LOTS OF POINTS, WILL GIVE BRAINLIEST!!!
2 answers:
- ➡30 is correct answer
- ➡option b is correct
➡90° +(x+x+x)= 180°
➡90° + 3x = 180°
➡3x= 180°-90°
➡3x= 90°
➡x = 90°/3= 30°
<h2>➡x= 30°</h2><h3>then in triangle sum of all angles = 180°</h3>➡90°+x+y = 180°
➡90°+ 30° +y = 180°
➡120+y = 180°
➡y= 180°-120°
<h3>y = 60</h3>- now to find y-x = 60°-30°=30
➡30 is correct answer
➡option b is correct
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Answer:
Step-by-step explanation:
To find this probability, we shall be using the z-score route
Mathematically ;
z-score = (x -mean)/SD
From the question, x = 1.99, mean = 0 and SD = 1
So z = (1.99-0)/1 = 1.99
So the probability we want to calculate is;
P(z<1.99)
This value can be obtained from the standard normal distribution table.
P(z < 1.99) = 0.9767
The sketch of the region is as shown as in the attachment.
