Answer: Lol your in collage I don't believe it anyway the answer is 20 min on the dot
When you factor a quadratic ax² + bx + c, it becomes (x+m)(x+n), where mn = ac, and m+n = b.
In x²+x-6, we want to find two numbers that multiply to -6 and add to 1.
3 and -2 satisfy both of these criteria, so there are our factors.
In x²-7x+10, we want to find two numbers that multiply to 10 and add to -7.
-5 and -2 satisfy both of these criteria, so there are our factors.
The (x-2) cancels and we're left with
15 pencils were left from the box of pencils Amaiya bought.
Step-by-step explanation:
Number of pencils in box = 36
Ratio of used pencils to not used = 7:5
Let,
7x be the total pencils used.
5x be the total pencils not used.
Therefore,
7x+5x=36
Dividing both sides by 12;
Therefore,
Used pencils = 7x = 7*3 = 21
Not used pencils = 5x = 5*3 = 15
15 pencils were left from the box of pencils Amaiya bought.
Keywords: ratio, multiplication
Learn more about ratios at:
#LearnwithBrainly
1.580 converted to deciliters is 1,580
Hope this helps:) Have a Good Evening:), ~Nana~!