A(b-c) + 4 = e
take 4 to other side
A(b-c) = e-4
now divide both sides by (b-c)
A = (e-4)/(b-c)
Mark brainliest
[(105 - 84) / 84] × 100 =
= [(21) / 84] × 100 =
= 0.25 × 100 = <u>25%</u>
Answer:
x = 7, x = -3
Step-by-step explanation:
We can find the zeros by factoring the equation using the zero product property.
x^2-4x-21 = 0
(x-7)(x+3) = 0
<u>x-7 = 0</u>
x = 7
<u>x+3 = 0</u>
x = -3
Zeros are x=7 and x= -3.
Answer:
1. c. Convenience Simple
2.d. Random Systematic
3.b. Cluster Stratified
4. a. Sampling Method
Step-by-step explanation:
Each sampling method is different and requires a different approach.
For example, a sample of many people will be a simple sample
However, let's consider this scenario: Pulling 50 names from the hat.
This is a random sample as each name has an equal probaibility of being chosen from the list.