Answer:
C
Step-by-step explanation:
a=12,b= 9, c=7
x=-9±√9²-4x12x7/2x12
=-9±√81-336/24
=-9±√-225/24
{x=9+í√225/24 or x=9-í√225/24}
Answer:
n math, value is a number signifying the result of a calculation or function. So, in the example above, you could tell your teacher that the value of 5 x 6 is 30 or the value of x + y if x = 6 and y = 3 is 9. Value can also refer to a variable or constant. ... A variable is a letter used to signify an unknown number.
Answer:
D.On the graph, any point (x,y) that satisfies one of the equations must also satisfy the other equation.
Step-by-step explanation:
Answer: $160
Step-by-step explanation:
80%is the same thing as 
Also , since we are using equivalent ratio , we will look for a way to write 200 in order to have equivalent of 100. That is 200 is the same as 100 x 2
Therefore : 80% of a 200 is the same
x 100 x 2
which is the same as 80 x 2
$160
A) 75
b) 25
You have 8 sections and 200 pupils and 200/8 is 25 so each section has 25 pupils
