Answer:

Step-by-step explanation:
Given

Required
Solve
Open brackets


Collect like terms


Answer:
25%
Step-by-step explanation:
1 dozen = 12
3 out of 12
3/12
Simplify
1/4
Multiply top and bottom by 25 to get a denominator of 100
25/100
25%
83/8+85/4+145/9
83/8+(2/2)(85/4)+145/9
83/8+340/8+145/9
423/8+145/9
(9/9)(423/8)+(8/8)(145/9)
3807/72+1160/72
<em><u>4967/72</u></em>
The rate is 5 seconds of travel time for the sound of thunder per every mile.
Answer:
C. as t^2+t +t =t^4 + 9^2-3+3=9^2 = t^3 - 81 we are forced to -81 as we would be required to move t^3 first to the other side before -81 therefore if t is a perfect square of 4 and 9 is a perfect square too we can use. Since both terms are perfect squares, factor using the difference of squares formula,
a2−b2=(a+b)(a−b)where a=xand b=9.(x+9)(x−9)
Step-by-step explanation: