Answer:
8. 7.2
9. 6.7
Step-by-step explanation:
Place values:
As each is in a different place value, when we add them neither will affect the other, meaning:
Answer: B 4.39
39,800,000,000 is the correct answer, I believe.
48.
For the rectangle, 4x6 =24
For the triangle, area of the triangle is 1/2 x base x height. So, 24.
Add together is 48
Y=-x+2
2y=x-8
these two lines both go through the point (4,-2)
solve: substitute the y in the second equation with (-x+2):
2(-x+2)=x-8
-2x+4=x-8
add 2x on both sides:
4=3x-8
add 8 on both sides: 12=3x
divide by 3 on both sides: x=4.
find y: y=-x+2=-4+2=-2
the solution is (4,-2)
