2 years ago

Please help i need this done by today

Mathematics

1 answer:

Stolb23 [73]2 years ago

5 0

Answer: D & B

Step-by-step explanation:

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Simplify 1/3a+3/5-1/15+2/3a

Misha Larkins [42]

Answer: $\frac{15+8a}{15a}$

Step-by-step explanation:

$=\frac{1}{3a} +\frac{3}{5} -\frac{1}{15}+ \frac{2}{3a} \\= \frac{1}{3a} +\frac{8}{15} +\frac{2}{3a} \\=\frac{5+8a+10}{15a} \\=\frac{15+8a}{15a}$

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1 year ago

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Billy was counting the number of wheels and bike seats at the playground. He saw tricycles and bicycles. He counted 79 wheels an

mart [117]

I think the answer is 25.5. Although, I don't know how you would have half a bike unless there was a 3 wheel bike which would make the answer 24.

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3 years ago

What is the surface area of the cylinder? Express the answer in terms of pi

Sholpan [36]

Bonjour,

answer ≈ 522.92

working
A= 2πrh+2πr^2
=2 x π x 4 x 18+2 x π x 4^2
≈552.92031

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3 years ago

Find the altitude of a cylinder with with a radius of 9 and a surface area of approximately 791.68 units2.

Vika [28.1K]

In this question , it is given that we have a cylinder with with a radius of 9 and a surface area of approximately 791.68 units square.

The formula of surface area of cylinder is

$A= 2 \pi r^2 + 2 \pi r h$

Substituting the values of A and r, we will get

$791.68 = 2* \pi * 9^2 + 2 * \pi * 9*h
\\
791.68 = 162 \pi + 18 \pi h
\\
791.68 -162 \pi = 18 \pi h
\\
h = \frac{791.68 -162 \pi}{18 \pi}
\\
h =5 units$

So the height of the cylinder is 5 units .

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3 years ago

In the function f(x) = 3x + 2, f(5) =

Rudiy27

Answer:

Step-by-step explanation:

3(5)+=17 plug 5 in for x then solve hope this helps

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2 years ago