3 hours = 180 minutes.
180 / 30 = 6
22 * 6 = 132
Koby can work about 132 maths problems in 3 hours.
I'm gonna try and call my mom when she get back from the hospital where
Answer:
31
Step-by-step explanation:
if sin(x) = cos(y)
then x + y = 90
.
in this case X + 59 = 90 : X = 31
L = 3w-4
W=w
If you want he length and width, you’ll need an area
Answer:
The confidence level for this case is 96% or 0.96, then the significance level would be:
And then 
. We need to find a critical value who accumulates 0.02 of the area on each tail and we got:
Step-by-step explanation:
The confidence level for this case is 96% or 0.96, then the significance level would be:
And then . We need to find a critical value who accumulates 0.02 of the area on each tail and we got:
