Answer:
Step-by-step explanation:
x/20=10/5
x=10(20)/5
x=200/5
x=40
Answer:
A
Step-by-step explanation:
4x+3y=2
3y = - 4x + 2
y = - 4x / 3 + 2/3
Answer:

Step-by-step explanation:
Answer:
3(3+x)=9+3x, or B
Step-by-step explanation:
From the diagram, we can see that there are 3 rows of one x and 3 ones each.
Therefore, we can make the equation 3(3+x)
Then we could either count the blocks out to get 9+3x or just solve the above equation.
So, the answer would be 3(3+x)=9+3x, or B
Answer:

Step-by-step explanation:
We want to find equation of a circle with center (-4,6) and radius 9cm.
The equation of a circle with center (h,k) and radius
units is given by;

We substitute the radius and the center to obtain;

The required equation is:
