Wait what’s the question?
Let x be the score of the 3rd quiz,, then the average score will be:
(83+91+x)/3, which = (174+x)/3. but this average should be greater or equal to 85 and smaller or equal to 90:
85 ≤ (174+x)/3 ≤ 90
1st multiply all terms with 3 → 255 ≤(174+x) ≤ 270
2nd subtract 173 from all terms → 255-174 ≤174-174+x ≤270-174
81 ≤ x ≤ 96
Answer:
500 1/8" (500.125 inches)
Answer: False true false last question i dont understand
Step-by-step explanation:
Answer:
-3x^2+13x-5
Step-by-step explanation:
you're basically just combining the like terms
3x^2+<u>7x</u>-4-6x^2+<u>6x</u>-1
-3x^2=13x<u>-4-1</u>
-3x^2+13x-5
