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3 years ago

How do the lateral and total surface area of a cylinder differ ?

1 answer:

8 0

The lateral surface area of a cylinder is just the long side connecting the bases, whereas the total surface area includes both the lateral surface area and area of the two circular bases.

$SA_l_a_t=2 \pi rh$ (Imagine a rectangle with the circumfrence of the base as one side and the height as the other being folded around)

$SA = 2 \pi rh + 2 \pi r^2$ (Plus the area of two circles)

The literal difference between surface areas would be the two bases 2πr² if you need that.

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Statistics... Help!

Leokris [45]

Answer:

a) 0.5233 = 52.33% probability of picking someone who has the disease.

b) 0.9091 = 90.91% probability of picking someone who tests negative, given that he/she did not have the disease

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

a) What is the probability of picking someone who has the disease.

132 + 25 = 157 people have the disease

132 + 25 + 13 + 130 = 300 people total

157/300 = 0.5233

0.5233 = 52.33% probability of picking someone who has the disease.

b) What is the probability of picking someone who tests negative, given that he/she did not have the disease?

143 people did not have the disease.

130 tested negative. So

130/143 = 0.9091

0.9091 = 90.91% probability of picking someone who tests negative, given that he/she did not have the disease

4 0

3 years ago

Brad buys two packages of mushrooms which mushrooms cost less per pound, $11.25 for 2/3 pounds and $7.99 for 1/2 pounds. Pls hel

Vsevolod [243]

Answer:

$7.99 for 1/2 pounds cost less per pound

Step-by-step explanation:

we know that

The unit rate is equal to divide the total cost by the total weight

step 1

Find out the unit rate of the first package

$11.25 for 2/3 pounds

The unit rate is

$11.25:\frac{2}{3}=\frac{33.75}{2}=\$16.875\ per\ pound$

step 2

Find out the unit rate of the first package

$7.99 for 1/2 pounds

The unit rate is

$7.99:\frac{1}{2}=\frac{15.98}{1}=\$15.98\ per\ pound$

therefore

The second package cost less per pound

6 0

4 years ago

The Coffee Counter charges $8 per pound for Kenyan French Roast coffee and $7 per pound for Sumatran coffee.

spayn [35]

Answer:

Kenyan French Roast coffee x=6

Sumatran coffee y=14

Step-by-step explanation:

x+y=20 blend coffee

8x+7y=7.3(20) selling price

x+y=20 ⇒ x=20-y

substitute in the equation:

8x+7y=7.3(20)

8(20-y)+7y=7.3(20) for 20 pound blend

160-8y+7y=146

-y=146-160

y=14 pond

x+y=20

x=20-14=6

check : 14*7+6(8)=146/7.3=20 pound

4 0

4 years ago

Which statements are true regarding the expression below? Check all that apply. 8 Superscript negative 1 Baseline times 8 Supers

Pepsi [2]

Options 2, 4, and 5.

(Edge 2020)

3 0

3 years ago

Read 2 more answers

The original price for a shirt is $30. It is on sale for 15% off. The sales tax is 8%. Round your

Serggg [28]

Answer:$27.54

Step-by-step explanation:30 times 0.15 = 4.5

30 - 4.5 = 25.5

25.5 times 0.08 = 2.04

25.5 + 2.04 = 27. 54

5 0

3 years ago