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gladu [14]
3 years ago
7

T(t)T, models the daily high temperature (in Celsius) in Santiago, Chile, t days after the hottest day of the year. Here, t is e

ntered in radians.
T(t)=7.5cos(2π/365t)+21.5


What is the second time after the hottest day of the year that the daily high temperature is 20 degrees celsius?


Round your final answer to the nearest whole day.
Mathematics
1 answer:
erma4kov [3.2K]3 years ago
8 0

Answer:

the answer is 262 days

Step-by-step explanation:

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Michael’s haircut was 14.00 he gave a tip of 3.50 what percentage did Michael leave as a tip
Maurinko [17]

Answer:

D. 25%

Step-by-step explanation:

There are two ways that I do this. Both of them are probably not what your teacher tells you, but hey, I got the right answer.

The first method is to go through the answers and do 14 x .10, 14 x .20, and so on until you get 3.50.

The second method is to do 14/3.5, which equals 4. This means 14 can be broken up into 3.50 four times. So, 3.50 is 1/4 of 14. What is 1/4 of 100%? 25%.

3 0
3 years ago
Find the area of a circle with radius, <br> r<br> = 40cm.<br> Give your answer rounded to 3 SF
Serjik [45]
Area of circle = pi x r^2
= 22/7 x 40^2
= 5028.57
= 5030cm^2 (3 SF)
6 0
3 years ago
Z^2 - x; use x = 1, and z = 3
elena55 [62]

Answer:

8

Step-by-step explanation:

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6 0
2 years ago
PLEASE HELP ME!! FIND THE VOLUME OF X
sineoko [7]

Answer:

x = 6

Step-by-step explanation:

So thee cube is just x^3

The cube root of 216 is 6

7 0
3 years ago
Please answer this correctly
aleksklad [387]

Answer:

63.2 = y

Step-by-step explanation:

The perimeter is the sum of all the sides

P = 7.8+ y+37.6 + y

171.8 = 7.8+ y+37.6 + y

Combine like terms

171.8 = 45.4 + 2y

Subtract 45.4 from both sides

171.8-45.4 = 45.4 + 2y -45.4

126.4 = 2y

Divide each side by 2

126.4/2 = 2y/2

63.2 = y

6 0
3 years ago
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