The marks obtained by students of a class in a test are normally distributed with a mean of 60 marks and a standard deviation of 5 marks.

About what percent of students have scored less than 45 marks?
a.
0.5
c.
15.5
b.
2.5
d.
34

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40

the answer is d

for problems like this theres an app, its photomath that explains the problem and gives the answer hope i

whaere is the picture

step-by-step explanation: