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mart [117]
4 years ago
13

Find the volume of a right circular cone that has a height of 6.7 in and a base with a circumference of 9.8 in. Round your answe

r to the nearest tenth of a cubic inch.
Mathematics
1 answer:
8090 [49]4 years ago
6 0
v = 17.06851cu.inches
when rounded the answer would be 20cu. inches
The formula for finding the volume of a cone is
1/3(hπr^2)
since we don't know the radius we can find it out through the equation of finding the circumference which is π x d =9.8inches
so the diameter is 9.8/π
which is 3.119437 inches
since the diameter is 2xradius so it would be
3.119437/2=1.559718
so now we can plug this into our equation

1/3(6.7x3.141592653x1.559718^2)
so that would be 17.06851cu.inches


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Solve by substitution: <br> -5x + y = -2<br> -3x + 6y = -12<br><br> please explain
fomenos

First we pick the equation. Let's say we pick first one. From it we express y.

-5x+y=-2\Longrightarrow y=-2+5x

Then we use this y and plug it in instead of y in the second equation.

-3x+6(-2+5x)=-12

Now just solve for x.

-3x-12+30x=-12 \\-3x=-30x \\\underline{x=10}

We plug this x in the first equation.

-5\cdot10+y=-2

And solve for y.

-50+y=-2 \\\underline{y=48}

So the solution to the equation is geometrically a point P which lies on the intersection of the two lines.

\boxed{P(10,48)}

Hope this helps.

r3t40

4 0
4 years ago
Mariya was asked to solve StartFraction a over negative 13 EndFraction less-than-or-equal-to negative 16 and then graph the solu
lozanna [386]

Answer:

the answer is step 3 because the circle on the number line is open.

pls make mine as the  Brainliest answer that would really help

8 0
4 years ago
Read 2 more answers
Pls help on both of these
Makovka662 [10]

Answer:

power of products

Step-by-step explanation:

just multiplied the powers

6 0
3 years ago
Answer urgently needed pls
Roman55 [17]

Given that the integral is given as \int_{0}^{12} f(t) dt, Hence, we are required to find the area under the graph where t is between 0 and 12. The correct answer is 2 (Option A) See the explanation below.

<h3>What is an integral?</h3>

An integral is a function of which a given function is the derivative, that is, when differentiated, it returns that function, and it can express the area under the curve of a graph of the function.

Hence the areas under the graph for the above function are given as:

12 + 6 + 2 + (-2) + (-16)

= 20-18

= 2

Notice that the following figures were arrived at by dividing the areas under the graph into common geometric shapes and deriving their area.

For example, the first three positive values were derived by dividing the positive part of the graph into two triangles and a rectangle.

The length of the rectangle is 6 while its height is 2

Area of a rectangle is L x W

= 6 * 2

= 12

It is to be noted that the areas under the curve are negative hence the negative results. See the attached image.

Learn more about graphs at:
brainly.com/question/19040584
#SPJ1

4 0
2 years ago
Marcus bought a booklet of tickets to use at the amusement park. He used 50% of the tickets on rides, 1/4 of the tickets on vide
shtirl [24]

Answer:

No, 25%, 50%, 25%

Step-by-step explanation:

Find the percentage of tickets left:

50 + 25 = 75

(percents are out of 100)

100 - 75 = 25

He saids he used the rest of the tickets at the batting cage so it would be 25% not 24%

7 0
3 years ago
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