Answer:
I am pretty sure its the first one
Average speed of cyclist = x
average speed of car = 3x
x = 225/5
x = 45km/h
3x = 3(45)
3x = 135km/h
average speed of cyclist = 45km/h
average speed of car = 135km/h
Answer:
pen = $1.20, pencil = $0.50
Step-by-step explanation:
let x = pen
let y = pencil
create system of equations:
3x + 6y = 6.60 [can be simplified to be x + 2y = 2.20]
5x + 8y = 10.00
substitution method:
x = 2.2 - 2y
5(2.2 - 2y) + 8y = 10
11 - 10y + 8y = 10
-2y = -1
y = 1/2
solve for 'x':
3x + 6(1/2) = 6.6
3x + 3 = 6.6
3x = 3.6
x = 1.2
Let's write the equation in standard from
Where,
- m is slope or rate of change
- b is the y-intercept or initial value
<h3>Let's start by finding slope⤵️</h3>
- x1, y1 = 0,12
- x2, y2 = 1,13
<h3>Equation⤵️</h3>
Answer:
y=5,5 1/3
Step-by-step explanation:
hope this helps
