Answer:
The number of hardback books in book sale = 58
Step-by-step explanation:
Let the number of hardback books = m
So, the number of paperback books = 3 ( number of Hardbacks) - 12
= 3 m - 12
⇒the number of paperback books = 3 m -12
Now, total number of paperback books = 162
⇒ (3m -12) = 162
or, 3m = 162 + 12
or, 3m = 174 ⇒ m = 174 / 3
or, m = 58
Hence, the number of hardback books = 58
Answer:
56.4°
Step-by-step explanation:
Let θ = the angle of elevation. Then
tanθ = 199/132 = 1.508
θ = arctan1.508
θ = 56.4°
The angle of elevation is 56.4°.
The answer is -8 because -4x2 is -8
Answer:

Step-by-step explanation:
Given
5 tuples implies that:

implies that:

Required
How many 5-tuples of integers
are there such that
From the question, the order of the integers h, i, j, k and m does not matter. This implies that, we make use of combination to solve this problem.
Also considering that repetition is allowed: This implies that, a number can be repeated in more than 1 location
So, there are n + 4 items to make selection from
The selection becomes:



Expand the numerator




<u><em>Solved</em></u>
Answer:
x=0 y=3
Step-by-step explanation: