Answer:
Ok so 48*3=144 and 144+3=147
Step-by-step explanation:
so 48*3=144+3=147 so that would be your answer I think I did that right
3 tests at 75% each = 3 x 75 = 225 total points
First two tests = 79 + 84 = 163
Third test needs to be at least: 225 - 163 = 62%
So any score less than 62 would get you into trouble.
What is base ten blocks??
So you need to turn 5x^2 -3x -9 into 2x - 3.
Well first you need to take 5x^2 out by subtracting 5x^2 (-5x^2).
Then -3x needs to become 2x by adding 5x (+5x).
Finally -9 needs to become -3 by adding 6 (+6).
Put all the things you did together to make a polynomial.
-5x^2 + 5x + 6
Answer:
-20, -19
Step-by-step explanation:
The average of the two numbers is -39/2 = -19.5. The smaller number is 0.5 less than this, -20, and the larger number is 0.5 more than -19.5, so is -19.
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<em>Comment on the problem and solution</em>
I find that working consecutive integer problems is often simplified by working with the average value of those integers:
- the average of two consecutive odd integers is the even integer between them
- the average of two consecutive even integers is the odd integer between them
- the average of an odd number of integers of the same type (consecutive, consecutive odd, consecutive even) is the middle one
- The average of an even number of consecutive integers is the "half" number between the middle two (as in this problem).