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Answer:
First one
2x²+x-1
Step-by-step explanation:
3x²-x²=2x²
x
8-9=-1
2x²+x-1
Answer:
exactly one half the area of the rectangle
Step-by-step explanation:
if you take a cross section then that means that you have put a diagnal line bisecting the rectangle in to two congruent triangles. meaning to find the area of the triangle you take 1/2b*h
meaning you would take the two sides of the triangle you know the length of. take 1/2 times one of them and multiply that answer by the other side length.
Hey, looks like when she doesn't study, she ALWAYS fails. Don't mean to insult though.
Let's see the difference between the three numbers. 63-58=5. 68-63=5.
We know the difference between each assessment she scores is 5 now!!
Let's put it to use.
Although you don't have multiple choice answers...
after 4 assessments(not including first 3), her score will be above 85!!
Including the first 3 assessments, her score would be above 85 after 7 assessments!!
anyways, I hope this helps!!