Answer:
x = 20
p =54
y= 54
Step-by-step explanation:
2x-4 = 96-3x
5x = 100
x = 20
2x-4 = 40-4 = 36
(180 - (36 x 2))/2
(180-72)/2
108/2
p = y =54
Answer:
<em>m = - 2</em>
Step-by-step explanation:
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m =
Answer:
Step-by-step explanation:
Given that the time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes.
P(completing exam before 1 hour)
= P(less than an hour) = P(X<60)
=P(Z<
)
=0.5-0.34=0.16
i.e. 16% of students completed the standardized exam.
Set up a ratio:
240/180 = X/36
Cross multiply:
240 * 36 = 180x
8640 = 180x
Divide both sides by 180:
X = 8640 / 180 = 48
The person would weigh 48 pounds.