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True [87]
3 years ago
11

I will mark Brainliest :) Industrial chemicals are stored in 55-gallon drums. The radius of the drum is 12 inches, and the heigh

t is 32 inches. What is the surface area of the drum?
Mathematics
1 answer:
Alenkasestr [34]3 years ago
5 0

Answer:

The surface area is 3317.52 inch^2

Step-by-step explanation:

The drum is in the shape of a cylinder, therefore..

Area of the drum

=2πrh+2πr^2

=2*π*12*32+2·π*12^2  

= 3317.52 inch^2

Please mark brainliest!

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Convert 5 over 8 to a decimal and tell whether it terminates or repeats.
AURORKA [14]

Answer: The answer is D. .625

Step-by-step explanation: It terminates, meaning that it doesn't repeat itself

7 0
3 years ago
Please help- A car travels 600ft in 20 seconds. A motorcycle travels 300ft in 12 seconds. Which is faster, the car or the motorc
Lesechka [4]

Answer:

The Car.

Step-by-step explanation:

We need to find the unit rate for each vehicle to figure out who is traveling faster or slower.

Car: 600/20 = 30 ft per second

Motorcycle: 300/12 = 25 ft per second

So, the Car is faster

7 0
2 years ago
Read 2 more answers
Use the formula S A = 6s2 , where S A is the surface and s is the edge length of the cube , to solve his problem.
Gennadij [26K]
To find the surface area of the cube using the formula, you would substitute in 2 1/2 for the length of the side.

SA = 6 x 2.5 x 2.5
SA = 37.5 ft.²

You are finding the area of one face (2.5 x 2.5) and multiplying it by six because there are six groups of this.
4 0
3 years ago
A random sample of 70 printers discovered that 25 of them were being used in small businesses. find the 95% limit for the popula
kvasek [131]

Answer:

The sample proportion of printers used in small business is:

\hat{p}=\frac{25}{70}=0.3571

The 95% confidence interval for the population proportion of printers that are used in small businesses is:

\hat{p} \pm z_{\frac{0.05}{2}} \sqrt{\frac{\hat{p}(1-\hat{p})}{n} }

Where:

z_{\frac{0.05}{2}}=1.96 is the critical value at 0.05 significance level

\therefore 0.3571 \pm 1.96 \sqrt{\frac{0.3571(1-0.3571)}{70} }

         0.3571 \pm 0.1122

         \left ( 0.3571 - 0.1122, 0.3571 + 0.1122 \right)

         \left(0.245,0.469 \right)

Therefore, the 95% confidence interval for the population proportion of printers that are used in small businesses is (0.245 , 0.469)



7 0
3 years ago
Please help me I beg you substituteion with negative number & order of operations unite 2
Leto [7]

Answer:

see explanation

Step-by-step explanation:

(10)

To evaluate f(- 4) substitute x = - 4 into f(x)

f(x) = 7x - 4x + 3 = 3x + 3

f(- 4) = 3(- 4) + 3 = - 12 + 3 = - 9

(11)

To evaluate f(- 2) substitute x = - 2 into f(x)

f(- 2) = 2(- 2)² - 8 = 2(4) - 8 = 8 - 8 = 0

(12)

To evaluate g(- 3) substitute x = - 3 into g(x)

g(- 3) = - 2(- 3)² + 3(- 3) = - 2(9) - 9 = - 18 - 9 = - 27

4 0
3 years ago
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