Using proportions, it is found that the better deal, on a per ounce basis, is given by:
- A a 30 oz. box of Tasty Wheats for $4.20
<h3>Proportion</h3>
- To find the better deal, we use <em>proportions </em>to find the cost per ounce, that is, dividing the cost per the amount of ounces. The <em>better deal </em>is the one with the smaller cost per ounce.
For each option, the costs per ounce are given by:
- A a 30 oz. box of Tasty Wheats for $4.20:
- B a 24 oz. box of Cherry Oats for $3.60
- C a 42 oz. Box of Giganto Flakes for $6.30
- D a 42 oz. Box of Giganto Flakes for $6.30
Due to the <em>smaller cost</em>, option A is the better deal.
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Answer:
a. Ratio of their circumference = 2:3
b. The ratio of their surface areas = 2:3
c. The ratio of their volume = 4:9
Step-by-step explanation:
Let the cylinders be labelled as A and B respectively.
Diameter of cylinder A = 6 in,
its radius =
= = 3 in
Diameter of cylinder B = 9 in,
its radius =
= = 4.5 in
Thus,
a. circumference of a circle = 2r
Circumference of cylinder A = 2r
= 2 x x 3
= 6 in
Circumference of cylinder B = 2r
= 2 x x 4.5
= 9
Ratio of their circumference =
=
= 2:3
b. The surface area of a cylinder = 2rh
the surface area of cylinder A = 2rh
= 6h
the surface area of cylinder B = 2rh
= 9h
The ratio of their surface areas =
=
= 2:3
c. Volume of a cylinder = h
volume of cylinder A = h
= x x h
= 9h
volume of cylinder b = h
= x x h
= 20.25h
The ratio of their volume =
=
= 4:9
Answer:
For a level of 0.0174 or more of nitrogen oxide, the probability of fleet is 0.01.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 0.02 g/mi
Standard Deviation, σ = 0.01 g/mi
Sample size, n = 81
We are given that the distribution of level of nitrogen oxides is a bell shaped distribution that is a normal distribution.
Standard error due to sampling:
Formula:
We have to find the value of x such that the probability is 0.01
P(X > x)
Calculation the value from standard normal z table, we have,
For a level of 0.0174 or more of nitrogen oxide, the probability of fleet is 0.01.
The slope of the line that passes through the points (-20,18) and (30,14) is
m (slope) = -2/25
Make an assumption . ''to assume''