A flower arrangement was marked down 12.5%.if thee flowers originally cost $20, what is the amount of the discount

A computer training institute has 625 students that are paying a course fee of $400. Their research shows that for every $20 red

Anastasy [175]

1.
If no changes are made, the school has a revenue of :

625*400$/student=250,000$

2.
Assume that the school decides to reduce n*20$.

This means that there will be an increase of 50n students.

Thus there are 625 + 50n students, each paying 400-20n dollars.

The revenue is:

(625 + 50n)*(400-20n)=12.5(50+n)*20(20-n)=250(n+50)(20-n)

3.

check the options that we have,

a fee of $380 means that n=1, thus

250(n+50)(20-n)=250(1+50)(20-1)=242,250 ($)

a fee of $320 means that n=4, thus

250(n+50)(20-n)=250(4+50)(20-4)=216,000 ($)

the other options cannot be considered since neither 400-275, nor 400-325 are multiples of 20.

Conclusion, neither of the possible choices should be applied, since they will reduce the revenue.

6 0

4 years ago

The perimeter of the base of a right square pyramid is 48 cm. The height of the pyramid is 12 cm. What is the volume of the pyra

Dimas [21]

V = (1/3)(b^2)(h)
<span>b = 48/4 = 12cm </span>
<span>h = 12cm </span>
<span>V = (1/3)(144)(12) = 576cm^3 (third choice) </span>

<span>3) </span>
<span>V = (pi)(r^2)(h) </span>
<span>V = (3.14)(64)(8) = 1608cm^3 (not one of the choices but I'm certain that this calculation is correct) </span>

8 0

4 years ago

Which property of addition is shown below? a bi c di = a c bi di identity property associative property commutative property inv

marin [14]

The commutative property of addition is shown here a+bi+c+di = a+c+bi+di which is the correct answer.

<h3 /><h3>What is commutative property?</h3>

The commutative property states that an expression of the form (A + B) can be solved as (B + A) by an addition operation that does not change the result.

This property applies to multiplication also.

We have the given expression:

a+bi+c+di = a+c+bi+di

We have to identify the property of addition in the above expression.

Since we can say here that (bi+c) is expressed as (c+bi).

The commutative property of addition states that the numbers can be added in any order.

Mathematically, it states that a+b = b+a.

Here, (bi+c) can be replaced by (c+bi), whether 'b' is added to 'ci' or 'ci' is added to 'b', the result is always the same.

Therefore, the commutative property of addition is the correct answer

Learn more about the commutative property;

brainly.com/question/27325958

6 0

2 years ago

Determine the dot product between the two vectors. u=< 5,3 > and v =< 12,4 >

andrey2020 [161]

Answer:

v . u = < v1 , v2 > . <u1 , u2> = v1 u1 + v2 u2

Step-by-step explanation:

5 0

3 years ago

Round to the underlined place

konstantin123 [22]

Answer:

93.84

Step-by-step explanation:

93.8<u>3</u>93 take the number next to it and round up if its 5 more or keep it the same if its 4 or less

so 9 is 5 or more and the 3 goes up the 8 stays the same

also the place is the hundredths place :)

I hope this helps :)

7 0

4 years ago