Answer:
1/15
Step-by-step explanation:
Probability of 1st selection being blue = 3/10
Probability of 2nd selection being blue (if the 1st blue is not replaced) = 2/9
multiply: 3/10 x 2/9 = 1/15
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Answer:
10.3 %
<u>Skills needed: Markup </u>
Step-by-step explanation:
1) There is a formula for mark-up that allows one to directly solve for the percentage, and it will be broken down below.
---> Markup is the percent increase for a product or service.
---> It finds out how much percent a product has increased in price from the original price.
---> There are certain markup percentages used by stores to determine the price of a new product or a product very high in demand.
2) The formula mark-up, which is the percent raise in the product price is as shown below:
![M=\frac{C_n-C_o}{C_o}*100](https://tex.z-dn.net/?f=M%3D%5Cfrac%7BC_n-C_o%7D%7BC_o%7D%2A100)
is the new (usually increased) cost
is the original cost
is markup (as a %)
(The 100 is there to convert the decimal answer into a percent).
3) We can use this for this problem, as the original price (Which is last year's price) is 145, and the new price is 160:
![M=\frac{160-145}{145}*100 \\ M=\frac{15}{145}*100 \\ M = 0.1034*100 \\ M=10.34\%](https://tex.z-dn.net/?f=M%3D%5Cfrac%7B160-145%7D%7B145%7D%2A100%20%5C%5C%20M%3D%5Cfrac%7B15%7D%7B145%7D%2A100%20%5C%5C%20M%20%3D%200.1034%2A100%20%5C%5C%20M%3D10.34%5C%25)
(Note: I rounded 15 divided by 145 to the nearest ten-thousandths place as that is the amount of decimal places needed).
10.34% rounds to 10.3% when rounded to the nearest tenth (as stated).
Answer:
Volume: 16.76 cm^3
Surface area: 40.67 cm^2
Step-by-step explanation:
To find volume, you use the formula V=πr^2*h/3
To find the surface area you use formula A=πr(r+√h^2+r^2)