3 years ago

The table shows a function.

Mathematics

1 answer:

enyata [817]3 years ago

4 0

Answer: I need this too.

Step-by-step explanation:

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

yKpoI14uk [10]

Answer:

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

3 0

3 years ago

Of 201 adults selected randomly from one town, 179 have credit cards. Find a 90% confidence interval for the true proportion of

tino4ka555 [31]

Answer:

I think this is a probability problem.

Step-by-step explanation:

201*0.9 the divide by 179??

7 0

3 years ago

Need help on this question. The first and second dropdown box has the numbers 1, 2, 3, and 4. I believe that the 3rd box is y-ax

ELEN [110]

I think it is two up and two right lol if that answers your question

4 0

4 years ago

Solve for c; a/b+c=d/c

Eduardwww [97]

To solve for c, you need to get c onto one side of the equation, or make it c=__. So what I would do first is subtract a/b from both sides

a/b + c = d/c

-a/b

a/b - a/b + c = d/c - a/b

c = d/c-a/b

8 0

4 years ago

NEED HELP ASAP

Annette [7]

Answer: It would be approximately 2000 ft.

Step-by-step explanation:

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3 years ago