MATHEMATICS MIDDLE SCHOOL

A cylindrical garbage can has a radius of 2.8ft and holds 86.21 cubic feet of trash. whats the height?A) 3.5ft
B) 9.8ft
C) 5.2ft
D) 1.9ft

Answers

Answer 1
Answer:

Answer:

Correct choice is A

Step-by-step explanation:

The volume of the cylinder can be calculated using formula

V=\pi r^2 h,

where r is the base circle radius  and h is the height of the cylinder.

In your case, V=86.21\ ft^3,\ \ \ r=2.8\ ft,

then

86.21=\pi\cdot (2.8)^2\cdot h,\n \nh=(86.21)/(7.84\pi)\approx (86.21)/(7.84\cdot 3.14)\approx 3.5\ ft.

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sebuah taman berbentuk persegi panjang dengan keliling (2x+24)m dan lebar (8-x)m. agar luas taman maksimum, panjang taman tersebut adalah....m

Neil measures the lengths of some objects in both yards and feet.There is a proportional relationship between the number of yards, x, and the number of feet, y.
x (yards) y (feet)
1 3
2 6
3 9
6 18
What is the constant of proportionality? Write your answer as a whole number or decimal.

Answers

The constant of proportionality(k) between a yard and a foot is 0.33.

What are ratio and proportion?

A ratio is a comparison between two similar quantities in simplest form.

Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant k and vice versa.

In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.

The variable feet and yards are in direct proportion.

Let,

yard = k(feet).

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k = 1/3 = 0.33.

learn more about proportion here :

brainly.com/question/7096655

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the constant of proportionality is 3 (multiplied by 3 to be exact)

Which is an advantage that crops may attain through genetic engineering? modifying pests surviving droughts growing organically maturing longer

Answers

You should try and format your questions better!
The answer is B. Surviving droughts

Answer:

B

Step-by-step explanation:

right on edge

Edgar wants to plot the ordered pairs

Answers

Answer:

A

Step-by-step explanation:

Which of the following is equivalent to (5 /k) + ((k + 3) /(k + 5)) ?A. (k +8) /(2k + 5)
B. (k + 8) /k(k + 5)
C. 5(k + 3) /k(k + 5)
E. (k^2+ 8k + 25) /k(k + 5)

Answers

(5)/(k)+(k+3)/(k+5)=(5(k+5))/(k(k+5))+(k(k+3))/(k(k+5))=(5k+25+k^2+3k)/(k(k+5))=(k^2+8k+25)/(k(k+5))\n\nAnswer:E

Answer:

E is the answer.

Step-by-step explanation:

Eighty-three million twenty-three thousand seven in standard form

Answers

83,237,000  this should be it 
82,237,000 is your answer

If a bird flies 4 hours, it can travel 15 miles. How many minutes doe sit take that bird to fly 90 miles? (PLEASE SHOW STEPS!)

Answers

240 minutes would be 4 hours. 15 miles times 6 is 90 miles. so you take 240 and times it by 6. which equals, 1440. so it would take 1440 minutes to fly 90 miles. hope this helps!
First figure out how many times 15 can go into 90. 
90/15=6
So you now know that it takes him 6 times the amount of time. So you would multiply 4 and 6
4*6=24
It will take the bird 24 hours to travel 90 miles.
Hope this helps. 
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