Answer:
Step-by-step explanation:
Sum of all the angles of a triangle = 180°
∠A + ∠B + ∠C = 180°
48 + ∠B + 56 = 180
∠B + 104 = 180
∠B = 180 - 104
∠B = 76°
Think about it. If you have a pie and cut it into three pieces, and you have another pie and cut it into 4 pieces. If you took 2 of the three pieces of the first pie, and 3 of the pieces of the second pie, which would have more pie?
(If you still don't get it, the answer is 3/4)
Answer:
The answer to your question is: y = 7
Step-by-step explanation:
Find y when x = -5
-3x – 3y = -6
-3(-5) - 3y = -6
15 - 3y = -6
- 3y = -6 - 15
-3y = -21
y = -21/-3
y = 7
The proportion of people with IQs above 130 is 2.3%.
<h3>How to calculate the value?</h3>
Normal distribution, is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.
Here the mean is 100 and a standard deviation of 15.
µ = 100, σ = 15
P(X > 130) =
= P( (X-µ)/σ > (130-100)/15)
= P(z > 2)
= 1 - P(z < 2)
Using excel function:
= 1 - NORM.S.DIST(2, 1)
= 0.023 = 2.3%
The value is 2.3%.
Learn more about proportion on:
brainly.com/question/19994681
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