Answer:
1.D
2.c
Step-by-step explanation:
f(m/4)=8(m²/16)-4(m/4)
=m²/2-m
f(-4)=-3(-4)²+5(-4)
=-3(16)-20
=-48-20
=-68
Answer:
The distance between the parallel sides is 20cm.
Step-by-step explanation:
Area of a trapezoid:

where a and b are the 2 bases, and h is the height. The value we're trying to find here is the height.
3 of the 4 variables in this equation are already given:
A = 800
a = 48
b = 32
Just plug those in and solve for h:

Answer:
The probability is 1/17.
Step-by-step explanation:
The total number of ways in which 2 cards can be selected from a pack of 52 cards is 
The total number of combinations of 2 cards with hearts equals 
Thus the probability of the event that both the cards have hearts becomes

Answer:
6y+4
Step-by-step explanation:
-(2x-3y) +5x +2 -3x +3y +2
(-2x -3x +5x) (3y +3y) (2 +2)
0 +6y +4
6y +4