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2 years ago

A model of a volcano has a height of 12 in., and a diameter of 12 in.

Mathematics

2 answers:

solong [7]2 years ago

6 0

Answer:

452.16 cm³

Step-by-step explanation:

I assume the shape of the volcano is a cone.

V = (1/3)πr²h

r = d/2 = 12 in./2 = 6 in.

V = (1/3)(3.14)(6 in.)²(12 in.)

V = 452.16 in.²

Scilla [17]2 years ago

5 0

Answer:

Step-by-step explanation:

Radius r = 6 inches

Height h = 12 inches

volume of cone = πr²h/3 ≈ 3.14∙6²∙12 = 1,356.48 in³

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The difference of six times a number and 7 is -49

gtnhenbr [62]

Greetings!

"The difference of six times a number and 7 is -49"...

In number and variables, this would be:
 $6x-7=-49
$

Add 7 to both sides.
 $(6x-7)+7=(-49)+7$
Simplify.
 $6x=-42$
Divide both sides by 6.
$(6x)/6=(-42)/6$
Simplify.
$x=-7$

Hope this helps.
-Benjamin

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Answer:

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Step-by-step explanation:

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morpeh [17]

Substitute each value until the answer is correct

a. 1 = -4 x -5 -1
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b. 15 = -4 x 4 -1
15 does not equal -17
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just to make sure the last answer is incorrect
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A group of adults and students went on a class trip to Washington, DC. The number of male students was 1 more than 7 times the n

JulsSmile [24]

M + f + a = 82
m = 7a + 1
f = 1/2m.....f = 1/2(7a + 1).....f = 3.5a + 0.5

7a + 1 + 3.5a + 0.5 + a = 82
11.5a + 1.5 = 82
11.5a = 82 - 1.5
11.5a = 80.5
a = 80.5 / 11.5
a = 7......7 adults

m = 7a + 1
m = 7(7) + 1
m = 49 + 1
m = 50 <=== 50 male students

f = 1/2m
f = 1/2(50)
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3 years ago