Answer:
c = 10
Step-by-step explanation:
Using Pythagoras' theorem
The square on the hypotenuse of a right triangle is equal to the sum of the squares on the other 2 sides, that is
c² = a² + b² ← substitute values
c² = 6² + 8² = 36 + 64 = 100 ( take the square root of both sides )
c = 
= 10
An equivalent ratio is the same as an equivalent fraction. So if you need an equivalent ratio for 2/3 you have to multiply each number by the number you are multiplying by!
Answer:
$161.50
Step-by-step explanation:
the revenue for an item of $85 with a 90% markup is $161.50
12x+9= 45, x =3 3 is the answer
Answer:
Rs 253.13
Step-by-step explanation:
The item cost him x.
Selling at a profit of 20% means he sold it for 1.2x.
Selling at a loss of 12% means that he sold it for 0.88x.
1.2x - 81 = 0.88x
1.2x - 0.88x = 81
0.32x = 81
x = 253.13
