15 miles cause you do 5 times 3 and you get 15 miles
Answer:
x= -1
Step-by-step explanation:
4x+3=x
we subtract x to both sides of the equation:
4x -x +3 = x-x
we have:
3x +3 = 0
we subtract 3 to both sides of the equation:
3x +3 -3 = -3
3x = -3
we divide by 3 both sides of the equation
3x/3 = -3/3
x= -1
we test the result in the original equation:
4x+3=x
4*(-1) + 3 = -1
-4 +3 = -1
-1 = -1
so finally x= -1
So if the dress is 25% off, that means you are paying 75% of the original price.
sale price = original price x 0.75
225 = original price x 0.75
divide both sides by 0.75 to isolate original price
225/0.75 = (original price x 0.75)/0.75
300 = original price
0.8 is a rational number because it doesn't continually use the same number over and over.
Answer:
140
Step-by-step explanation:
we know that this year the sports club has 25% less memeber, so if last year the members where 100% this year there are only 75%
and that 75% is equal to 105 members
we can represent the information that we are given in a table:
memebers percentage
105 ⇒ 75%
since last summer there were the 100% of member we can represent the number of members from last summer with 'x', and the table now is:
memebers percentage
105 ⇒ 75%
x ⇒ 100%
and we use rule of three to solve this problem: multiply cross quantities (105 by 100) and divide by the remaining amount:
x = 105*100/75
x = 140
Last summer the sports club had 140 members
