Answer:
x = 20
Step-by-step explanation:
Write and solve an equation of ratios, as follows:
1 3/4 14
------------ = --------
2 1/2 x
where x is the unknown number.
Converting the mixed numbers to improper fractions, we get:
7/4 14
------ = -----
5/2 x
Here there are two numerators and two denominators. Multiplying all four quantities by 4 will remove some of the fractions:
7 56
------ = -------
10 4x
Cross multiplying, we get:
28 x = 560, or x = 20
We know: The sum of the angles of each quadrilateral is 360°.
Therefore we have equation:
x + 3x + 4x + 2x = 360
10x = 360 |:10
x = 36
81000 would be your answer
To find how much the bike is reduced by, use multiplication.
Since you already know the bike is reduced by 30%, multiply that to the cost, $200.
200*30%=200*0.3=60
The bike is reduced by $60.
The bike now costs 200-60= $140
Hope this helps!
A>2 will make n a positive number.
