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liberstina [14]
2 years ago
5

Please please please help big grade please help

Mathematics
1 answer:
Blizzard [7]2 years ago
4 0

Answer:

2

Step-by-step explanation:

the scale factor is 2 because all the sides dubled

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Can someone plz help me find the area for this composite figure plzzzz I beg u
Anarel [89]

S_1 = \frac{a+b}{2}h = \frac{7+9}{2}*5=\frac{18*5}{2}= 9 * 5 = 45~m^2

S_\triangle = \frac{ab}{2} = \frac{5*9}{2} = \frac{45}{2} = 22,5~m^2

S = S_1 + S_\triangle = 45 + 22,5 = 67,5~m^2

Answer: 67,5 m².

5 0
3 years ago
Read 2 more answers
The square root of 71 can be found between which two consecutive whole numbers?
love history [14]
The square root of 71 is equal to 8.426149773176359...., which is between 8 and 9.

To check: square of 8 is 64, and of 9 is 81: 71 is between those two numbers, as it should be.
7 0
3 years ago
Helen purchased 3 copies of a book online at a 20% discount. She also paid $10 for shipping that was not discounted. How much wa
umka21 [38]

Answer:

The original price of the book was $12.50

Step-by-step explanation:

3x - 0.2(3x) + 10 = 40
30x - 2(3x) + 100 = 400
   30x - 6x + 100 = 400
           24x + 100 = 400
                     24x = 300
                         x = 12.50

3 0
2 years ago
Factor completely, then place the answer in the proper location on the grid.<br><br> a^6 - 25b^2
Solnce55 [7]
This is the difference of 2 squares 

square root of a^6  = a^3
and square root of 25 b^2  = 5b  so we get 

(a^3 + 5b)(a^3 - 5b)

Thats the answer
5 0
3 years ago
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Rashid [163]

Answer:

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5 0
3 years ago
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