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3 years ago

i need help please i have alot of problems on math and i was hoping you all can help me and explain it to me

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

8 0

You want to break the shape apart
the square would be 2•2 so 4
the triangle on the right would be .5•2•6 so 6
the triangle on the left would be .5•2•2 so 2
and 6+4+2 is 12
so 12 units ^2

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What are the x-intercepts of the function f(x) = -2x2 – 3x + 20?

Murljashka [212]

Answer:

the interception of the function will be equals -2x+5 And x-4

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2 years ago

Demi has 221 songs on her phone. The songs take up 884 megabytes of storage . Each song takes up same amount of space . How many

sveticcg [70]

Answer:

540 megabytes

Step-by-step explanation:

We will first need to find out how much space a singular song will take up. We will do this by the storage taken up (884) by the number of songs she has:

884 / 221 = 4 mb taken up per song

Then we want to find out how many megabytes 135 of these songs take up, so we will multiply the mb taken up per song (4) by the number of songs we want to find (135):

4 x 135 = 540 megabytes

Edit: made a mistake in my original answer, apologies!

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2 years ago

If x = 29 but y = x + x - 2x, how can x be represented algebraically through the context of polynomial division

ryzh [129]

Answer:

y will equal 29 + 29 - 2(29) which equals 0

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hope this helps! <3

7 0

1 year ago

What is the value of x? 0.9(x+1.4)−2.3+0.1x=1.6

mash [69]

Expand

Simplify 0.9x + 1.26 - 2.3 + 0.1 * x to x - 1.04

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5 0

2 years ago

Read 2 more answers

A scuba diving company currently charges $100per dive. On average, there are 30 customers per day. The company performed a study

Semenov [28]

A. Total Revenue (R) is equal to price per dive (P) multiplied by number of customers (C). We can write $R=PC$ .

Per price increase is $20. So four price increase is $ $20*4=$80$ . Hence, price per dive is 100+80=$180.

Also per price increase, 2 customers are reduced from 30. For 4 price increases, $4*2=8$ customers are reduced. Hence, total customers is $30-8=22$ .

So Total Revenue is:

$R=180*22=3960$

B. Each price increase is 20. So x price increase is 20x. Hence, new price per dive would be equal to the sum of 100 and 20x.

Also per price increase, customers decrease by 2. So per x price increases, the customer decrease is 2x. Hence, new number of customers is the difference of 30 and 2x.

Therefor we can write the quadratic equation for total revenue as the new price times the new number of customers.

$R=(100+2x)(30-2x)=-40x^{2}+400x+3000$

C. We are looking for the point (x) at which the equation modeled in part (B) gives a maximum value of revenue (y). That x value is given as $x=-\frac{b}{2a}$ , where a is the coefficient of $x^{2}$ and b is the coefficient of x. So we have,

$x=-\frac{b}{2a}=- \frac{400}{(2)(-40)}=5$

That means, the greatest revenue is achieved after 5 price increases. Each price increase was 20, so 5 price increase would be $5*20=100$ . So the price that gives the greatest revenue is $100+100=200$ .

ANSWERS:

A. $3960

B. $R=-40x^{2}+400x+3000$

C. $200

4 0

3 years ago