Answer:
he's not correct.
-15 = m
Step-by-step explanation:
-16 = -1 + m
-16 + 1 = m
-15 = m
Why does -1 became +1 , It is because you are adding 1 on both side so that we can cancel out the -1 and it will rest the m.
like this;
+1 -16 = -1 + m +1
-16 + 1 = (0 or nothing) + m
-15 = m
Answer:
(-9x^2-2x)-(-9x^2-3x)
Step-by-step explanation:
-9x^2 + 9x^2 - 2x + 3x
= 0x^2 + 1x
= 1x
Mark me as brainliest
Hope this helps!!!
Answer:
<em>$40 </em>will be the total cost of the ribbon.
Step-by-step explanation:
To find the cost of ribbon to be put on the edges of rectangular banner, we need to:
1. Find the perimeter of the rectangle.
2. Multiply the perimeter with the per foot cost to find the total cost.
Let us find the perimeter first:
Perimeter of a rectangle is given as:

Here, the dimensions of rectangle are 4ft by 6ft.
So, perimeter = 
It is given that per foot cost is $2.
Total cost of the ribbon = 
<em>$40 </em>will be the total cost of the ribbon.
Sorry but your question is unfinished
Its 100 because its not rounded to the nearest whole like 200 because its less than 50 so it would round down