Answer: 6.5 or 2/13
Step-by-step explanation: add all the numbers together first
2+8+5= 15
then add 1 purple and 1 blue together over 13 (because it says without replacement) so 2/13 then divide = 6.5
I'm pretty sure let me know if i got it wrong
Answer:
Option (B)
Step-by-step explanation:

By applying multiplication property of the matrices,
Therefore, system of equations formed will be,
5x + 2y + z = 16
7x - 5y + 2z = 3
-5x + 3y + z = 12
Option (B) will be the correct option.
Answer:
If
or
, there is only one solution to the given quadratic equation.
Step-by-step explanation:
Given a second order polynomial expressed by the following equation:

This polynomial has roots
such that
, given by the following formulas:



The signal of
determines how many real roots an equation has:
: Two real and different solutions
: One real solution
: No real solutions
In this problem, we have the following second order polynomial:
.
This means that 
It has one solution if




We can simplify by 8

The solution is:
or 
So, if
or
, there is only one solution to the given quadratic equation.
Answer:
10
Step-by-step explanation:
26^2-24^2=100
sqrt of 100 is 10
Answer:
The coefficient is negative because she is traveling downward. -20ft/s represents feet decreasing per second.
She was 350 feet above ground since that is her height at 0 seconds.
It takes her 17.5 seconds to reach the ground.