Answer:
33 Students
Step-by-step explanation:
4:7 => 4+7 = 11 < 24 not enough
8:14 => 8+14 = 22 < 24 not enough
16:28 => 16+28 = 44 > 40 alot more
12:21 => 12+21 = 33
24 < 33 < 40
Answer:
C: 1 over 7 to the 2nd power
Step-by-step explanation:
The question is: 
When multiplying exponents, the base stays the same, while the power is added. In this question, the powers are 3 and -5.

The exponent will become: 
Since the power is negative, it is improper. The negative can be removed by moving the power down and making it a fraction over 1.

The answer is
, also written as "1 over 7 to the 2nd power".
Answer:
b = 0
Step-by-step explanation:
Since,the equations y=3/4x+1 and y=1/2x+b intersect at (4,2)
So, plug x = 4 and y = 2 in equation y=1/2x+b, we find:

The product of the -72 could be set up at -72=-9(x).
Divide -9 from both sides and you get the unknown value (x) to be 8
1. 3(p+q)=p
3p+3q=p; 3p-p=3q; 2p=q so p=q/2
2. 4a=2b-7
2b=4a+7 so b=(4a+7)/2
when a=3 , b=(12+7)/2=19/2=9.5
3. d=rt; r=d/t
4.( 2x15)+(2xwidth)=90
2x width=90-30
width =60/2=30