All categories

3 years ago

A shopper paid $100 for a coat that was on sale for 20%. How much was the original price of the coat?

Mathematics

1 answer:

Paraphin [41]3 years ago

6 0

$125

When you are paying $100, you are paying 80% of the full price

Therefore you do 100/80=1.25

1.25*100=125

You might be interested in

A collection of nickels and dimes is worth $9.45. If the number of dimes is doubled, the value is

eduard

Answer:

The number of nickels is 45 and the number of dimes is 72.

Step-by-step explanation:

Let

x ----> number of nickels

y ----> number of dimes

Remember that

$1\ nickel=\$0.05$

$1\ dime=\$0.10$

$0.05x+0.10y=9.45$ ------> equation A

$0.05x+0.10(2y)=16.65$

$0.05x+0.20y=16.65$ ------> equation B

Solve the system by substitution

we have

$0.05x+0.10y=9.45$ ------> equation A

$0.05x+0.20y=16.65$ ------> equation B

Multiply both equations by 100 both sides

$5x+10y=945$ ----> $5x=945-10y$ --> equation C

$5x+20y=1,665$ ----> equation D

substitute equation C in equation D

$(945-10y)+20y=1,665$

solve for y

$945+10y=1,665$

$10y=1,665-945$

$10y=720$

$y=72\ dimes$

Find the value of x

$5x=945-10y$

$5x=945-10(72)$

$5x=225$

$x=45\ nickels$

Alternative Method

Solve the system by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

the solution is the point (45,72)

therefore

The number of nickels is 45 and the number of dimes is 72.

7 0

3 years ago

3.f(-4)-3.g(-2) please help me with this problem

seraphim [82]

Question:
3.f(-4)-3.g(-2) please help me with this problem

Answer:
-12f + 6g

Step by step explanation:

8 0

3 years ago

What is the square root of 24? show your steps.

yawa3891 [41]

Step-by-step explanation:

√24= √(2×2×2×3)

=2√2×3

=2√6

8 0

2 years ago

Questions: 1) 2x2 + 5x + 2 = 0

xz_007 [3.2K]

Answer:

x = -1/2 and -2

Step-by-step explanation:

Solve for x: Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Using the quadratic formula: Solve the equation for x by finding a, b, and c of the quadratic then applying the quadratic formula.

7 0

3 years ago

Read 2 more answers

The function f is defined by

Pepsi [2]

Hope this helps :)

Photo attached.

5 0

3 years ago

Read 2 more answers