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defon
3 years ago
10

Eric sells movie tickets. Adult tickets cost $8 and children's tickets cost $5. He keeps 15% of his sales. Which expression repr

esents how much he keeps.
Mathematics
1 answer:
likoan [24]3 years ago
6 0
The formula for the cost of the total sales is: 8a+5c where a is the number of adult tickets and c is the number of child tickers.

If he keeps 15% the formula is: 0.15(<span>8a+5c) </span>
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Determine if the equation is linear. If so, graph the function.
musickatia [10]

Answer:

The equation is not linear

Step-by-step explanation:

You are given the equation

\dfrac{2}{x}+\dfrac{y}{4}=\dfrac{3}{2}

Express y in terms of x:

\dfrac{y}{4}=\dfrac{3}{2}-\dfrac{2}{x}\\ \\\dfrac{y}{4}=\dfrac{3x-4}{2x}\\ \\y=4\cdot \dfrac{3x-4}{2x}\\ \\y=\dfrac{6x-8}{x}

The linear function must of form

y=mx+b,

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Your function is not of this form, so this is not a linear function.

5 0
3 years ago
What is 39.79949748 rounded to the nearest hundredth?
Rufina [12.5K]

Answer:

Number = 39.80

Step-by-step explanation:

Given

Number = 39.79949748

Required

Approximate (to the nearest 100th)

This means that, we approximate at the second digit after the decimal.

So:

i.e,

Number = 39.79  [Begin  approximation] 949748

The first digit after [Begin approximation] is then approximated using the following rule:

0 - 4 \approx 0

5 - 9 \approx 1\\

Since 9 falls in 5 - 9 \approx 1\\ category, the number becomes:

Number = 39.[79+1]

Number = 39.80

3 0
2 years ago
the US Census found at the population per square mile in the state rose from 128.7 to 191.3 during the last 10 years. By how muc
rewona [7]

Answer:

The population growth is 6.26 per square mile per year

Step-by-step explanation:

We are given

he US Census found at the population per square mile in the state rose from 128.7 to 191.3 during the last 10 years

So,

Initial population =128.7

Final Population =191.3

Total time =10 years

now, we can find population grow per year

=\frac{final-initial}{T}

now, we can plug values

=\frac{191.3-128.7}{10}

=6.26

So,

The population growth is 6.26 per square mile per year

3 0
3 years ago
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Why is it unimportant to have the same powers of 10 we multiplying and dividing in Scientific Notation
nikdorinn [45]
We only need to worry about the exponents
6 0
2 years ago
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What is the anwser to this equation? 36=15+7x
deff fn [24]

Answer:

x = 3

Step-by-step explanation:

  1. Subtract 15 from each side, so it now looks like this: 21 = 7x
  2. Divide each side by 7 to cancel out the 7 next to x. It should now look like this: 3 = x

I hope this helps!

7 0
3 years ago
Read 2 more answers
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