Answer:
+2
Step-by-step explanation:
red is up scaled by *2 dilation
Answer:
He can make <u>128</u> one third pound of hamburgers using all the ground beef.
Step-by-step explanation:
Given:
Jon is making hamburgers for a church lunch. He has 42 and two thirds lbs of ground beef.
Now, to find the number of one third pound hamburgers can he make using all the ground beef.
Pound of ground beef he has =
Pound of hamburgers he can make = .
Now, to get the number of hamburgers he can make by using all the ground beef we divide the quantity of ground beef by :
<em>As, the division changes into multiplication one of the fraction get reciprocals.</em>
<em><u>Thus, 128 hamburgers he can make.</u></em>
Therefore, he can make 128 one third pound of hamburgers using all the ground beef.
Answer:
P (z for -2.23) is -0.9871
Step-by-step explanation:
Given data
mean life x = 753 hours
sample n = 28
mean y = 726
standard deviation SD = 64 hours
to find out
check to have enough evidence to reject his claim
solution
we know that given mean is x ≥ 753
we found mean = 726
so difference = y - x = 726 - 753 = -27
and we know σ = SD/√n = 64 / √28 = 12.094896
Z = y - x / σ
Z = -27 / 12.09
Z = -2.23
so probability value
P (z for -2.23) is -0.9871
so z value is less than alpha = 0.05
so reject
so this is enough evidence to reject his claim
The mean of their scores is their sum divided by the number of scores.
.. (84 +67 +74 +87 +67 +73)/6 = 452/6 ≈ 75.3