Answer:
Marci answered five more questions correctly
Step-by-step explanation:
40/50 questions would result in 80% correct.
So, 90% correct would mean 45/50 questions were answered correctly.
Let 
be the volume of 20% solution, 
the volume of the 60% solution. We want a total volume of 400 mL in the final mixture, so
Each mL of either solution will contribute a corresponding concentration, and in the final mixture we want the 400 mL to have a 40% concentration, which means we should also have
Solve the system and we get 
.
Answer: bsbshshs cuz u shehsjejejeje
Step-by-step explanation:shshdhdhd
Hshsh
Answer:
f(-1) = -1 . . . . matches the last selection
Step-by-step explanation:
When evaluating piecewise functions, the first step is to determine the applicable piece. The argument -1 is in the range of the middle definition, (-2, 1). So, the function value is ...
... (-1)³ = -1
Answer:
a) 7/5
your y - intercept is wrong btw, the x should always be 0 on a y-intercept so it should be (0,7)
y-7 = 7/5 (x)
Step-by-step explanation:
given the x intercept = (-5,0) and the y intercept = (0,7), we can plug these points into the slop equation
y1-y2
____ = m
x1-x2
m = (0-7)/(-5-0) = -7/-5 = 7/5
slop-intercept form is basically point slope form
y-y1 = m(x-x1)
y-7 = 7/5(x-0)
