Expand the expression?
Perform indicated multiplication:
7a(2a)+7a(-5)-4(2a)-4(-5)
14a^2-35a-8a+20 combine like terms, ie (-35a-8a)=-43a
14a^2-43a+20
X = total amount of people
80% of x = 540
.8x = 540
x = 675
There were 675 people
A.
Faces - 8
Lateral Faces - 6
B.
Vertices - 12
C.
Edges - 18
D.
The base of the prism is a hexagon and the figure as a whole is a hexagonal prism.
Answer: 2.28%
Step-by-step explanation:
μ = 71.8
σ = 3.4
X < 65
P(X < 65) = P (Z < 65 - 71.8/3.4) = P (Z < -2)
According to the table for the normal distribution attached, it will give us
P (z < Z < 0), this way, to find the P(Z < z), we need to do 0.5 - P:
0.5 - P(-2 < Z < 0) = 0.5 - 0.4772 = 0.0228
In percentage: 0.0228*100 = 2.28%
Opposite angles
Opposite angles are non-adjacent angles that are formed by two intersecting lines. They are congruent.
