75,76,77,78,79,80,81,82,83,84
We know that
the length of a circumference=2*pi*r
for D1=18 cm--------------> r1=9cm
L1=2pi*9-------> 18pi cm
for D2=6 cm-----------> r2=3 cm
L2=2pi*3-------> 6pi cm
L2/L1----------> (6pi)/(18pi)---->1/3
the answer is the option A) multiplies by 1/3
Answer: There is a 90% chance that the error range will be with in 3.29 ft² .
Step-by-step explanation:
Given : The area of a parking lot is calculated to be 5,474 ft² .
Estimated standard deviation = 2 ft²
The critical z-value for 90% confidence interval is 1.645 (from z-table)
Then, the Maximum Anticipated Error = ( critical z-value ) x ( standard deviation )
= 1.645 (2) =3.29 ft²
i.e. Maximum Anticipated Error = 3.29 ft²
Hence, there is a 90% chance that the error range will be with in 3.29 ft² .
Answer:
supplementary
Step-by-step explanation:
∠ 1 and ∠ 2 are adjacent angles and supplementary.
Answer:
x = - 4
Step-by-step explanation:
-3(x+2)=6+2x+8
-3x - 6 = 14 + 2x (-3 * 2 = -6)
-3x -2x = 14 + 6
-5x = 20
x = 20/ -5
x = -4
