Yes y=x^2 is a function because Using the definition of a function, y=x^2 is a function because for every x-value in your domain, you will only get 1 unique y-value. A quick check you can do is to use the vertical line test
Vol=area x Height
length= 3
breadth= X
Height = 2
area must = half of 42 because to get the volume of 42cm cubed, you had to times the area by 2 so
42 devided by 2 is 21 so to find the length you myst do 21 devided by 3 which is 7
so the missing length is 7cm
The only things that will multiply to equal -5 is -5x1 or 5x-1. Of those two you can figure out which one adds to 4. Check each one: -5+1=-4 or 5+-1=4 (don’t forget adding a negative sign is the same subtracting). So the answer must be 5 and -1 * please comment on this if you need help understanding how to add and multiply negatives
Answer:
which ones?
Step-by-step explanation: