Answer:
The current temperature = 34.2°C
Step-by-step explanation:
Initial temperature = 46.8°C
After 20 minutes temperature reduced by 12.6°C
Therefore, the current temperature is = 46.8°C - 12.6°C = 34.2°C
Answer:
1. 28
2. b = 7.06
2. c = 3.76
Step-by-step explanation:
1. m < C = 90 - B = 90 - 62 = 28 degrees
2. sin B = opposite/hypotenuse
sin (62o) = b/8
b = 8 x sin (62o) = 8 x 0.883 = 7.06
3. sin C = opposite/hypotenuse
sin (28o) = c/8
c = 8 x sin (28o) = 8 x 0.4695 = 3.76
Answer:
Step-by-step explanation:
You need to simplify
Given:
Principal value = $1200
Rate of interest = 3% per year
To find:
The interest earned by Jenny in one year.
Solution:
Formula of interest:

Where, P is principal, r is rate of interest and t is time.
We have, P = 1200, r = 3, t=1. Putting these values, we get



The interest earned by Jenny in one year is $36.
Therefore, the correct option is A.