Step-by-step explanation:
lets radius be r and height be h,
r+h=21 -----(1)
curved surface area
2×pi×r×h=616 -----(2)
use simultaneous eqn to solve for r and h.
total surface area of cylinder= 2×pi×r×h + 2×pi×r²
= ans if im not wrong
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: 1 and 3/4 cupcake
Step-by-step explanation: 7divided by 4 = 1.75 or in fractional form 1 and 3/4 cupcakes.
The answer is b)35 because those angles are supplementary which means their sum is 180.
so 180+145 = 35
3.5ft(12in/ft)=42 inches
So all dimensions must be LESS than 42 inches...
Only choice C. satisfies this condition...
