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oksano4ka [1.4K]
3 years ago
13

Find the volume of a pyramid with a square base , where the area of the base is 7.5 cm ^ 2 and the height of the pyramid is 8.6

cm. Round your answer to the nearest tenth of a cubic centimeter.
Mathematics
1 answer:
svetlana [45]3 years ago
4 0

Answer: 21.5cm³

Step-by-step explanation: This is your answer there is no way it is incorrect

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777dan777 [17]

Answer:

Hi there!

The correct answer is: 20

Step-by-step explanation:

knowing this a right triangle you can solve this problem in two ways

Method One: Pythagorean Theorem

a^2 + b^2 = c^2 then plug in the values

(12)^2 + (16)^2 = c^2 this will come out to be 400 = c^2

square root both sides and you get c = 20

Method Two: Pythagorean Identities

if you ever learned the Pythagorean identity 3,4,5

this triangle is indeed a 3,4,5 triangle it's just that each side is multiplied by the factor 4

so in this case since you know the missing side should be 5 you just multiply 5 by 4 and you get 20

 

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3 years ago
If f(x)=7(x-1)+8, what is the value of f(1)<br>​
irga5000 [103]

Answer:

8

Step-by-step explanation:

f(1)=7(1-1)+8

f(1)=7(0)+8

f(1)=0+8

f(1)=8

4 0
3 years ago
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solve (3sqrt(2))/(sqrt(3) + sqrt(6)) - (4sqrt(3))/(sqrt(2) + sqrt(6)) + (sqrt(6))/(sqrt(3) + sqrt(3))​
ValentinkaMS [17]

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Step-by-step explanation:

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2 years ago
Tan39= x/68<br> Plz help. Will give brainliet
lesya [120]

Answer:

\huge\boxed{x \approx 55}

Step-by-step explanation:

We need to note that this is an equation, in which we can solve for x.

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We can use a calculator to find the tangent of 39 - we type 39 into the calculator then press the "TAN" button to find it's tangent. We find that to be around 0.81.

We now have the formula simplified down to 0.81 = \frac{x}{68}. To solve for x, we want to isolate it on one side, so we can multiply both sides by 68 to get rid of the fraction.

We know have 0.81 \cdot 68 = x

0.81 \cdot 68 = 55.08 \approx 55, so x is approximately 55.

Hope this helped!

6 0
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ra1l [238]

Answer:

X=1.1

Step-by-step explanation:

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