2 years ago

What’s 18m x 1/3m ? (The x is a multiplication sign)

Mathematics

2 answers:

grin007 [14]2 years ago

6 0

6m
18 x 1/3 is the same as 18 / 3 = 6

enyata [817]2 years ago

3 0

Answer:
18 m * 1/3 m
= 6 m

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The volume of a CONE-shaped hole is 75pi ft cubed. If the hole is 9 feet deep, what is the radius of the hole?

Arturiano [62]

Answer:

The radius of hole is 5 feet

Step-by-step explanation:

Depth of conical hole = 9 feet

Let the radius of hole be r

Volume of conical hole = $\frac{1}{3} \pi r^2 h$

So, Volume of conical hole = $\frac{1}{3} \pi \times r^2 \times 9$

We are given that volume of a CONE-shaped hole is 75pi ft cubed.

So, $\frac{1}{3} \pi \times r^2 \times 9=75 \pi$

$\frac{1}{3} \times r^2 \times 9=75$

$r^2=\frac{75 \times 3}{9}$

$r=\sqrt{\frac{75 \times 3}{9}}$

r=5

Hence The radius of hole is 5 feet

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2 years ago

The area of a square is tripled by adding 10 cm to one dimension and 12 cm to the other. Determine the side length of the square

Rina8888 [55]

Area = length *width
A = x²
3x² = (x+10)(x+12)
3x² = x²+10x+12x+120
3x² = x²+22x+120
3x²-3x² = x²+22x+120-3x²
0 = -2x²+22x+120
Factor to solve for x:
-2(x²-11x-60)
(x+4)(x-15)
x = -4 & x = 15 but we can't have a negative length so we eliminate 4. The length of the square is 15 cm.

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2 years ago

4. Kenneth needs to repaint a wall in his bathroom. The wall is 8 feet high and 14 feet long. Part of

AlexFokin [52]

Answer:

96 * 144 - 168 * 42

Step-by-step explanation:

So the area of the wall is 96 * 144

And the area of the tiled part is 168 * 42

So it would be 96 * 144 - 168 * 42

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2 years ago

14. You deposit $400 in a savings account that earns 7% interest compounded annually.

oksian1 [2.3K]

Answer:

A=p(1+r/100)^n

=400(1+7/100)^2

=400*1.14

=456

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1 year ago

What is the complete factorization of x^2 - 6x + 9

Finger [1]

Answer:

$(x-3)^{2}$

Step-by-step explanation:

Factor using the perfect square rule.

4 0

2 years ago