Answer:
23x^2
Step-by-step explanation:
When adding variables, if they have the same exponent then all that needs to be done is add the constants. In this case both have x^2 so the answer is 23x^2. Hope this helps! :)
Answer:
y = 5x^2-5x-30
Step-by-step explanation:
A parabola with x-intercepts at (-2,0) and (3,0) has the equation
y = a(x+2)(x-3)
where a is to be determined.
We know that it passes through the point (0,-30), so
-30 = a(0+2)(0-3) = -6a
Therefore solve for a to get
a = 5
y = 5(x+2)(x-3)
y = 5(x^2-x+6)
y = 5x^2-5x-30
Answer:
$79 total earnings
Step-by-step explanation:
Here, earnings = (hourly rate)(number of hours):
= ($8.30/hr)(6 hrs) + ($7.30/hr)(4 hrs), or
Total earnings = $49.80 + $29.20
" " = $79.00
Here you go :) I sent the work in the picture below
We call the ratio between two directly proportional quantities the constant of proportionality. When these two quantities may increase or decrease, the constant proportionality always remains the same