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dedylja [7]
3 years ago
9

Simplify (2d+3) + (3d-12)

Mathematics
2 answers:
8_murik_8 [283]3 years ago
3 0

Answer:

5d-9

Step-by-step explanation:

add the two sides together. the parentheses don't do anything to the equation really

xz_007 [3.2K]3 years ago
3 0

Step-by-step explanation:

2d+3d+3-12

5d-9

d=9/5

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4 0
3 years ago
The area of a rectangular tennis court is 140 square meters. It's length is 6 meters less than twice it's width. Find the dimens
Whitepunk [10]

Answer: length = 14 meters

Width = 10 meters

Step-by-step explanation:

The rectangular tennis court has two equal lengths,L and two equal widths,W

The area of the tennis court is expressed as

Area = Length × width

The area is given as 140 square meters. It means that

L× W = 140

It's length is 6 meters less than twice it's width. It means that

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( W + 7 ) = 0 or W - 10 = 0

W= -7 or W = 10 meters

The value cannot be negative so W = 10

L = 2W - 6 = 2×10 - 6

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3 0
4 years ago
a music teacher has 4 drum kits. Each kit has 2 drumsticks. Each drumstick cost $3. How many drumsticks does she have? What is t
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Answer: to replace all of the drumsticks it would cost $24


Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
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4 0
4 years ago
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Step-by-step explanation:

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therefore 5 multiplied by 8 equals 40

3 0
3 years ago
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