X^2 - 14x - 7 = 0
<span>x^2 - 14x + 49 - 49 -7= 0 </span>
<span>(x^2 - 14x + 49) - 49 - 7= 0 </span>
<span>(x - 7)^2 - 56 = 0 </span>
<span>i achieved 49 by: </span>
<span>first divide the 14 by 2 and then square it. </span>
<span>14/2= 7 </span>
<span>7^2 = 49</span>
3 weeks
Step-by-step explanation:
To find the number of weeks, we have to equate the amount already saved and planned to save by both each week.
So we can write the expression as,
Let w be the number of weeks.
25 + 5w =16 + 8w
Grouping the terms as,
25 - 16 = 8w - 5w
9 = 3w
Dividing both sides by 3, we will get,
3w/3 = 9/3
w = 3
So number of weeks = 3
Answer:
The awnser is Robi
Step-by-step explanation:
I just took this lesson
A=-26/11 —> you will solve for a by simplifying both sides of the equation, then isolating the variable.
In USA the average I.Q. is 98 while the top one average I.Q. country is Hong Kong.
But the I.Q. distribution is given by a polinomial graph, few people with extremely low I.Q. 40~70, a lot between 70~100, some between 100~120, few between 120~140 and extremely low 140+