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Andreas93 [3]
3 years ago
14

What is the surface area

Mathematics
1 answer:
nexus9112 [7]3 years ago
5 0

Answer:

A 1759 sq. units

Step-by-step explanation:

to find the surface area of a closed cylinder the formula is

2πr² + πdh

r = radius = 10

d = diameter = 10 + 10 = 20

2 x 3.14 x 10² + 3.14 x 20 x 18

628.3 + 1130.94 = 1759.24

ans = 1759

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Which ordered pair (a, b) is a solution to the given system of linear equations? -2a+3b=14
Stels [109]

Answer:

The solution of the system is the ordered pair (-13,-4)

Step-by-step explanation:

we have

-2a+3b=14 -----> equation A

a-4b=3 ----> equation B

Solve the system by elimination

Multiply by 2 both sides equation B

2(a-4b)=2(3)

2a-8b=6 ----> equation C

Adds equation A and equation C

-2a+3b=14\\2a-8b=6\\-------\\3b-8b=14+6\\-5b=20\\b=-4

<em>Find the value of a</em>

substitute the value of b in any equation (i take equation B)

a-4(-4)=3

a+16=3

a=-13

therefore

The solution of the system is the ordered pair (-13,-4)

6 0
3 years ago
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Find the solutions of the system y = –2x – 1 and y = 3–x–1. What are the x-coordinates of the solutions? Choose all that apply.
Wittaler [7]
Hello : 
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3 years ago
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Find the area of each round your answer to the nearest tenth
daser333 [38]

Answer:

Area of a circle- <em>pi </em>x <em>r </em>square

3.14 x 2 x 2

= 3.14 x 4

= 12.56

Round off- 13

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3 years ago
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ILL GIVE BRAINLIST FOR CORRECT ANSWERS<br> NEED HELP ASAPPP to the question on the picture
kondaur [170]
Choice b would be correct since the slope of the line is negative !
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3 years ago
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uranmaximum [27]
0.94>0.49 because 0.94 is the larger number.

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3 years ago
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