Answer:
6ab + -3a2
Step-by-step explanation:
2ab(4a2 + 3ab - 7b2) original problem
2ab(3ab + 4a2 - 7b2) commutative property
2ab(3ab + -3a2) subtract
4 - 7 = -3
6ab + - 3a2 mulitiply
2ab x 3ab = 6ab
and that is you final expression, you can't add the last 2 numbers cause they are not like terms.
Answer:
y = -x + 2
Step-by-step explanation:
The equation of a line in a slope intercept form is given as :
, where m is the gradient and c, y - intercept.
First, let us find the gradient, m of the line that passes through the points, (4,-2) and (-5,7) using the relation ;
By substitution we get
We substitute any of the points and the value of m into y= mx + c to find the value for c.
Adding 4 to both sides.
Hence the equation of the line is :
y = -x +2
Answer:
A sample is random when all subjects have an equal opportunity of being chosen, no discrimination and nothing favoured over the other.
1.IN SOLIDS THERES NO SPACE FOR PARTICLES TO MOVE AROUND
2.LIQUID THERES A LITTLE BIT OF SPACE TO MOVE FREELY
3. GAS HAS ALL SPACES TO MOVE AROUND SINCE ITS NOT PUT TOGETHER
HOPE THIS ANSWER HELPED ALOT
