Answer:
99%
Step-by-step explanation:
83% * 7 tests = 581
solve for x (the percentage needed on the 8th test)
x = 99%
Answer: The height is roughly 20 mm
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Explanation:
Let's find the area of the circular base
This circle has a radius of 12, so r = 12
Plug this into the area of a circle formula to get...
A = pi*r^2
A = pi*12^2
A = pi*144
A = 144*pi
A = 144*3.14 <<-- replace pi with 3.14
A = 452.16
The area of the circle is roughly 452.16 square mm
There are two of these faces, so 2*A = 2*452.16 = 904.32 represents the total base area
The lateral surface area is unknown. Let's call it L for now. If we add the total base area (904.32) to the lateral surface area (L), we would get the complete surface area which is given to be 2411.52
So,
904.32+L = 2411.52
904.32+L-904.32 = 2411.52-904.32
L = 1507.2
The lateral surface area is roughly 1507.2 square mm
The formula for the lateral surface area of a cylinder is
L = 2*pi*r*h
We found L = 1507.2 and we know that r = 12, so let's use this to find h
L = 2*pi*r*h
1507.2 = 2*3.14*12*h
1507.2 = 75.36*h
1507.2/75.36 = 75.36*h/75.36
20 = h
h = 20
The height is roughly 20 mm
Answer:
7) 3m + 21
8) 8t + 12
9) 45 + 30r
10) 32n - 16n or just 16n
Step-by-step explanation:
just use the distributive property
<em><u>Hope this helped! Have a nice day! Plz mark as brainliest!!!</u></em>
<em><u>-XxDeathshotxX</u></em>
Answer:
m ∠ W is 58.2°
Step-by-step explanation:
Given:
XY = 15
WZ = 22
∠ XZY =25°
To Find:
m ∠ W = ?
Solution:
In right angle triangle Δ XZY, by Sine identity we have
∴ XZ = 35.49
Now in right angle triangle Δ WZX, by tangent identity we have
∴m ∠W =58.2°
