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Kryger [21]
3 years ago
11

PLZ HELP! QUESTIONS ARE BELOW! :D

Mathematics
1 answer:
harkovskaia [24]3 years ago
8 0

Answer:

1) 243 in.²

Step-by-step explanation:

1)

A = 18 in. * 18 in. - 9 in. * 9 in. = 243 in.²

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Determine the quotient of 3 over 7 divided by 2 over 3 . 6 over 21 1 over 2 9 over 14 1 and 5 over 9
Naddika [18.5K]

um I dunno because I need points to ask a question sorry

8 1
3 years ago
Find the difference between 6/7 and 2/3 in lowest terms.
kramer

As per the problem,

we have been asked to find the difference of the given fractions.

The given fractions are \frac{6}{7} \ and \ \frac{2}{3}

\frac{6}{7}-\frac{2}{3}

Make denominator equal and simplify we get

\Rightarrow \frac{6}{7}-\frac{2}{3} =\frac{6}{7}*\frac{3}{3}-\frac{2}{3}*\frac{7}{7}  \\\\\Rightarrow \frac{6}{7}-\frac{2}{3} =\frac{18}{21}-\frac{14}{21} \\\\\Rightarrow \frac{6}{7}-\frac{2}{3} =\frac{18-14}{21}\\\\\Rightarrow \frac{6}{7}-\frac{2}{3} =\frac{4}{21}

The difference of the given fractions=4/21

8 0
3 years ago
Read 2 more answers
Which pairs of angles in the figure below are vertical angles?<br><br> Check all that apply.
erica [24]
I think it’s all of them.
7 0
4 years ago
Read 2 more answers
Any ideas for this question
goblinko [34]
<h3>Answer:  36pi (choice b)</h3>

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

Explanation:

Let x = length of side BC

This is the height of the cylinder. Think of a can that is laying on its side. The radius of this can or cylinder is CD

If point B has x coordinate of 12, and BC is 12 units long, this must mean point C has x coordinate of 12-x. This is plugged into the function to show that CD has a length of exactly \sqrt{12-x}

This is the radius of the cylinder

The volume of a cylinder is V = \pi*r^2*h

Plug in the radius and height mentioned to get this function in terms of x

V = \pi*\left(\sqrt{12-x} \ \right)^2*x

That simplifies to

V = \pi(12-x)x

or

V = \pi(12x-x^2)

Ignore the pi portion for now.

We wish to maximize the function f(x) = 12x-x^2

Use either calculus (specifically derivatives) or a graphing calculator to find that the vertex is at (6, 36)

This means x = 6 leads to the largest f(x) value being 36.

Therefore, the volume V is maxed out when x = 6 and we get a max volume of 36pi cubic units.

6 0
2 years ago
Using two numbers 40 and 32 what is the ratio
lutik1710 [3]

Answer:

80%

Step-by-step explanation:

How much is 32 out of 40 written as a percent value? Convert fraction (ratio) 32 / 40 Answer: 80%

6 0
3 years ago
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