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3 years ago

A cylinder has a base radius of 4m and a height of 6m. What is its volume in cubic m,

Mathematics

1 answer:

BlackZzzverrR [31]3 years ago

8 0

Answer:

301.4

Step-by-step explanation:

Volume of a cylinder=pi* $r^{2}$ *h. Assuming you want 3.14 for pi, we can substitue the 4m for r, 6 for h and 3.14 for pi.

V=3.14* $4^{2}$ *6

V=301.44

Since you want to round to nearest tenths, the answer is 301.4

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Given the function f(x)=x2+2x, the value of f(4) is

Citrus2011 [14]

Answer:

Step-by-step explanation:

f(x)=x^2+2x

Let x= 4

f(4)=4^2+2*4

= 16 + 8

= 24

5 0

3 years ago

Use the number line below, where RS=7y+3, ST=2y+9, RT=14y-8<br>a. What is the value of y?<br>y=

Ilia_Sergeevich [38]

RS+ST= RT
(7Y+3)+(2Y+9)= 14Y-8
9Y+12=14Y-8
5Y=20
Y=4

8 0

3 years ago

Solve x − 5y = 6 for x.

pentagon [3]

Answer:

All real numbers

Step-by-step explanation:

Solve a system of equations by elimination

With the equation given, you can solve for y to get: y = $\frac{1}{5}$ x - $\frac{6}{5}$

Then, substitute this value in on the equation.

x - 5( $\frac{1}{5}$ x - $\frac{6}{5}$ ) = 6

x - x + 6 = 6

6 = 6

The solution is all real numbers

8 0

3 years ago

If f(x) = x+3 and g(x) = VX-1,<br> what is (fºg)(26)?

scZoUnD [109]

Answer:

26V + 2

Step-by-step explanation:

This is the same as saying f(g(x)), where x = 26

First, lets figure out what g(x) is equal to when x = 26

g(26) = V(26) - 1 = 26V - 1

Now we input 26V - 1 into f(x) for x

f(26V-1) = (26V-1) + 3 = 26V + 2

8 0

2 years ago

Which equation is the inverse of y = 2x2 - 8?

kirill [66]

Answer:

$y = \sqrt{ \frac{x + 8}{2} }$

3 0

3 years ago