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Ierofanga [76]
2 years ago
10

A company makes steel rods shaped like cylinders. Each rod has a radius of 4 centimeters and a height of 20 centimeters. If the

company used 28,134.4cm cubed of steel, how many rods did it make?
Use 3.14 for\pi , and do not round your answer.
Mathematics
1 answer:
Tamiku [17]2 years ago
5 0
(One steel rod’s volume) = 3.14 x 4^2 x 20

= 1004.8cm^3

(Used steel) / (One steel rod’s volume) =

(Made steel rod’s number)

The answer is 28
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$4.50 for 10 ounces of trail mix
padilas [110]

Answer:

45¢ for 1 ounce of trail mix

is that what you're looking for?

Step-by-step explanation:

4.50÷10=.45

3 0
2 years ago
Algebra: mrs. Davis spent $120 on lunch for a business meeting. Sandwiches,x, cost $4 and drinks, y, cost $1.50. A) write a func
SOVA2 [1]

Answer:

a) Total number of Sandwiches and drinks purchased  =  x + y

b)The three possible solution to the given equation  is

: (25,4), (20,8) and  (15,12)

Step-by-step explanation:

Number of sandwiches in Lunch  = x

Cost of each sandwich  = $4

Number of Drinks in Lunch = y

Cost of each drink = $1.50

a)  So, the total number of Sandwiches and drinks purchased in Lunch

    = Number of sandwiches purchased + Number of drinks purchased

    = x + y

or, the total number of Sandwiches and drinks purchased  =  x + y

Now According to the question:

4 x  + 5 y = 120

To find possible pairs of solution take any arbitrary value for y .

Let y  = 4, then 4x  = 120 - 20 = 100

or, x = 100/4 = 25 ⇒  x  =25

Let y = 8, then  4x  = 120 - 420 = 80

or, x = 80/4 = 20  ⇒  x  = 20

Similarly, for y = 12, x  = 15

So, the three possible solution to the given equation  is : (25,4), (20,8) and  (15,12)

8 0
3 years ago
Solve the equation. −2 1/4=r−4/5 will give brainiest for the first correct answer!!!
STatiana [176]

Answer:

r = -1 9/20

Step-by-step explanation:

-2 1/4 = r - 4/5

Switch sides:

r - 4/5 = -2 1/4

Add 4/5 to both sides.

r = -2 1/4 + 4/5

Change the mixed numeral into a fraction:

r = -9/4 + 4/5

The LCD is 20.

r = -45/20 + 16/20

r = -29/20

r = -1 9/20

6 0
3 years ago
A hockey team plays in an arena with a seating capacity of 15,000 spectators. With the ticket price set at , average attendance
Goshia [24]

Answer:

Ticket price 11,5 $  

R(max)  =  132750 $

Step-by-step explanation:INCOMPLETE QUESTION

The ticket price is missing

We will assume 12 $

Let call x the decreasing number of the ticket price

The revenue is

R =  ticket price * numbers of spectator

R(x) =  (  12 - x ) *  ( 11000 + 1000*x )   for all   0 ≤ x  ≤ 4   ( the seating capacity is 15000 )

R(x) =  132000 + 12000*x  - 11000*x - 1000*x²

R(x) =  132000 + 1000*x  - 1000*x²

Taking derivatives on both sides of the equatio we get:

R´(x)  =  1000  -  2000x

R´(x)  = 0    ⇒    1000  -  2000x  =  0

x  =  1000/2000    ⇒  x = 0,5 $

We notice that R´´(x)  < 0    then we have a maximum for  x = 0,5

and the price is 12 - 0,5  = 11,5 $ for ticket

and the R(max) is

R(max) = 132000 + 1000*0,5  + 1000* (0,5)²

R(max) = 132000 + 500 + 250

R(max) = 132750 $

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=if%20x%20%3D%20-5%5C%5Cx%5E%7B2%7D%20%2B%203%5C%5Cx%20-%202" id="TexFormula1" title="if x = -5
levacccp [35]

Answer:

this question is inappropriate

8 0
3 years ago
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