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Vladimir [108]
2 years ago
14

There are 30 students in a year 6 class.

Mathematics
1 answer:
xxMikexx [17]2 years ago
6 0

Answer:

32

Step-by-step explanation:

add

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when a boy complete 5 rounds around circular pond, he covers a distance of 1100 m. i)Find the perimeter of the pond.​
Law Incorporation [45]
I think it’s 220m. Since 5 rounds are equal to 1100m then you divide by 5 to see how much he covers in one
8 0
2 years ago
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You have a right circular cone of height 1530 mm and volume 2.2 x 104 in3 . Calculate the base diameter of the cone.
Alja [10]

Answer:

  37.35 in

Step-by-step explanation:

The volume of a cone is given by the formula ...

  V = (π/3)r²h

where r is the radius of the base and h is the height. We want to find the diameter of the base, so we can rewrite this in terms of diameter and solve for d. Please note that the height is given in millimeters, not inches, so a conversion is necessary.

  V = (π/3)(d/2)²h

  12V/(πh) = d²

  d = 2√(3V/(πh)) = 2√(3(2.2×10^4 in^3)/(π·1530 mm/(25.4 mm/in))

  = 2√(1.6764×10^6/(π·1.53×10^3) in^2)

  d ≈ 37.35 in

The base diameter of the cone is about 37.35 inches.

4 0
2 years ago
(MIDDLE SCHOOL MATH) what is the answer for b)?
lesya692 [45]

Answer:

because it easily displays all of the info

7 0
3 years ago
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a weather balloon is launched from a height of 475 feet above sea level. the balloon rises at a constant rate of 85 feet per min
GenaCL600 [577]

In this question , it is given that a weather balloon is launched from a height of 475 feet above sea level. the balloon rises at a constant rate of 85 feet per minute.

Here we use the slope intercept form, which is

y = mx+b

Where, y is the height h, x is the time, t. And m represents slope, which is 85.

b represents the initial height , which is 475 feet.

On substituting these values, we will get

h = 85t+475

And at t = 16 minutes, we will get

h = 85(16) +475 = 1835 feet

4 0
3 years ago
Waheeda wants to buy a skateboard. She has $15 in savings. A skateboard costs $75. How much more money does she need? Write and
erica [24]

Answer and Explanation:

Suppose Waheeda needs x more dollars.

Right now, she has $15. She needs x more, so we add x to 15. The end result we hope to have is $75. So, the equation is:

x + 15 = 75

To solve, we simply subtract 15 from both sides: x = 75 - 15 = 60

Thus, she still needs $60.

Hope this helps!

4 0
2 years ago
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