Answer:
Step-by-step explanation:
Linear equations are written as y = C1x + C2 where C1 & C2 are
constants. They are graphed by plugging in numbers for y or x and solve
for the other. For example if you have an equation y = 3x + 6 you then
for y = 1 you have 1 = 3x + 6 -> x = -5/3 you then take the two
coordinates (-5/3,1) and plot the point do this for further numbers and
connect the points with a straight line. Shifting the graph up or down
will change the value of C2 and shifting the graph left or right will
change C1.
[] Similar
-> The triangles are similar because they were "mirrored" by the...
[] SSS
-> ... by the SSS similarity theorem, the sides are...
[] Proportional
-> ... the sides are proportional.
[] AB/AC
-> Since the sides are proportional, dividing corresponding sides will leave us with the same number
[] For the last two I think I am missing some information as I do not have any numbers and know where they got 85 from.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Answer:
f(2) = 12
f(x) = 7, x = -3, 1
Step-by-step explanation:
<u>a)</u>
plug in x as 2
f(x) = 2^2 + 2(2) + 4
f(x) = 4 + 4 + 4
f(x) = 12
<u>b)</u>
replace f(x) with 7
7 = x^2 + 2x + 4
x^2 + 2x - 3 (move 7 to other side)
Factor
ac: -3x^2
b: 2x
split b into 3x, -x
(x^2 -x) + (3x - 3)
↓ ↓
x(x-1) + 3(x-1)
Factor: (x-1)(x+3) = 0
Solve using Zero Product Property:
x - 1 = 0, x + 3 = 0
x = 1, x = -3
Yh I think the missing number will be 6 because they are equivalent to 1:2
