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pychu [463]
1 year ago
11

Help me on this asap​

Mathematics
1 answer:
AlladinOne [14]1 year ago
6 0

Answer:

<u>A</u>

Explanation:

Formula for the volume of a cone :<u>Volume (cone) = 1/3πr²h</u>

<u />

=========================================================

Given :

⇒ r = 4 units

⇒ h = 21 units

=========================================================

Solving :

⇒ Volume (cone) = 1/3 × π x 4² × 21

⇒ Volume (cone) = 16 × 7 × π

⇒ Volume (cone) = 112π units²

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Factor the polynomial.<br> 5x4 + 10x3 + 15x2
Xelga [282]

Answer:

5x^2(x^2 + 2x + 3)

Step-by-step explanation:

All the terms can be factored by 5 and x^2, so we get:

5x^2(x^2 + 2x + 3)

there are no more common terms so this is the answer

8 0
2 years ago
The rectangle below has a total perimeter of 125 cm:
Jlenok [28]

A rectangle has four sides, two equal to the width and two equal to the length. So, the perimeter is

p = 2w+2l

If we know that the width is 5, and the perimeter is 125, we have

125 = 2\cdot 5 + 2l \iff 125 = 10+2l

In your case, the unkown is called x, but the concept is the same:

2x+10 = 125

where x is the length of the rectangle.

6 0
3 years ago
Evaluate the expression for a = 3, b=12 , and c = 4. <br> 8ab over 2bc
aleksley [76]

Answer:

1

Step-by-step explanation:

8*12=96

96*3=288

4*12=48

48*2=96

96/96=1

3 0
3 years ago
Read 2 more answers
Which number of solution is this<br><br><br> Infinite solutions <br> No solution <br> One Solution
goldenfox [79]

Answer:

x=1 y=-3

Step-by-step explanation:

given example: y=6x+3

                          y=-x-4

6x+3=-x-4

6x+x=-4-3

7x=-7

x=-1

6*(-1)+3=-3

y=-3

5 0
2 years ago
What are some roots to the quadratic function f(x) = x^2 - 144?
Paladinen [302]
X²=144
x=√144
x=12 or x=-12
7 0
3 years ago
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