Answer:
x=12
Step-by-step explanation:
Since it is on a right angle we can equate the sum of these 2 angles to 90:
3x+x+42=90
Simplify:
4x+42=90
Subtract 42 from both sides:
4x+42-42=90-42
Simplify:
4x=48
Divide both sides by 4
4x÷4=48÷4
Simplify
x=12
Answer:
Proved
Step-by-step explanation:
Given
Integers: a and b
Where
Required
Show that
We start by writing out the given expression
Then, take nth root of both sides
For instance:
Let a = 2, b = 2 and n = 4
First
Since
Then
Proved
<em>This is so for all positive values of a,b and n where a < b</em>
Answer:
<h2>-0.6(3x + 7) = -1.8x - 4.2</h2>
Step-by-step explanation:
Answer:(x-1)(x+8)
Step-by-step explanation: You need to set it up as (x+y)(x+z) format. To get that you need to flip the zeroes making them the opposite. So the answer in this case would be (x-1)(x+8).
Answer:
e. two-sample z-test for two proportions
Step-by-step explanation:
He has two machines, which have a proportion of defective motherboards. He want to compare this two proportions.
He takes two samples, one for each machine, and calculate the proportion in order to statistically test if there are significant difference between the proportions.
Then, this is a two-sample z-test for two proportions