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Ivenika [448]
3 years ago
14

Can someone please help me

Mathematics
1 answer:
pentagon [3]3 years ago
6 0
V = Volume of cylinder
B = area of base
h = height of cylinder

It turns out that
V = B*h
In a similar way to that of a cube

If we know that V = 84pi and h = 7, then we can plug those values into the formula above, and solve for B

V = B*h
84pi = B*7
84pi/7 = B*7/7 ... divide both sides by 7
12pi = B
B = 12pi

Therefore the base is 12pi square units
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Tomas bought 80 tickets for rides at an amusement park. Each ride costs 5 tickets, and Tomas has been on x rides so far. Which e
Alex Ar [27]

Answer:

Option A, C and D are correct choices.

Step-by-step explanation:

Let x be the number of rides that Tomas has been on so far. Each ride costs 5 tickets. This means that cost of x rides will be 5x.

We are told that Tomas bought 80 tickets for rides at an amusement park.

To find the number of of tickets that Tomas has left we will subtract cost of x rides from total number of tickets that Thomas bought.

We can represent this information in an expression as: 80-5x

Now let us see which of our given choices in equivalent to our expression.

A. 80-5x

Upon looking at option A we can see that it is same as our expression, therefore, option A is the correct choice.

B. 80+5x

We can see that in this expression cost of x rides in being added instead of subtraction, therefore, option B is not a correct choice.

C. 5(16-x)

Upon distributing 5 we will get,

80-5x

Now this expression is same same as our expression, therefore, option C is the correct choice.

D. -5x+80

This expression is also same as our expression as we can rearrange the terms in this expression as: 80-5x, therefore, option D is a correct choice as well.

E. 5(16+x)

Upon distributing 5 we will get,

80+5x

We can see that in this expression cost of x rides in being added instead of subtraction, therefore, option E is not a correct choice.

6 0
3 years ago
Answer fast but correctly​
olasank [31]

{m}^{2}  - n \\ Given, \:  \: m = 3 \:  \: n = 2, then, \\ \:  \:  {(3)}^{2}  - 2 \\  = 9 - 2 \\  = 7

<u>Answer</u><u>:</u>

<u>a.</u><u> </u><u>7</u>

Hope you could understand.

If you have any query, feel free to ask.

3 0
2 years ago
Read 2 more answers
If the mean of the data below is 3.8, find m<br>x 1 2 3 4 5 6<br>f 1 4 7 m 6 3​
zloy xaker [14]

Answer:

m = 1.8

Step-by-step explanation:

Given data is as follows :

x 1 2 3 4 5 6

f 1 4 7 m 6 3​

We need to find the value of m if the mean of the data is 3.8.

Mean = sum of observations/no. of observations

So,

3.8=\dfrac{1+4+7+m+6+3}{6}\\\\22.8=21+m\\\\22.8-21=m\\\\m=1.8

So, the value of m is equal to 1.8.

8 0
3 years ago
The first U.S. census was conducted in 1790. At that time, the population was 3.93 million. Since then, the U.S. population has
Nikolay [14]

Answer:

It's actually A, because the US population got doubled ever year

4 0
2 years ago
50 POINTS!!! PLEASE HELP QUICK! In the figure below, AB is a diameter of circle P.
Minchanka [31]

Answer:

43°

Step-by-step explanation:

7x+1+9x-7=90

16x-6=90

16x=96

x=6

the minor arc AD = 7x+1 =7(6)+1

= 42+1=43°

6 0
2 years ago
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