Option 1
The discriminant of given equation is 116
<em><u>Solution:</u></em>
We have to find the discriminant of given equation
<em><u>Given equation is:</u></em>
To find discriminant,
<em><u>Discriminant is given by:</u></em>
On comparing the given quadratic equation with general quadratic equation
a = 4
b = 6
c = -5
<em><u>Substituting in above formula,</u></em>
Thus discriminant of given equation is 116
Answer:
No solution
Step-by-step explanation:
2y - 3 - 2y = -6
2y - 2y - 3 = -6
-3 = -6
No solution
Answer: A) 82.3
Step-by-step explanation:
Mean= average
To find mean, you add up all the numbers and divide by the number of numbers.
In this case you do:
(81+78+83+89+80+87+78) ÷ 7
81+78+83+89+80+87+78
=576
Now, divided by 7
576 ÷ 7
= 82.2857142857
Round to nearest tenths place
= 82.3
Answer:
The equation is whose solution is
Step-by-step explanation:
Let us call the number of minutes the phone is used over 200 minutes, then we have
<em>(this says monthly bill of $40 plus the cost of phone usage over 200 minutes must equal $58 )</em>
This equation can be used to solve for u as follows: