To find the number you would start by writing out the equation using x as the number. The equation would be x+2x=21. The first step to solve this equation would be to combine like terms, making the equation 3x=21. Finally, you would divide both sides by three, making your answer x=7.
Answer:
$4 a week? darn that's a scam
Step-by-step explanation:
It should take her two and a half weeks to get $10.
Answer:
5 N.
Step-by-step explanation:
Given that,
A force vector M points 3 N in the x-direction and 4 N in the y-direction.
We need to find the magnitude of vector M. The magnitude of the vector when they are perpendicular to each other is given by :

So, the required magnitude of M is 5 N.
Which question do you need help with?
Since 1/2x is the slope, it is proportional. The equation has a constant rise/run.