Let the cost of the dryer = x
let the cost of the washer = y
x + y = 750
y = 2x
Substitute:
x + 2x = 750
3x = 750
x = 250
250 + y = 750
y = 500
Therefore, the cost of the washer is $500 and the cost of the dryer is $250! :)
I hope this helps you! :D
Answer: Angle bisector
The angle bisector is the line that cuts an angle in half. The three angle bisectors all intersect at the same point which is the incenter. The incenter is the center of the circle in which is largest possible, yet it's fully inside the triangle. No part of this circle is outside the triangle.
<span>Five feet tall or 5 feet tall or 60 inches. </span>
Answer:
d. The population standard deviation is known.
Step-by-step explanation:
T-distribution or Z-distribution, which to use?
If we have the population standard deviation is known, we use the z-distribution.
Otherwise, if we only have the standard deviation for the sample, we use the t-distribution.
Which of the following is not appropriate to use the t-confidence interval for
When the population standard deviation is known, so letter d.