Answer:
Step-by-step explanation: Graphs are used for many things like: organisation, easier,plotting ideas
Answer:
True
Step-by-step explanation:
Each time a spinner is spun, there is an equal chance that each result will occur, thus each of these spins are independent.
75 miles/hr* (45/60) hours=56.25. Initial position is -12.5. Add -12.5 to 56.25 which results in 43.75 miles due north.
Find two points where the line intersects with an x and y value that are whole numbers.
The line crosses (0,3) and (-2,-1)
The slope is the change in Y divided by the change in x.
The change in Y is -1 - 3 = -4
The change in x is -2 - 0 = -2
The slope becomes -4 / -2 which simplifies to 2
The answer is D.
3) x² - 121 = 0
x² = 121
x' = +√121
x' = 11
_______________
x'' = - √121
x'' = -11
Solution ⇒ S{-11 ; 11 } or (x-11)(x+11)
4) 4x² + 144 = 0
4x² = -144
x² = -144 / 4
x² = -36
x = √-36
No solution ⇒ S = ∅
5) z²+10z+21 = 0
Δ = 10² - 4(1)(21)
Δ = 100 - 84
Δ = 16
x' = (-10+4) / 2 = -6/2 = -3
x'' = (-10-4) / 2 = -14/2 = -7
Solution ⇒ S{ -7 ; -3} or (x+3)(x+7)
