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son4ous [18]
2 years ago
11

The area of a square floor on a scale drawing is 36 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:
Gennadij [26K]2 years ago
4 0

Answer:

36 answer

Step-by-step explanation:

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Show that <br>sinx/1+cosx=tanx/2​
hammer [34]

Answer:

See proof below

Step-by-step explanation:

show that

sinx/1+cosx=tanx/2​

From LHS

sinx/1+cosx

According to half angle

sinx = 2sinx/2 cosx/2

cosx = cos²x/2 - sin²x/2

cosx = cos²x/2 - (1- cos²x/2)

cosx = 2cos²x/2 - 1

cos x + 1 = 2cos²x/2

Substitute into the expression;

sinx/1+cosx

= (2sinx/2 cosx/2)/2cos²x/2

= sinx.2/cos x/2

Since tan x = sinx/cosx

Hence sinx/2/cos x/2 = tan x/2 (RHS)

This shows that sinx/1+cosx=tanx/2​

7 0
3 years ago
A rope with a length of 24 yards is cut into 7 pieces of equal length. Which is the correct way to show how to find how many yar
DerKrebs [107]

Answer:

3 1/3

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Marvin lives in Stormwind City and works as an engineer in the city of Ironforge. In the morning, he has 333 transportation opti
sukhopar [10]

The event "Atleast once" is the complement of event "None".

So, the probability that Marvin teleports atleast once per day will the compliment of probability that he does not teleports during the day. Therefore, first we need to find the probability that Marvin does not teleports during the day.

At Morning, the probability that Marvin does not teleport = 2/3

Likewise, the probability tha Marvin does not teleport during evening is also 2/3.

Since the two events are independent i.e. his choice during morning is not affecting his choice during the evening, the probability that he does not teleports during the day will be the product of both individual probabilities.

So, the probability that Marvin does not teleport during the day = \frac{2}{3}*\frac{2}{3}=\frac{4}{9}

Probability that Marvin teleports atleast once during the day = 1 - Probability that Marvin does not teleport during the day.

Probability that Marvin teleports atleast once during the day = 1-\frac{4}{9}=\frac{5}{9}

5 0
3 years ago
When evaluating proportions, we write the ratios in fractional form and then we ________________.
soldi70 [24.7K]
Set the cross products equal
3 0
3 years ago
How to find the area of a equilateral triangle that has a perimeter of 21?
Romashka-Z-Leto [24]
First, we have to find the length of each side of triangle. Equilateral triangle means 3 sides r in same length, so each side will be 21 ÷ 3 = 7
Now we need to calculate the height of the triangle. We can do this by Pythagoras theorem
Let the height be h
(7/2)^2 + x^2 = 7^2
The area should be 6.0621778265
Or u can say 6.06 corrected to 3 sig fig
8 0
3 years ago
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