Answer:It's 12 and 43
Step-by-step explanation:
Answer:
x=8a
Step-by-step explanation:
(3/a) x - 4 = 20
add 4 to both sides
(3/a) x = 24
Divide by 3/a
x = 24 / (3/a)
Use KCF (keep change flip)
x = (24/1) x (a/3)
x = 24a / 3
simplify
x = 8a
Answer:
The average rate of change is -2
Step-by-step explanation:
we know that
To find out the average rate of change, we divide the change in the output value by the change in the input value.
In a linear function the average rate of change is a constant and is equal to the slope of the function
The linear function in slope intercept form is equal to
![f(x)=mx+b](https://tex.z-dn.net/?f=f%28x%29%3Dmx%2Bb)
where
m is the slope or unit rate of the linear function
b is the y-intercept or initial value of the linear function
In this problem we have
![f(x)=-2x+70](https://tex.z-dn.net/?f=f%28x%29%3D-2x%2B70)
so
![m=-2\\b=70](https://tex.z-dn.net/?f=m%3D-2%5C%5Cb%3D70)
therefore
The average rate of change is -2
Answer:1
Step-by-step explanation:
Y=12+2x
y represents the number of pieces she now knows, x represents the number of weeks she has taken lessons, 2 is the slope (the number of pieces she'll learn each week), and 12 is the y intercept (the number of pieces she knew before taking lessons).
To solve the equation for 11 weeks, we replace x with 11.
2×11+12= 24
y=24