Answer:
2 real solutions
Step-by-step explanation:
y = -x^2 + 3x + 5
First find the the discriminant:
using b² - 4(a)(b)
(3)²- 4(-1)(5)
=9+20
=29
since the discriminant is more than 0, there are 2 real solutions
(-3,2) is the correct answer
Answer: if rounded like 68 18/100%
Step-by-step explanation:
It's A. First of all, one of the only 2 things in math that will NEVER be negative is distances/lengths and times. You have a distance here, so because one of your 2 numbers is negative, you have to take the absolute value of the difference. -8-5 = -11, but the absolute value of that is 11. Put the numbers on a number line and count the units between -8 and +5 and there are 11 units between those 2 numbers.
Answer:
1.5 hours to 525 km
Speed in km/h=
![525 \div 1.5 = 350 \: kmph](https://tex.z-dn.net/?f=525%20%5Cdiv%201.5%20%3D%20350%20%5C%3A%20kmph)
Step-by-step explanation:
XD