Pentagon is a five-sided polygon.The sum of interior angles of a pentagon is 540 degrees. A regular pentagon can be subdivided into 5 triangles. The triangles formed are equilateral triangle, when you get the area of each triangle and multiply it by 5 you will get the area of the polygon.The answer is True
Answer:
Step-by-step explanation:
a) perimeter = 8x + 3 + 5 + 7x + 4
b) perimeter = 15x + 12
Answer:
- <u>There are six pairs in the sample space.</u>
Explanation:
The only question shown is <em>a) Determine the number of sample points in the sample space.</em>
The box contains three cards. They are each marked. The representations of the marks are the letters Q, P and M. Thus, the cards are marked:
- one with a Q,
- other with a P, and
- other with an M.
Two cards are to be selected at random with replacement. Thus, the possibilities are:
First card, second card
Q P
Q M
P Q
P M
M Q
M P
Therefore, the sample space contains 6 pairs (points): QP, QM, PQ, PM, MQ, MP.
Answer:
x ≥ 8
(x = 8, 9, or 10)
Step-by-step explanation:
mean = [sum of terms]/[number of terms]
7.5 ≤ (8 + 7 + 5 + 9 + 10 + 7 + 6 + x)/8
7.5 ≤ (52 + x)/8
60 ≤ (52 + x)
8 ≤ x OR
x ≥ 8 OR
x = 8, 9, or 10
Step-by-step explanation:
Take n common
n(n²+2n-15)=0
now factorise the quadratic one as n when goes to RHS it becomes zero
n²-3n+5n-15=0
n(n-3)+5(n-3)=0
n=3,-5