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Degger [83]
3 years ago
15

PLZZ ANSWER AND ANSWER STEP BY STEP PLZZZ I NEED HELP!

Mathematics
1 answer:
Tcecarenko [31]3 years ago
8 0

Answer:

$ 200.205

Step-by-step explanation:

For the first 10 1/2 hours, she earns $9.50 × 10 1/2 = $99.75

To get the no of hours she worked after that: 20 1/4 - 10 1/2 = 9 3/4 hrs

In 9 3/4 hrs, she earns $10.30 × 9 3/4 = $ 100.425

Total amount of money earned = $99.75 + $ 100.425 = $ 200.205

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Concert ticket prices are $18 for a screening with 500 attendees. For each $1 increase in ticket price, attendance decreased by
icang [17]

Answer:

$59

Step-by-step explanation:

Let the revenue will be maximum when $ x is increased in the ticket price.

So, the final ticket price is $(18 + x) and attendance in the concert will be (500 - 5x)

So, revenue R = (18 + x) (500 - 5x) = 9000 + 410x - 5x².......... (1)

Condition for R to be maximum is \frac{dR}{dx}  =0

So, differentiating equation (1) with respect to x on both sides

\frac{dR}{dx} =410-10x = 0

⇒ x = 41

So, the ticket price for maximum revenue is $(18 + 41) = $59 (Answer)

6 0
4 years ago
A right triangle with side a being 7 and the hypotenuse is 8. Find the measure of the missing side length. Round your answer to
Virty [35]

Answer:

4

Step-by-step explanation:

use the Pythagoras' theorem

formula for an ABC triangle( right angled)

AB is height

BC is hypotenuse

CA is length

BC^{2} = AB^{2} + CA^{2}

in your case

AB is 7

BC is 8

CA is unknown so we write x

8^{2}=7^{2}+x^{2}

64=49+x^{2}

64-49=x^{2}

15=x^{2}

\sqrt{15} =x

3.87=x

4=x

7 0
3 years ago
Slope Intercept Form:<br> put the equation in slope intercept form.<br> 14x = 6y - 12
Pavlova-9 [17]

Answer:

y = 7/2x + 2

Step-by-step explanation:

To put the equation in slope intercept form [ y = mx + b ], we need to solve for y.

14x = 6y - 12

~Subtract 6y to both sides

14x - 6y = -12

~Subtract 14x to both sides

-6y = -12 - 14x

~Divide -6 to everything

y = 2 + 7/3x

~Reorder

y = 7/2x + 2

Best of Luck!

8 0
3 years ago
There are only about 400,000 African elephants left in the world today. They are
kozerog [31]

Answer:

In 50 years there'll be approximately 3582 elephants.

Step-by-step explanation:

If they are decreasing at a rate of 9% per year, it means it's population by year is:

population(0) = 400000

population(1) = population(0)*(100% - 9%) = population(0)*(91%)

population(2) = population(1)*(91%) = population(0)*(91%)*(91%) = population(0)*(91%)²

population(3) = population(2)*(91%) = population(0)*(91%)²*(91%) = population(0)*(91%)³

And so on, so the number of population as years passes is:

population(n) = population(0)*(91/100)^n

In this case we want to know the population of elephants when n = 50, so we have:

population(50) = 400000*(0.91)^50 = 3582.033

In 50 years there'll be approximately 3582 elephants.

5 0
4 years ago
1/4x + 6 = 1/2 (x+4)
gavmur [86]

Answer:

Solution x=16

Step-by-step explanation:

7 0
3 years ago
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