Answer:
D. 28x + 14 + 3 = - 67
Step-by-step explanation:
Given 7 ( 4x + 2 ) + 3 = - 67
our first step would be to distribute the 7
7 * 4x = 28x
7 * 2 = 14
we would be left with 28x + 14 + 3 = -67 which corresponds with "D"
Answer:
3/4
Step-by-step explanation:
a1 = (-1/3)^0 = 1
r = -1/3
Hence S = 1/(1+1/3) = 1/(4/3) = 3/4
Answer:
a) 3/64 = 0.046 (4.6%)
b) 63/64 = 0.9843 (98.43%)
c) 1/64 = 0.015 (1.5%)
d) 1/4 = 0.25 (25%)
Step-by-step explanation:
in order to verify that the f(x) is a probability mass function , then it should comply the requirement that the sum of probabilities over the entire space of x is equal to 1. Then
∑f(x)*Δx = 1
if f(x)=(3/4)(1/4)^x , x = 0, 1, 2, ...
then Δx=1 and
∑f(x) = (3/4)∑(1/4)^x = (3/4)* [ 1/(1-1/4)] = (3/4)*(4/3) = 1
then f represents a probability mass function
a) P(X = 2)= f(x=2) = (3/4)(1/4)^2 = 3/64 = 0.046 (4.6%)
b) P(X ≤ 2) = ∑f(x) = f(x=0)+ f(x=1) + f(x=2) = (3/4) + (3/4)(1/4) + 3/64 = 63/64 = 0.9843 (98.43%)
c) P(X > 2)= 1- P(X ≤ 2) = 1 - 63/64 = 1/64 = 0.015 (1.5%)
d) P(X ≥ 1) = 1 - P(X < 1) = 1 - f(x=0) = 1- 3/4 = 1/4 = 0.25 (25%)
Step-by-step explanation:
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Answer:
Square root 9x + 7 + square root 2x = 7
Step-by-step explanation:
Square root 9x + 7 + square root 2x = 7, if i could put the square root symbol in I would.
Hope my answer has helped you and if not i'm sorry.
