Answer:
Option (3)
Step-by-step explanation:
By applying cosine rule in the triangle ABC,
BC² = AC² + AB² - 2(AC)(AB)cosA
5² = 3² + 7²- 2(3)(7)cosA
25 = 9 + 49 - 42cos(A)
25 = 58 - 42cos(A)
cos(A) =
A =
A = 38.21°
A ≈ 38°
Option (3) will be the correct option.
Answer:
1920 k calories is the basal metabolism.
Step-by-step explanation:
Formula to get the total basal metabolism has been given by the formula
R(t) =
Where t = time
Now to calculate the total basal metabolism we will integrate the function with respect to time from 0 to 24 hours.
=
=
= [(80-0)24-(sin2\pi - sin0)]
= 80×24
= 1920 k calories
Therefore, 1920 k calories is the total basal metabolism of the young man.
First of all you need to push the restrictions for x so x not can being never equal 4 and -7 because than these denominators will be equal zero and these fractions undefined
1/(x-4) = 2/(x+7) cross multiple and will get
x+7 = 2(x-4)
x+7=2x-8
x = 15
hope this helped
Answer:
Step-by-step explanation:
Janelle expanded the expression as shown below. -4(-3x + 2/7) = -12x - 3 5/7 What errors did she make?
We are given the expression:
-4(-3x + 2/7)
Solving this expression:
Expanding the brackets
-4 × -3x + -4 × 2/7
12x - 8/7
12x - 1 1/7
Answer:
weather forecasting, health insurances
Step-by-step explanation:
probability is used by weather forecasters to assess how likely it is that there will be rain, snow, clouds, storms, etc. on a given day in a certain area. health insurance also uses statistics and probability to determine how likely it is that certain people will spend a certain amount on healthcare each year.