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timama [110]
3 years ago
11

I need help trying to figure this out I think I have and answer but I want to make sure.

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
3 0

Answer:

34

Step-by-step explanation:

The mean is calculated as

mean = \frac{frequency(midpoint)}{frequency}

let x be the missing frequency, then

Total frequency × midpoint

= (16 × 2) + 7x + (20 × 12) + (10 × 17) = 32 + 7x + 240 + 170 = 442 + 7x

Total frequency = 16 + x + 20 + 10 = 46 + x, thus

\frac{242+7x}{46+x} = 8.5 ( cross- multiply )

442 + 7x = 8.5(46 + x)

442 + 7x = 391 + 8.5x ( subtract 8.5x from both sides )

442 - 1.5x = 391 ( subtract 442 from both sides )

- 1.5x = - 51 ( divide both sides by - 1.5 )

x = 34

The missing frequency is 34

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Fill in the blank to make the statement true.
Igoryamba

Answer: x= 385/12

Step-by-step explanation:

You would first change the denominator to some number that is common. Then combine the like terms. Lastly, subtract the fraction from the equal and you get your x.

\frac{13}{4} +\frac{1}{6} +x=\frac{71}{2} \\(\frac{39}{12})+(\frac{2}{12})+x=\frac{426}{12} \\\frac{41}{12}+x=\frac{426}{12}  \\x=\frac{385}{12}

6 0
2 years ago
Read 2 more answers
Application Question:
Alika [10]
When you add 4 to 25 you get 21 then subtract 11 and get 10 and then add 15 which is equal to 25 and then subtract 13.

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7 0
3 years ago
Which of the following is the graph of the quadratic function? y=x^2+4-12
tiny-mole [99]

Answer:

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Step-by-step explanation:

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Now the first thing we will do here is to solve the quadratic equation graph;

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So the graph that touches the x-axis at the points x = 2 and x = -6 is the solution to the quadratic equation

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Hope this helps! :D
4 0
3 years ago
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