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dezoksy [38]
3 years ago
6

Please help me quick ASAP!!!!!! Help me with all the questions!!!!!!!!

Mathematics
2 answers:
Verdich [7]3 years ago
8 0
1. A
2. A
3. 144 in^2
4. 128 cm^2
5. 169 cm^2
umka21 [38]3 years ago
5 0
Question 1:
Area=length times width
A=8 times 3
Answer is A

Question 2:
Area=length times width
Perimeter=2(Length+width)
A=6 times 4
A=24 
P=2(6+4)
P=2(10)
P=20
Answer is- A

Question 3:
A=12 times 12
A=144
Answer= 144 in.

Question 4:
Area=128 sq. cm.

Question 5:
Area of the tile=169 cm.

Hope this helps!



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Which of the following represents a combination? Select all that apply.
Svetradugi [14.3K]

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Combinations:

A committee consisting of three members with the same role

Selecting two sandwiches from a menu of 10

Step-by-step explanation:

A combination is a selection of items from a collection, such that the order of selection does not matter.

A permutation is a selection of items from a collection, such that the order of selection matters.

A. The PIN for a bank or credit card - order matters → permutation

B. A committee consisting of three members with the same role - order does not matter → combination

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3 years ago
Find the difference (20m+3)-(7m-5)
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Answer:

Simplifying

(20m + 3) + -1(7m + -5) = 0

Reorder the terms:

(3 + 20m) + -1(7m + -5) = 0

Remove parenthesis around (3 + 20m)

3 + 20m + -1(7m + -5) = 0

Reorder the terms:

3 + 20m + -1(-5 + 7m) = 0

3 + 20m + (-5 * -1 + 7m * -1) = 0

3 + 20m + (5 + -7m) = 0

Reorder the terms:

3 + 5 + 20m + -7m = 0

Combine like terms: 3 + 5 = 8

8 + 20m + -7m = 0

Combine like terms: 20m + -7m = 13m

8 + 13m = 0

Solving

8 + 13m = 0

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-8' to each side of the equation.

8 + -8 + 13m = 0 + -8

Combine like terms: 8 + -8 = 0

0 + 13m = 0 + -8

13m = 0 + -8

Combine like terms: 0 + -8 = -8

13m = -8

Divide each side by '13'.

m = -0.6153846154

Simplifying

m = -0.6153846154Step-by-step explanation:

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