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3 years ago

I need to know the surface area of both 1 and 2 please

Mathematics

1 answer:

sergey [27]3 years ago

3 0

Answer:

1. 142 in.²

2. 190 cm²

Step-by-step explanation:

Both solids are rectangular prisms.

Surface area of a rectangular prism = 2(LW + LH + HW)

1. L = 7 in.

W = 3 in.

H = 5 in.

Plug ok the values into the formula

Surface area = 2(7*3 + 7*5 + 5*3)

= 142 in.²

2. L = 10 cm

W = 3 cm

H = 5 cm

Plug ok the values into the formula

Surface area = 2(10*3 + 10*5 + 5*3)

= 190 cm²

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Answer:

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Step-by-step explanation:

GIVEN: Suppose that in a certain county $37\%$ of voters are registered as Democrats, $29\%$ as Republicans, $7\%$ as Green party, and the rest are considered Independents. You conduct a poll by calling registered voters in the county at random.

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Lets total population of county be $100x$ .

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Probability that first call will be to Republican $P(B)=\frac{\text{total republicans}}{\text{total voters}}$

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probability that the first call will be to either a Democrat or a Republican

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Hence the probability that the first call will be to either a Democrat or a Republican is $0.66$

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