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Ugo [173]
2 years ago
13

Mario received 0.40 in change from 20 when he bought tail mix. How many pounds of tail mix did Mario buy?

Mathematics
1 answer:
Katen [24]2 years ago
5 0
So making a simple equation helps to get all the information together

20 - 3.5X = 0.4

20 is the original. Minus the amount you paid for. equals the cash you got back

subtract 20 over

-3.5X=-19.6
Then divide both sides by -3.5
X=5.6

He bought 5.6 pounds 
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LUCKY_DIMON [66]
? Wth.....................
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2 years ago
Fareed want to add 1/4+5/8
BigorU [14]

Answer:

\frac{7}{8}

Step-by-step explanation:

1st you want to find a common denominator. which is 8.

2nd change \frac{1}{4} to \frac{2}{8}

3rd you add \frac{2}{8} and \frac{5}{8} together an you get \frac{7}{8}

8 0
3 years ago
For all values of x,<br>f(x) = x^2 + 3x and g(x) = x - 4<br>Show that fg(x) = x^2 - 5x + 4​
Westkost [7]

Answer:

f(g(x)) =  x² - 5x +4

Step-by-step explanation:

<u><em>Explanation</em></u>

Given that the functions

         f(x) = x² + 3 x   and g(x) = x-4

     f(g(x)) = f(x -4)   (∵ g(x) = x-4)

              = (x-4)² + 3(x-4)

              = x² - 2(4)x + 4² + 3x -12

             = x² - 8 x + 16 + 3x -12

             = x² - 5x +4

∴ f(g(x)) =  x² - 5x +4

4 0
3 years ago
What is the decimal number for 77/200
prohojiy [21]
0.385 use the calculator
3 0
2 years ago
It’s not C and I suck at math can someone plz help me on this plz and thx
Fittoniya [83]

Answer:

a

Step-by-step explanation:

The volume (V) of a cone is calculated as

V = πr²h ( r is the base radius and h the perpendicular height )

To calculate the height h use the right triangle formed by the radius and the inclined side.

Given diameter = 22, then r = 22 ÷ 2 = 11 cm

Using Pythagoras' identity on the right triangle, then

h² + 11² = 61² , that is

h² + 121 = 3721 ( subtract 121 from both sides )

h² = 3600 ( take the square root of both sides )

h = \sqrt{3600} = 60

Thus

V = π × 11² × 60

   = 3.14 × 121 × 60 ≈ 22796.4 cm³ → a

7 0
3 years ago
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