Answer:
B. stratified.
Step-by-step explanation:
If a population is composed by identifiable groups or strata, with large variations between groups, the stratified sampling should be applied in order to comprehend and represent all of the different groups in the sampling process.
Therefore, the answer is alternative B. stratified.
Answer:
3.5 cm
Step-by-step explanation:
Given the question:
A circular arc has measure 8 cm and is intercepted by a central angle of 2.3 radians. Find the radius of the circle. Do not round any intermediate computations, and round your answer to the nearest tenth.
Central angle in radian (θ) = 2.3 radian
Length of arc (s) = 8cm
Recall:
Length of arc (s) = radius (r) × central angle (θ)
8cm = radius × 2.3 rad
radius = 8 / 2.3
Radius = 3.478 cm
Radius = 3.5 cm
Use combine like terms the answer is 7r^2-r-1
hello
8 the no right answer to 2(4x - 6) = 6x - 4
because : 2(4(8)-6) = 6(8)-4
2(26) = 48-4
52 =44
Hello!
The volume of a cone is found by using the formula: V = 1/3πr²h.
Figure 1 --
From figure one, it shows us the radius, which has a length of 8 centimeters, and the height, which is 14 centimeters. With that values, we can substitute those values into the formula and solve.
V = 1/3π(8)²(14)
V = 1/3(64)(14)π
V = 64/3(14)π
V = 896/3π centimeters³, 938.29 centimeters³ (multiplied by π), and 937.81 centimeters³ (multiplied by 3.14).
Therefore, the volume of the first cone is 938.29 centimeters³.
Figure 2 --
From the second figure, the height of the cone is 19.6 and the diameter is 12. To find the radius, divide the radius by 2, which is will give the radius.
V = 1/3π(6)²(19.6)
V = 1/3(36)(19.6)π
V = 12(19.6)π
V = 235.2π, 738.53 (multiplied by 3.14), 738.90 (multiplied by π)
Therefore, the volume of the second cone is 738.90 units³.
