10x^4+ 7x^3-12x^2
= x^2(10x^2+ 7x- 12)
= x^2(10x^2 -8x+ 15x -12)
= x^2[ 2x(5x-4)+ 3(5x-4)]
= x^2(5x-4)(2x+3)
x^2(5x-4)(2x+3)= 0
⇒ x= 0
or 5x-4= 0
or 2x+3= 0
⇒ x= 0
or x= 4/5
or x= -3/2
The final answer is x= 0 or x= 4/5 or x= -3/2~
The rate of this would be 11 sit ups because 55 divided by 5 would give you the answer 11
The answer to this is y= 5.
Answer:
She could work 8 hours bagging or 10 hours babysitting.
Step-by-step explanation:
Also, she could work:
Babysitting(hours) Bagging(hours)
1 8
2 7
3 6
4 5
5 4
6 4
7 3
8 2
9 1
Answer:
x=4.5
Step-by-step explanation:
so when y=20 and x=2, y is 10 times x so, <u>45/10=4.5</u>