ago
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