Answer:
9.4
Step-by-step explanation:
X + 2.3 = 11.7
Subtract 2.3 from both sides
X = 9.4
30%. You want to add up all the muffins (which is 40) and make that your denominator. then as the numerator you make it as many blueberry muffins Anna has. (which is 12) you divide 12÷40×100. and that gives you a percent of 30.
The answer is B. Multiply both sides of the top equation by 2.
This is because if you multiply 3x by 2, you get 6x, and 6x is in the other equation, which makes the x-values equal
The equation for a cone is
V=(1/3)hpir^2
if pi=aprox 3.14 for this quesiton
and r=6 and h=13
V=(1/3)(13)(3.14)(6^2)
V=(1/3)(13)(3.14)(36)
V=(13)(3.14)(12)
V=(3.14)(156)
V=489.84 cubic units
Answer:
b. 0.055
Step-by-step explanation:
The point estimate of the proportion of people who wear hearing aids is
The number of people in the sample who wear hearing aids divided by the total number of people in the sample.
In this problem, we have that:
Sample of 855.
47 people in the sample had hearing aids.
47/855 = 0.0549
Rounding up
0.055
So the correct answer is:
b. 0.055
