Cycled 480 meters but a<span>fter cycling 0.25 of the distance Wendy stopped and waited for Rick to catch up
0.25 (480) = 120 meters
</span><span>Wendy cycled at a speed of 80 meters per minute = 120 /80 = 1.5 minutes
</span><span>Rick's speed was 20 meters per minute slower than Wendy's = 120 / 60 = 2 minutes
so </span>2 minutes - 1.5 minutes = 0.5 minutes
answer
<span>Wendy waited 0.5 minutes for Rick </span>
Answer:
A chord is a segment whose endpoints are on a circle. ... A secant is a line that intersects a circle in two points.
Step-by-step explanation:
Answer:
Forest area burned by the fire is 256000 acres.
Step-by-step explanation:
Use the unitary method to calculate the area of National park burned in acres.
Since, 1 square mile = 640 Acres
Therefore, 400 square miles = 640 × 400
= 256000 acres
Hence, forest area burned by the fire is 256000 acres.
Answer: Reject if the confidence interval <u>does not</u> contain the value of the hypothesized mean .
Step-by-step explanation:
In the case of Confidence Intervals and Two-Tailed Hypothesis Tests,
Null hypothesis : [There is no change in mean.]
Alternative hypothesis: [There is some difference.]
Since confidence intervals contain the true population parameter ( mean).
So, Decision rule states that
- Reject if the confidence interval <u>does not </u>contain the value of the hypothesized mean .
- We do not reject if the confidence interval contains the value of the hypothesized mean .
Answer:
The combined average is 94%
Step-by-step explanation:
for first period, number of students =40
average =96%
for second period, no of students =20
average =90%
but
let =sum of students for the first period
=sum of students for the second period
for first period;
for second period,
therefore the combined average =
that is
so combined average is 94%