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Alex17521 [72]
3 years ago
9

Please someone help with Q4 and Q3 I’m really stuck and not sure if the calculations for Q3 that I’ve done are correct

Mathematics
1 answer:
Vladimir [108]3 years ago
7 0

Answer:

3. x + 18.

4. 8n + 16

Step-by-step explanation:

3. We have to calculate the area of wood present in the frame whose dimensions are given with the question.

Requires area = {(x + 3) × 1} + [(4 - 1) × {(x + 3) - (x - 2)}] = x + 3 + 3 × 5 = x + 18. (Answer)

4. The sum of four consecutive odd numbers where 2n + 1 is the smallest odd number will be

= (2n + 1) + (2n + 3) + (2n + 5) + (2n + 7)

= 8n + 16 (Answer)

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A company rents water tanks shaped like a cylinders. Each tank has a diameter of 12 feet and a height of 3 feet. The cost is $2
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Answer:

\$678.58

Step-by-step explanation:

step 1

<u>Find the volume of the tank</u>

we know that

The volume of a cylinder (water tank) is equal to

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in this problem we have

r=12/2=6\ ft -----> the radius is half the diameter

h=3\ ft

substitute

V=\pi (6^{2})(3)=339.29\ ft^{3}

step 2

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339.29\ ft^{3}*2\frac{\$}{ft^{3}}=\$678.58

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3 years ago
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Need some help with these problems please.
goldenfox [79]

Answer:

See below.

Step-by-step explanation:

a.  

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Answer:

a

Step-by-step explanation:

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