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andrezito [222]
3 years ago
15

The area of a square floor on a scale drawing is 81 square centimeters, and the scale drawing is 1 centimeter:3 ft. What is the

area of the actual floor? What is the ratio of the area in the drawing to the actual area?
Mathematics
1 answer:
omeli [17]3 years ago
7 0
You do 81 divided by 3 and you get 27 so the answer is 27 ft
Hope this helped!
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What is the value of x to the nearest tenth tan 64 degrees = x/7
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Tan64°=x/4⇒x=14.35≈14.4
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3 years ago
A bag contains three white marbles, two black marbles, and five red marbles. Find the probability of picking a black marble.
Sveta_85 [38]
Hope this helps you!

3 0
3 years ago
-4^2-17
Irina18 [472]

Answer:

Step-by-step explanation:

-4 is really  -1 * 4

-4² = -1 * 4²

-4² = -1 * 16

-4² = -16

Use parenthesis  to square

(-1 * 4)² = (-4)²

(-4)² = 16

5 0
3 years ago
What numbers go in the sqaures?
givi [52]

On the first two pairs you need to write 3 and 4, and 6 and 2.

On the second page we have:

1) 4

2) 2 and 7

3) 1

4) 1 and 3

5) 3.

<h3>What numbers go in the squares?</h3>

a) Here we just need to use scientific notation.

For the first case, the numbers that go in the exponent boxes are the same ones that go in the example, which are 4 in the first one and 2 on the second one.

Then, if we want the difference to be 29,400, then we can use 3 on the first box and 6 on the second. OR, because this is an absolute value, we can just invert those.

This is:

6 and 2 on the first two squares, and 3 and 4 on the second two squares.

b) Here we want to make perfect squares.

For example, on the first case we have:

x*2*2

We need to find the value of x such that this is a perfect square. Notice that we can rewrite this as:

x*2*2 = x*4

Then it only is a perfect square if x = 4.

For the second case:

14*x*y

This is only a perfect square if x*y = 14

Then we can use x = 2 and y = 7.

With similar reasoning, on the next box we have:

2*8*x

2*8 = 16, is already a perfect square, so x = 1.

The next one is:

x*3*y

Here we can define x = 3 and y = 1, so we get a perfect square.

Finally:

3*x

Here the only possible value of x is 3.

If you want to learn more about perfect squares:

brainly.com/question/1538726

#SPJ1

5 0
2 years ago
Round your answer to the nearest hundredth.
choli [55]

Answer:

9

Step-by-step explanation:

I used tan but there's probably an easier way to do this but 4*tan(20)=8.94 then round it up to 9

8 0
2 years ago
Read 2 more answers
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