Answer:
480
Step-by-step explanation:
if you are descending 8 feet per second for one minute, you have to multiply 8 by 60 and that gives you 480. Hope it helps!
Answer:
(0.0706, 0.1294)
Step-by-step explanation:
Confidence interval of a proportion is:
CI = p ± CV × SE
where p is the proportion,
CV is the critical value (z score or t score),
and SE is the standard error.
The sample is large enough to estimate as normal. For 95% confidence level, CV = z = 1.96.
Standard error for a proportion is:
SE = √(pq/n)
SE = √(0.1 × 0.9 / 400)
SE = 0.015
The confidence interval is:
CI = 0.1 ± (1.96)(0.015)
CI = (0.0706, 0.1294)
Round as needed.
Answer:
51
Step-by-step explanation:
17+15+11+8=51
Answer:
y=-1/2x+b
Step-by-step explanation:
we can see that the line is going through (0,9) and the closest point is goes through next is (1,7).
so knowing that y=mx+b, we can plug in numbers to this equation.
take on of the points, and find the slope. the slope is -1/2.
so we would plug in one of our points plus the slope into our equation:
7=-1/2(1) +b
now we do the algebra and find that 7 1/2 =b.
so now the equation is y=-1/2x+b.
