Answer:
a=2,b=-3 and c=-2
Step-by-step explanation:
(2x+1)(x-2)=0
2x²-4x+x-2=0
2x²-3x-2=0
Comparing it with the standard form of quadratic equation ax²+bx+c=0 we get
a=2,b=-3 and c=-2
Answer: Yes, the answers in the blanks are correct.
Step-by-step explanation: The easiest way to answer this question is to plot the points onto a graph. The point (0,10) is right on the y-axis, so that would be the y-intercept. The best way to find the slope is the rise over run method. The slope 2/5 is correct because it "rises" by 2 units and "runs" by 5 units.
First, it would be helpful to find out how many teachers there are at the school.
2470 students x (1 teacher/26 students)=95 teachers
To find the number of teachers needed, just use the ideal ratio:
2470 students x (1 teacher/19 students)=130 teachers
So to reduce this ratio to 19:1, the school needs 130 teachers. To know how many new teachers the school needs, just subtract the ideal from the current amount.
130-95=35 new teachers needed
The answer is j+5-2
because sum means to add
