The correct answer is A $4.28 x 4 = $19.28
Answer:
40x-17
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
Choose a variable to represent the number to be added to 5 and 3.

"Cross-multiply."

Check: The ratio of 5+3 to 3 + 3 is 8:6, equal to the ratio 4:3.
Answer:
y = 5 - 3x
Step-by-step explanation:
3x + y = 5 ( subtract 3x from both sides )
y = 5 - 3x
The answer is the product of their slope is -1.
First, let's break this down. Perpendicular lines are line with opposite reciprocal slopes. Opposite meaning the inverse sign and reciprocal meaning flipped.
For instance,
If a line had the slope of 5, its inverse would have a slope of -1/5.
Now, if we multiply these numbers together,
5 * -1/5 = -1
The 5's cancel out.
This works for any two perpendicular lines