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Karo-lina-s [1.5K]
3 years ago
8

ON B ONLY (7th grade math) please help!!!

Mathematics
1 answer:
Alexxx [7]3 years ago
4 0

Answer:

I think 3 I dont know for sure because I did t do this in 7th grade

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PLS HELP :(
faust18 [17]

Answer: 47.1

Step-by-step explanation:

1/3πr^2h

=1/3×π×32×5

=15π

= 47.123889803847 feet3

4 0
2 years ago
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Big Jim's Pencil Shop can manufacture 240 pencils in 10 minutes. At this rate, how many pencils can Big Jim's Pencil Shop produc
VladimirAG [237]

Answer:

720

Step-by-step explanation:

240 x 3 = 720 pencils

3 0
3 years ago
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Angle 7<br><br> angle 1<br><br> angle 4<br><br> angle 3<br><br> angle 2<br><br> angle 8
mylen [45]

Answer:

The answer is angle 7, 3, and 2

Step-by-step explanation:

Angle 7 is vertical, angle 3 is alternate exterior, and angle 2 is corresponding.

4 0
3 years ago
Can someone help me to saved time on homework and plz solve 1 through 6
Debora [2.8K]

#1 = 54 yards

Step-by-step explanation:

1 foot= 3 yards. If you multiply 18 × 3 the answer is 54.

5 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
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