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Brut [27]
3 years ago
5

I Needdd helppp with this??

Mathematics
2 answers:
iren2701 [21]3 years ago
5 0

Answer:

option c. ±\sqrt{65}

Step-by-step explanation:

In the given right angled triangle we can see that :-

  • hypotenuse is 9
  • adjacent is 4
  • opposite is x

by Pythagoras theorem

hypotenuse² = adjacent ² + opposite ²

9² = 4² + x²

81 = 16 + x²

combining like terms

81 - 16 = x²

65 = x²

x = ±\sqrt{65}

arlik [135]3 years ago
3 0

Answer:

B I'm thinking, I have to answer any question so I might be wrong here, also eat some salad it's nasty I know

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melamori03 [73]

Answer:

Step-by-step explanation:

Yes

3 0
3 years ago
Can someone help me plz
viva [34]

The side length of the square base is 18 inches and the height of the pyramid is 9 inches.

Step-by-step explanation:

Step 1:

The volume of a square pyramid is calculated by multiplying the square of the base edge with the height of the pyramid and \frac{1}{3}.

The volume of a square pyramid, V = a^{2} \frac{h}{3}.

Step 2:

From the given diagram, the base edge is the length of the four base edges which is x inches in this pyramid. a = x inches.

The height of the pyramid is from the base to the top, h = \frac{x}{2} inches .

The volume of a square pyramid, V = 972.

Substituting the known values, we get

972 = (x)^{2} (\frac{x}{2})  (\frac{1}{3} ) = \frac{x^{3} }{6} .

x^{3} = 6(972) = 5,832. x = \sqrt[3]{5,832} = 18.

So x is 18 inches long.

The side length = x = 18 inches.

The height of the pyramid = \frac{x}{2} = \frac{18}{2} = 9 inches.

4 0
3 years ago
The following formula gives the area of a circle, A, dependent on its radius, r.
Firdavs [7]

Answer:

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Step-by-step explanation:

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r^2=A/pi

r=sqrt(A/pi), -sqrt(A/pi)

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3 years ago
Dan has an old lawn mower! It takes him 1 hour to mow the whole lawn. How many square yards does Dan cut in one minute? Hints: T
Mila [183]

Answer:

No solution is possible from the information given.

The area of the lawn is unknown.

Step-by-step explanation:

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2 years ago
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Sloan [31]
X+y =1212
x-y = 518
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