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Andrews [41]
3 years ago
12

PLEASE HELP WILL MARK BRAINLY

Mathematics
2 answers:
Korolek [52]3 years ago
7 0

Answer:

1.

12 maths book =40 pounds

21 maths book =<em>4</em><em>0</em><em>×</em><em>2</em><em>1</em><em>/</em><em>1</em><em>2</em><em>=</em><em>7</em><em>0</em><em> </em><em>pounds</em>

2.it may be 4.8 or 4.7 sorry question is not clear

3.

perimeter of trapezoid =sum of all side=12+10+19+15=56in

4.

area of trapezoid =1/2 (s1+s2)×h

=1/2 ×12(10+19)=174in²

5.

4²=16

√4=2

so 4² is 8times grater.

jasenka [17]3 years ago
4 0

Answer:

A, C, D, A, C

Step-by-step explanation:

This is one through five.

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