A student pays for 8.9 pounds of apples with a $10 bill. How much change does the student receive?

Mathematics

1 answer:

Doss [256]3 years ago

5 0

You take 10 - 8.9 = $1.10

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I need help please it’s due tomorrow.......

Sholpan [36]

Let
x-------> the width of the rectangular area
y------> the length of the rectangular area

we know that
y=x+15------> equation 1
perimeter of a rectangle=2*[x+y]
2x+2y <= 150-------> equation 2

substitute 1 in 2
2x+2*[x+15] <=150--------> 2x+2x+30 <=150----> 4x <=150-30
4x <= 120---------> x <= 30
the width of the rectangular area is at most 30 ft
y=x+15
for x=30
y=30+15------> y=45
the length of the rectangular area is at most 45 ft

see the attached figure
the solution is<span> the shaded area</span>

4 0

2 years ago

Jane orders cheese pizza from a pizza restaurant that charges $8 per pizza , Jane cost, in dollars, is a function of the numbers

neonofarm [45]

search des mos on goo gle click graphing calculator type in the equation y =-8x+45 and then copy the graph, I suggest doing one digits and also you didn't send the full question

She can get 5 pizzas using all her money

Finding Maxmium She Can Get

8.00*n ≤ 45.00

n ≤ 45/8 = 5.625

Jane can order at most 5 pizzas.

5 0

3 years ago

When you solve using the quadratic formula and you get to

kvasek [131]

Answer:

$\boxed{if \: b= - 2 : {b}^{2} = { (- 2)}^{2} = 4}$

8 0

2 years ago

-5m-3m+6-3 = -13 Need help

miv72 [106K]

Answer: m=2

Step-by-step explanation:

-5m-3m+6-3=-13

-8m+3=-13

-3 -3

-8m/-8 = -16/-8

m=2

6 0

3 years ago

A cylindrical tank holds 20,000 gallons of water, which can be drained from the bottom of the tank in 20 minutes. The function g

IgorLugansk [536]

You didn't include the function.

If the function is, V = 20,000 (1 - t/20)^2, as you can see, for t = 20, V = 0

Then I am going to show you the work with that function, and you can use the same procedure with your own fucntion.

The rate of change of the volume is the derivative of the function with respect to the time.

[dV/dt] = 20,000 *2 [1 -t/20] * [-1/20] = - 2000 [1 - t/20] = 2000[t/20 - 1]

At t = 3

dV/dt = 2000[3/20 - 1] = -1700 gallons / min

The negative sign mean decreasing.

The answer is - 1700 gallons / min

Now, for the same function, if the time is t = 2, you would obtain one of the results of the list of options.

dV/dt = 20,000 [2/20 - 1] = -1800 gallons/minute, which is the option D of the list.

3 0

3 years ago