Step-by-step explanation:
7x+10 - (x+2)^2
7x+10 - (x^2 + 2x + 4)
7x+ 10 - x^2 - 2x - 4
5x + 6 - x^2
then if u have to find the value of x then put the value of a = 1,b = 5,c = 6 in quadratic formula (-b + under root b^2 - 4ac / 2a) or (- b - under root b^2 - 4ac / 2a) it will gives the value of x...
HOPE it u..!!
edit - do let me knw that it's right or not..!!
You have to distribute the 3.
3*4x , 3*-5
12x - 15
Hope this helps :)
Okay since the numbers increased, these are the steps to find the percentage.
1: find the difference between the 2 numbers. So 525- 465 = ?
2: divide the answer you got in # 1 by the original number which is 465.
3: multiply the answer you got in number 2 by 100.
4: add a percent sign at the end of your answer in #3 and there ya go. (:
If Jim drives 25miles/hr and he is 30 miles away you would need to solve for the number of hours it would take to get there. So, you can set up a proportion: 25miles/1hr=30miles/xhr cross multiply to get 25x=30 divide both sides by 25 and your answer is 1.2 hours.
