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Sholpan [36]
3 years ago
7

GIVING BRAINLEIST PLS HURRY

Mathematics
2 answers:
Zolol [24]3 years ago
8 0
Maybe B?????????????????
Doss [256]3 years ago
6 0
It’s D I’m pretty sure
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Which choice is equivalent to the expression below?<br> -81
mixas84 [53]

Answer:

Well, The expression -81 is equal to -81.

Step-by-step explanation:

-81=-81

7 0
3 years ago
Find the distance between the two points rounding to the nearest tenth (if necessary).
Evgesh-ka [11]

Answer:

approximately 8.5

Step-by-step explanation:

So you can use the distance formula: \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\ which is derived from the Pythagorean theorem because normally x2-x1 would kind of give the distance length between x2 and x1 except sometimes it would be negative which wouldn't make much sense right? but it doesn't matter because it's being squared so the value ultimately becomes positive, and the same thing goes for the y-value. the distance between x2 - x1 really represents the base and y2-y1 represents the height and then adding them together gives the hypotenuse squared which is why you take the square root over the entire thing to find the distance, since the hypotenuse is the shortest distance between two points

Now all you have to do is plug the values in to get

\sqrt{(-7 - (-4))^2 + (-8 - 0)^2}\\\sqrt{(-3)^2 + (-8)^2}\\\sqrt{9 + 64}\\\sqrt{73}\\distance \approx 8.5

5 0
2 years ago
Someone help
Bond [772]

Answer:

C

Step-by-step explanation:

Your numbers are stated in terms of miles.  Greenville is a total of 120 miles from Rick.  He drives x number of miles and sees that there is still 20 miles to go, so at the end of the driving, he has driven the unknown number of miles, x plus the 20 to get where he's going.  That expression is x + 20.  We set that equal to the total number of miles he has to drive and we get the expression for the trip to be x + 20 = 120, option C.

3 0
4 years ago
Plz help!plzzzzzzzzz
Alexxandr [17]

Answer:

Use quickmath.com

or

You can use photo math to get the answer

3 0
3 years ago
Read 2 more answers
Yeah another one ha ha
boyakko [2]

Answer:

16.75 cubic inches

Step-by-step explanation:

<u>Key skills needed: Volume of a cylinder, Volume of a sphere</u>

1) To get the answer to this problem, you need to understand two formulas: The volume of a sphere, and The volume of a cylinder.

  • Volume of a sphere --> V= \frac{4}{3}\pi r^3 (V = volume, and r = radius)
  • Volume of a cylinder --> V = \pi r^2h (V = volume, r = radius,h = height)

These formulas will be needed.

2) In order to solve this problem, we need to find the volumes of both, and the subtract them from one another to find the difference.

3) Let's start by finding the volumes:

  • Cylinder --> V = \pi r^2h            

We have the radius (which is 2) and the height (which is 4)

  • This means we can solve --> V = \pi(2^2)(4)
  • 2 squared is 4, so then it would be --> V = \pi (4)(4)
  • 4 times 4 is 16 so V = 16\pi ---> 16 pi is the same as 50.24 cubic inches (if you use 3.14 as pi).
  • Next is the Sphere--> V = \frac{4}{3}\pi r^3

We have the radius (which is 2) so we can solve

  • V = \frac{4}{3}\pi  (2^3)
  • 2 cubed is 8, so it would be --> V = \frac{4}{3}\pi (8)
  • 8 times 4/3 is 32/3 so --> V = \frac{32}{3}\pi --> which is Around 33.51 cubic  inches

4) Now we have to find the difference, so we do:  

  • 50.24 - 33.51 = 16.74

This means your answer would be 16.75 as that is the closest one.

<em>Hope you understood and have a nice day!! :D</em>

5 0
3 years ago
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