Answer:
C
Step-by-step explanation:
Rosa: 500/25 = 20
Fatima: 600/30 = 20
therefore the answer is C because the both earned the same amount
36 and 144
Explanation
Two Angles are Supplementary when they add up to 180 degrees
Step 1
Let
x= angle 1
y= angle2
The measure of one angle is four times the measure of the other angle,then
x and y are supplementary angles , then
Step 2
use Equation (1) and (2) to find x and y
replace Equation (1) in Equation (2)
replace the value of y= 36 in equation (1) to find x
Hence, the answer is 36 and 144
Answer:
x = 2
Step-by-step explanation:
Step 1: Subtract 2x from both sides.
4x+14−2x=2x+18−2x
2x+14=18
Step 2: Subtract 14 from both sides.
2x+14−14=18−14
2x=4
Step 3: Divide both sides by 2.
2x
2
=
4
2
x=2
:)
:)
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Hope this helps!
Answer:
The standard error of the mean is 10.11 points
Step-by-step explanation:
Standard error of mean = t×sd/√n
sd = 115 points, n = 500, degree of freedom = n-1 = 500-1 = 499, assuming a 95% confidence level, t-value corresponding to 499 degrees of freedom and 95% confidence level is 1.96501
Standard error of mean = 1.96501×115/√500 = 10.11 points (to the nearest 100th)
