Answer:
See below for answers
Step-by-step explanation:
4) If the lengths of the triangular truss were uneven, it could collapse, thus the perimeter is needed
5) Perimeter is the total length of all the side lengths, thus 13+13+20=46 feet is the perimeter of the truss
6) The formula, like I mentioned in #5, is P=a+b+c
Answer:
Infinitely many solutions
Step-by-step explanation:
6x + 10 = 2(3x + 5)
Distribute;
6x + 10 = 6x + 10
Infinitely many solutions
Answer:
Option 2: 2x + 2 = 72
Step-by-step explanation:
First odd: x
Next odd: x + 2
x + (x + 2) = 72
2x + 2 = 72
Because the difference between two consecutive odd numbers is 2.
e.g 3 and 5
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
