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andrew-mc [135]
3 years ago
15

What is the surface area of a cylinder with base radius 4 and height 5

Mathematics
1 answer:
mestny [16]3 years ago
7 0
A=226.19 A=2πrh+2πr2=2·π·4·5+2·π·42≈226.19467
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The volume of a cone is 3πx3 cubic units and its height is x units.
WINSTONCH [101]
I think the answer is c or d if im wrong sorry hope this helped tho :p
5 0
3 years ago
What is the solution to log2(2x^3-8)-2log2(x)=log2(x)
Charra [1.4K]
\bf \textit{Logarithm of rationals}
\\\\
log_a\left(  \frac{x}{y}\right)\implies log_a(x)-log_a(y)
\\\\\\
\textit{Logarithm of exponentials}
\\\\
log_a\left( x^b \right)\implies   b\cdot log_a(x)\\\\
-------------------------------

\bf log_2(2x^3-8)-2log_2(x)=log_2(x)
\\\\\\
log_2(2x^3-8)-log_2(x^2)=log_2(x)\implies log_2\left( \cfrac{2x^3-8}{x^2} \right)=log_2(x)
\\\\\\
\textit{since both sides are getting }log_2\textit{ we can simply undo that}
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\cfrac{2x^3-8}{x^2}=x\implies 2x^3-8=x^3\implies x^3-8=0
\\\\\\
x^3=8\implies x=\sqrt[3]{8}\implies x=2
5 0
3 years ago
Read 2 more answers
A club charges $40 for membership fee and $3/hour for using it. If he used the club for 60 hours what is the total cost.
Arlecino [84]
Total cost is 220 dollars. This is because 3 times 60 is 180 and plus membership fee of 40 dollars is 220 dollars.
7 0
3 years ago
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Solve the unknown angle measure?<br><br>Help Any1 ASAP! Will Mark Brainliest!
zlopas [31]

Answer:

X=40°

X=30°

X=50°

Step-by-step explanation:

Let our unknown angles be denoted by X

Part I

We are given the sum of the angles as 70°, the known as 30° and the unknown as X;

To find X, we subtract the known angle from the sum as:

X=70°-30°=40°

Hence X= 40°

Part II

We are given the sum of the angles as 70°, the known as 40° and the unknown as X;

To find X, we subtract the known angle from the sum as:

X=70°-40°=30°

Hence X= 30°

Part III

We are given the sum of the angles as 80°, the known as 30° and the unknown as X;

To find X, we subtract the known angle from the sum as:

X=80°-30°=50°

Hence X= 50°

3 0
3 years ago
Solve for X<br> 9(x+1)=25+x
professor190 [17]

Answer:

x=2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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