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larisa86 [58]
3 years ago
13

Find the surface area. Round to the nearest hundredth.

Mathematics
1 answer:
lina2011 [118]3 years ago
6 0

Answer:

C. 570.20 ft²

Step-by-step explanation:

Surface

A = 2·pi·r^2 + 2·pi·r·h

A = 2·pi·5.5^2 + 2·pi·5.5·11 = 570.20 ft²

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Pls help ;-;
anyanavicka [17]

Answer:

C

Step-by-step explanation:

A closed circle means inclusive, and -2 is included in values that would make the equation true. Then you just have to test another number greater than and less than -2 to see which way the arrow should point.

-3(-3) + 1 < 7

9 + 1 < 7

10 < 7 FALSE

-3(0) + 1 < 7

1 < 7 TRUE

All values (including -2) will make this equation true

6 0
3 years ago
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How many solutions does y=1/2x have
bezimeni [28]
The answer would be 1
5 0
3 years ago
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Simplify (x^2-8x+2) - (3x^2+x-1)
REY [17]

Answer:

−2x^2 − 9x + 3

Hit Brainliest if this was helpful! :)

5 0
2 years ago
Write an equation. Let x be the unknown number.
dolphi86 [110]

Answer:

Unknown number, x=-4

Step-by-step explanation:

Forming the equation from the information provided above.  

9=2x+17

If we solve for the unknown number, we first collect like terms together.

2x=9-17

2x=-8

Divide both sides of the equal sign by 2 the coefficient of x

x=-4

3 0
4 years ago
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210 balloons are filled for a reception this is 70% of the entire number balloons purchased which equation can be used to find t
Yuri [45]

Answer:

300 balloons.

Step-by-step explanation:

Given:

210 balloons are filled for a reception this is 70% of the entire number balloons purchased.

Question asked:

Which equation can be used to find the total number of balloons purchased ?

<u>Solution:</u>

Let total number of balloons purchased = x

70% of the number of balloons purchased  = 210

\frac{70}{100} \times x=210\\ \\ \frac{7x}{10} =210\\ \\ By\ cross\ multiplication\\ \\ 7x=210\times10\\ \\7x=2100\\\\   By\ dividing\ both\ sides\ by\ 7\\ \\ \frac{7x}{7} =\frac{2100}{7} \\ \\ x=300

Therefore, total number balloons purchased was 300.

3 0
4 years ago
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