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forsale [732]
2 years ago
13

What is the area of the following circle? D = 2

Mathematics
2 answers:
Vladimir79 [104]2 years ago
8 0

Answer:

\pi \: {r}^{2}  = \pi \:  { \frac{d}{4} }^{2}

Plug the formula in to your calculator

lbvjy [14]2 years ago
6 0
The area of the circle would be 3.14
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A ladder is leaning against a tall wall with the foot of the ladder placed at 7 feet from the base of the wall and the angle of
djverab [1.8K]

Complete question is;

A 21 ft ladder is leaning against a tall wall with the foot of the ladder placed at 7 feet from the base of the wall and the angle of elevation is?

Answer:

θ = 70.5°

Step-by-step explanation:

The angle of elevation simply means the angle that the ladder makes with the ground. Let's call this angle θ.

I've attached a diagram showing the triangle made by this ladder and the wall.

From the attached diagram, we can see the triangle formed by the ladder and the wall.

We can find the angle of elevation θ from trigonometric ratios.

Thus;

7/21 = cos θ

cos θ = 0.3333

θ = cos^(-1) 0.3333

θ = 70.5°

7 0
3 years ago
Question 5 (2) x cube - 3x square 9x - 5
kakasveta [241]
Please, post the instructions along with your question, and if possible share the question in symbolic form, not in words.

Do you mean Question #5?  By  (2) x cube, do you mean 2x^3?

I strongly suggest that you use lots of parentheses (   ) to show how your numbers are grouped, and not to use " x " to denote multiplication (use " * " for that, please.    

If only you'll clear this up, I'd be happy to help.

I will assume that your post is   2x^3 - 3(9x-5)^2.

Then 2x^3 - 3(81x - 90x + 25).  Does this have any resemblance to what you wanted me to see in your post?

3 0
3 years ago
the student council wants to raise at least $500. Students must pay $2 to attend. How many student will need to attend in order
dezoksy [38]

Answer:

250 students at a minimum must attend to meet the student council goal.

Step-by-step explanation:

divide 500 by 2. you get 250 students that pay $2 each that equals $500.

6 0
3 years ago
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Answer:

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Step-by-step explanation:

8 0
2 years ago
Match the statement to symbols<br> a quarter of a number<br> 4/x<br> 4x<br> ox/4<br> 1/4+x
Reil [10]
A quarter of the number would be 1/4 +x
7 0
3 years ago
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