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3 years ago

The original price p of an item less a discount of 15%

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

7 0

P-.15p this is the expression for cost after discount

and its just .15p for just the discount

cestrela7 [59]3 years ago

5 0

Answer:

p - (0.15p)

Step-by-step explanation:

The original price of an item = p

discount rate = 15% = $\frac{15}{100}$ = 0.15

discount price = 0.15 × p

Discounted price of the item = p-(0.15p)

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In a sewage treatment plant, a large concrete tank initially contains 440,000 liters of liquid and 10,000 kg of fine suspended s

viva [34]

Answer:

$Concentration = 8.26kg/m^3$

Step-by-step explanation:

Given

$V = 440000L$ --- volume of tank

$m = 10,000 kg$ --- solid mass

$r = 40000L/hr$ --- outflow rate

Required

Determine the concentration at the end of 4 hours

First, calculate the amount of liquid that has been replaced at the end of the 4 hours.

$Amount = r * Time$

$Amount = 40000L/hr * 4hr$

$Amount = 40000L * 4$

$Amount = 160000L$

This implies that, over the 4 hours; The tank has 160000 liters of liquid out of 440000 liters were replaced

Calculate the ratio of the liquid replaced.

$Ratio = \frac{Amount}{Volume}$

$Ratio = \frac{160000L}{440000L}$

$Ratio = \frac{16}{44}$

$Ratio = \frac{4}{11}$

Next, calculate the amount of solid left.

$Amount (Solid)= Ratio * m$

$Amount (Solid)= \frac{4}{11} * 10000kg$

$Amount (Solid)= \frac{40000}{11}kg$

$Amount (Solid)= 3636kg$

Lastly, the concentration is calculated as:

$Concentration = \frac{Amount (Solid)}{Volume}$

$Concentration = \frac{3636kg}{440000L}$

Convert L to cubic meters

$Concentration = \frac{3636kg}{440000* 0.001m^3}$

$Concentration = \frac{3636kg}{440m^3}$

$Concentration = 8.26kg/m^3$

3 0

3 years ago

3x + (x-8) = 23 how do I solve it

Ostrovityanka [42]

<span>3x + (x-8) = 23

Combine like terms first. You can combine 3x and x because they have the same variable.

4x - 8 = 23
Now add 8 to both sides.
4x = 31

Last step is to divide both sides by 4 to isolate the x.
4/4x = 31/4

x = 7.75 is the answer.</span>

4 0

3 years ago

1+1=<br> I need help please I am just seeing if this app really work

STatiana [176]

Answer:

1+1=2

Step-by-step explanation:

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Lee needed to make drapes the length from the floor to the top of the window. The wall beneath the window had the height of 2 2/

Tatiana [17]

Since drapes have to be covered all over the window and the beneath of the window, both lengths have to be added.

(2 2/3) + ( 2 3/4)
(8/3) + (11/4)
(32+33)/12
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3 years ago

There was a bag of counters. 45 were large! For every large counters 3/5 were small! The green was 300% than yellow, there were

madreJ [45]

Answer:

12 is the correct answer

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