Answer:
Step-by-step explanation:
(-3,0)
Answer: You need 36 gallons of water to fill the tank.
Step-by-step explanation:
<u>Find out how much 55 percent of 80 gallons is:</u>
55/100
x/80
55x80=4400/100=44
44 gallons are currently in the tank
<u>Then, subtract that amount from the total:</u>
80-44=36
Answer:
x = 3 or x = -3
Step-by-step explanation:
x^2 -9 =0
x^2 = 9
x = 3 or x = -3
Answer:
It means that the roots of the quadratic equation are real and distinct
Step-by-step explanation:
Here, given the discriminant of the quadratic equation, we want to find out the nature of the solutions.
Mathematically, we can use to determine the nature of the discriminant.
By it’s formula;
D = b^2 - 4ac
We can see that the given discriminant 40 is a positive value. What this means is that the quadratic equation has roots which are real and are distinct
Cos = adjacent / hypotenuse
cos 25° = 4 / AB
cos 25° • AB = 4 / AB • AB
AB cos 25° ÷ cos 25° = 4 ÷ cos 25°
AB = 4/cos 25°
AB = 4.41 (nearest hundredth)
