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kompoz [17]
4 years ago
5

Two times a number plus four is 22. What is the number

Mathematics
2 answers:
Artist 52 [7]4 years ago
8 0
2n + 4 = 22
      -4   -4
    2n = 18
   n=9
LiRa [457]4 years ago
4 0
Use the expression to solve for the number.

2n + 4 = 22
2n = 22 - 4
2n = 18
n = 18/2
n = 9

The number is 9.

Hope this helps :)
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The major and minor axes of an ellipse are 25 inches and 4 inches in length. What is the area of the ellipse?
Nostrana [21]

Answer:

Therefore, the area of the ellipse is:

                                               Area = 78.5 inches

Step-by-step explanation:

The formula to find the area of the ellipse is

\:a\:\times \:b\:\times \:\pi

The major axis of an ellipse = 25 inches

The minor axis of an ellipse = 4 inches

  • The value of a = major axis/2 = 25/2 = 12.5 inches
  • The value of b = minor axis/2 = 4/2 = 2 inches

Thus

The area of the ellipse:

                                     Area = \:a\:\times \:b\:\times \:\pi

                                              =\:12.5\:\times\:2\:\times\:\pi

                                              =25\pi

                                               =78.5 inches     ∵ \pi =3.14

Therefore, the area of the ellipse is:

                                               Area = 78.5 inches

5 0
3 years ago
At pizza express it takes 6 cup of cheese to make 15 pizza.At perfect pizza it takes 4 cups of cheese to make 6pizza if the numb
ipn [44]
Perfect pizza because 15*6=90, and of each pizza place were to make 90 pizzas, perfect pizza uses 60 cups of cheese while pizza express only uses 36. The difference is by 24 cups.
8 0
3 years ago
Write an expression to represent the perimeter of a rectangle with the length of x -4 and width of 2x +8.
brilliants [131]

Answer:

2(x-4) + 2(2x+8) OR long way (x-4) + (x-4) + (2x+8) + (2x+8)

Step-by-step explanation:

2(x-4) represents the (x-4) + (x-4) in the longer version since for perimeter you add the sides. Same thing for the other side, 2(2x+8) represents (2x+8) + (2x+8).

Not sure if you need the expression solved but here:

2(x-4) + 2(2x+8)\\(2x-8) + (4x+16)\\=6x+8

To get from first line to second, use distributive property. To get from second to third line, combine like terms.

8 0
3 years ago
Read 2 more answers
you mix the letters M,A,T,H,M,A,T,I,C,A,and L. Without looking you draw a letter. Find the probability. Write the probability as
viktelen [127]
The probability in fraction form is...
3/11
The probability in decimal form is...
0.27
The probability percentage is...
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6 0
4 years ago
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An investment pays 10% interest compounded monthly. What percent, as a decimal, is the effective annual yield? Enter your answer
NemiM [27]

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6 0
2 years ago
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