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tatyana61 [14]
3 years ago
6

Simplify x (2x - 1) + 5 and find its value at x=3 ​

Mathematics
1 answer:
hichkok12 [17]3 years ago
5 0

Answer:

20

Step-by-step explanation:

x=3

x(2x-1)+5

3 (2 (3)- 1)+ 5

3 (6- 1)+ 5

3(5)+5

15+5

20

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Thepotemich [5.8K]

Answer:

Hi.

Step-by-step explanation:

Because this question is asking how much water the water tower can hold, it's asking for the volume of a cylindrical figure. Let's use this formula:

V

=  

π

r

2

h

First, let's find our variables by plugging in our information.

r

=  

(

1

2

)

d

 

r

=  

(

1

2

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20

r

=  

10

h

=  

24

V

=  

π

(

10

2

)

(

24

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Following PEMDAS (Parentheses, Exponents, Multiply, Divide, Add, Subtract), we'll find  

(

10

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first.

V

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π

(

100

)

(

24

)

 

Now, multiply (100) and (24):

V

=  

π

(

2400

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V

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2400

π

f

t

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~

7539.8

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6 0
4 years ago
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7 0
3 years ago
I have a really hard time with math. Please explain this to me.
Igoryamba
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8 0
3 years ago
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