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schepotkina [342]
3 years ago
14

Ms. Jones had a roll of plastic that was 9 and 2/3 feet long. She cut off a piece that was 5 and 4/9 feet long. She used the pie

ce of plastic and a piece of wood that was 3 and 1/3 yards long for a project.
How much plastic was left on the roll?

A.
4 and 2/6 feet

B.
4 and 2/9 feet

C.
4 and 2/3 feet

D.
4 and 1/3 feet
Mathematics
2 answers:
ra1l [238]3 years ago
5 0
I believe it would be letter B. 4 and 2/9 feet.
Lynna [10]3 years ago
4 0
The answer would be B. 4 and 2/9 because if you subtract 9 2/3 from 5 and 4/9 you will get 4 and 2/9.
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Solve the equation.
Sergeeva-Olga [200]
The answer to your question is 4
3 0
3 years ago
You need to construct fence around an area of 3136 ft2. What are the dimensions of the rectangular pen that minimize the amount
borishaifa [10]

Answer:

Step-by-step explanation:

The the area of the rectangular pen be A = LW

L is the length

W is the width

Given

A = 3136ft²

3136 = LW..........1

Given the perimeter P = 2L+2W....... 2

From 1; L = 3136/W

Substitute into 2

P = 2(3136/W)+2W

P = 6272/W + 2W

In order to minimize the amount of material needed, then dP/dW = 0

dP/dW = -6272/W² + 2

0 = -6272/W² + 2

6272/W² = 2

cross multiply

6272 = 2W²

W² = 3136

W = √3136

W = 56ft

Since A = LW

3136 = 56L

L = 3136/56

L = 56ft

Hence the dimensions of the rectangular pen that minimize the amount of material needed is 56ft by 56ft

7 0
2 years ago
Graham has enough fencing to enclose a rectangular garden with a perimeter of 140 feet. If the width of his garden is 20 feet le
defon

Answer:

Width = 25 feet

Step-by-step explanation:

Perimeter of a rectangle = 2L + 2W

W = L - 20

P = 140

Hence,

140 = 2L + 2(L - 20)

140 = 2L + 2L - 40

Collect like terms

140 + 40 = 4L

180 = 4L

L = 180/40

L = 45 feet

Length = 45 feet

Width = L - 20 feet

=( 45 - 20) feet

= 25 feet

6 0
3 years ago
Can somone help me please
enyata [817]

Answer:

The slides is 36 and the angle is 180.

Step-by-step explanation:

14.4m+15.6m+6m=36

90+30+50=180  

If they ask why it is 180 because when adding all the angles it has to give you a total of 180.

8 0
2 years ago
A kite is flying 11 ft off the ground. It’s like pulled taut and casts a 6ft shadow. Find the length of the line. If necessary,
oee [108]

Answer:12.5

Step-by-step explanation:

If you do 11 squared plus 6 squared it comes to 121 + 36= 157 but then you have to square root that to 12.5

8 0
3 years ago
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