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Valentin [98]
3 years ago
12

I need help really fast and quick

Mathematics
1 answer:
lukranit [14]3 years ago
8 0

Answer:

a.

Step-by-step explanation:

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Given the radius of a cone is 4 cm and its volume is 134 square cm, which of the following is closest to its height?
Mademuasel [1]

Answer:

7.99

Step-by-step explanation:

Volume of cone =  V=πr^2h/3

134 = π*4^2*x/3

x = 7.99

5 0
3 years ago
The table shows information about the numbers of hours 30 children spent on their tablets one evening.A) Find the class interval
Tresset [83]

Answer:

A- 2<h<3   B- 2.2

Step-by-step explanation:

 when you make a dot plot, the median is 11. using that dot plot, you can approximate a mean to be around 2

8 0
3 years ago
The equation 10x + 5y = 150​
Verdich [7]

Answer:

x = 14.5      y = 1

Step-by-step explanation:

get the x alone by subtracting 5y from both sides

10x + 5y = 150

      - 5y    -5y

10x = -5y + 150

divide both sides by 10

<u>10x</u> = <u>-5y + 150</u>

10            10

x = -0.5y + 15

Now that we've solved for x, we can plug it into the original equation

10 (-0.5y + 15) + 5y = 150

now we solve for y the same way we did x

first distribute 10 into (-0.5y + 15)

-5 + 150 +5y = 150

now we get the y alone

-5 + 150 + 5y = 150

+5  -150            -150 +5

5y = 5

now divide by 5

<u>5y</u> = <u>5</u>

5     5

y = 1

now that we have both x and y, we plug y into our solution for x

x = -0.5y + 15

x = -0.5(1) + 15

x= -0.5 + 15

x = 14.5

4 0
3 years ago
5x-3y-z<br> If x= -2, y=2 and z= -3
Mademuasel [1]
This is fairly simple
Plug in the numerical values given for each variable.
5(-2) -3(2) -(-3)
-10 -6 + 3 (negative x negative = positive)
-16 + 3
-13 is the final answer
6 0
3 years ago
What point is a solution to the inequality shown in this graph? (-3,-6) &amp; (3,2)
NARA [144]

Answer:

(0,5)

Step-by-step explanation:

7 0
3 years ago
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