4x+10 + 3x+5 +y =180
solve for y y=third angle
combine like terms
7x+15+y =180
subtract 7x+15 from each side
y = 180 -(7x+15)
y = 180 -7x-15
y = 165 -7x
The third angle equals 165-7x
Answer:
10text=5weeks
by dividing both sides by5
2text=1week
1week=2text
by multipy both sides by 7
7weeks=14exams
so he will take 14exams in 7 weeks
Answer:
D. The slope of the graph will be zero.
Step-by-step explanation:
Slope of a line is given as .
For a horizontal line, the rise is always equal to zero since the line doesn't rise vertically. This means, .
No matter the value of the run, , when we divide zero by the value of the run, we would always have 0.
Therefore, the slope of an horizontal line would always be zero.
The standard form of the quadratic function is
y=ax∧2+bx+c
In order to determine the unknown parameters we will picked up three points from the given graph.
A(-1,-3) , B(0,-1) and C(1,5)
When we replace B coordinates in the quadratic function we get
-1= 0*a+0*b+c => c=-1 => y=ax∧2+bx-1
After that we will replace A and C coordinates in the quadratic equation and get
-3=a(-1)∧2+b(-1)-1 => -3=a-b-1 => a-b=-2
5=a*1∧2+b*1-1 => 5=a+b-1 => a+b=6
a-b=-2
a+b=6
When we add first equation to the second we get
2a=4 => a=2 When we replace a=2 in the first equation we get b=4
The quadratic function for the given graph is
y = 2x∧2+4x-1
Good luck!!!
Answer:
-1.45
Step-by-step explanation:
-2 14--4/5=-1.45