Answer:
15
Step-by-step explanation:
Answer:
-5/6 = x
Step-by-step explanation:
divide -12 from each side. this should leave you with x = 10/-12. if you simplify this, you should get -5/6
Answer:
Step-by-step explanation:
The confidence interval for population mean is given by :-
Given : Sample size :
Sample mean :
Standard deviation :
Significance level :
Critical value :
Now, the 99% confidence interval for the mean percent body fat in all men aged 20 to 29 will be :-
Answer:
5 seconds
Step-by-step explanation:
When the ball returns to its original height, it will be 96 ft from the ground. That means we want to solve for t ...
h(t) = 96
96 +80t -16t^2 = 96
16t(5 -t) = 0 . . . . subtract 96 and factor
This equation is true for t=0 and for t=5.
After 5 seconds, the ball will pass the top of the building on the way down.
Answer:
x= 3
Step-by-step explanation:
∠RTS +∠RST= ∠QRT (ext. ∠ of △RST)
(25x)° +(57 +x)°= (45x)°
25x° +x° +57°= 45x°
26x° +57°= 45x°
45x° -26x°= 57°
19x°= 57°
x°= 57° ÷19
x°= 3°
∴ x= 3
Alternatively, find the measure of the angle RST using ∠ sum of triangle then find ∠QRT using adjacent angles on a straight line. Equate this value to 45x and solve for x.