Aratati ca A=ab+ba-aa-bb este pătrat perfect DAU FUNDA PLZZZZ
1 answer:
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Answer:
The probability that it will weigh more than 904 grams = 0.9452
Step-by-step explanation:
Given -
Mean = 920 grams
Standard deviation =10
Let X be the weight of a certain brand of adult cereal
if we select one box of cereal at random from this population
The probability that it will weigh more than 904 grams =
=
= Putting
= Using Z table
= 1 - .0548
= 0.9452
Answer:
The measures of the acute angles are 38 and 52 degrees.
Step-by-step explanation:
In a right triangle, there are three angles, a right angle and two acute angles. In every traingle, the sum of the measures of the angles is 180 degrees. Let's call the acute angles and
.
The problem also says that one angle is twice the difference of the other angle and 12. That would look like this:
Now we have two equations. If we simplify them, we get these:
Now you can substitute in the first equation for
in the second equation
Add to both sides of the equation
Add to both sides
Divide both sides by 3
Now, you can substitute for
in the first equation and simplify.
Therefore,
, and
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