Answer:
x1=(7-√65)/2
x2=(7+√65)/2
Step-by-step explanation:
x^2=7x+4
x^2-7x-4=0
D=(-7)^2-4*1*(-4)=49+16=65
x1=(-(-7)-√D)/(2*1)=(7-√65)/2
x2=(-(-7)+√D)/(2*1)=(7+√65)/2
Answer:
im not shere but i think its D on ege
Step-by-step explanation:
Answer:
The angle made by line with positive x axis is more than 90°
Step-by-step explanation:
A line is represented in slope intercept form as
y=mx+c
Where m is called the slope of the line and c is called the y intercept .
Here by slope we means the tangent of the angle , the line makes with the positive x axis .
Now in the case when the coefficient of x is negative , that means the tangent of the angle which line makes with the positive direction of x axis is negative
or
tan = negative
> 90
that means our line makes an obtuse angle that is more than 90° with the positive x axis.
Answer:
False.
Step-by-step explanation:
We are asked if it is true or false that any percentage point for a score distribution must have a value equal to one of the scores.
In this case we have to:
False.
Because for example, many times the median (or 50th percentile) is the mean of the inputs in middle 2, and may not equal any data point.
Answer:
This money will last for 14 weeks.
Step-by-step explanation:
Andy has total 550 dollars is his account. Out of $ 550 dollars he can spend 350 dollars (550 - 200) as he wants to have at least $200 in the account by the end of the summer. So how many week will his money last will be calculated as follow.
Duration = 350/ 25 = 14 weeks