Answer:
281
Step-by-step explanation:
12*4 rectangle 2 times because theres 2 of the same surfaces
5*4 rectangle 2 times
12*5 rectangle on the bottom surface 1 time
4 triangle surfaces of (5*5)/2
7*5 rectangle on top
add and you get 281
Answer:
C. (n₁ + n₂ - 2) degrees of freedom
Step-by-step explanation:
The t-test for difference between two mean when variance are equal is:
where ,
= Mean of Sample 1
= Mean of Sample 2
s = standard deviation
n_1 = size of Sample 1
n_2 = size of Sample 2
and t is Student's t-test with (n₁ + n₂ - 2) degrees of freedom.
Answer:
Stop cheating
Step-by-step explanation:
Actually learn stuff
Square root of <span>4,840,000 is 2,200
</span>2,200 is the length of all sides
72 + x = 2(81)
multiply 2(81)
72 + x = 162
subtract 72 from both sides
x = 90
He would need to score 90% on his next test.