The class average on a math test was an 82 with a standard deviation of 5. if the data is normally distributed, which statements are true?:

- about 68% of the students scored below an 87.
- a student scoring a 74 would have a z-score of -1.6
-a z-score of 2.6 would be A 95
- about 25% of the class scored above a 92
-about 16% of the class scored a 77 or below

idk the answer but just put a

step-by-step explanation:

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation:

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral