Answer:
12
Step-by-step explanation:
8 laps•1.5 each lap=12
The answer is C
expand the equation then you will get 3-10x-5=9+3x, simplify you get 13x=-11
I find it convenient to let a graphing calculator help me with factoring. It shows the roots to be -7, 1/5, 2. Hence the factorization will be
.. = (x +7)(5x -1)(x -2)
Ok, so they are all balanced, so each side of the scale thing is equal to the other side.
A. 3 + x = 8
If we subtract 3 from 8, what’s left is 5 for x
x = 5
B. 2y = 12
Both y weights are equal, so dividing 12 by 2 says each y weight is 6.
y = 6
C. 4z = 11
All z weights are equal, so divide 11 by 4 to find the weight of z
z = 2.75
D. 3 4/5 + w = 13 4/5
Subtract 3 4/5 from 13 4/5 to find the weight of w
w = 10
Let me know if you have questions about this.
its the first one 6k - 5
if u were to distribute u need to remember that 6 is negative so it changes -k to a positive 6k and then you would time 4 by -6 which would be -24 but u would just write it like 19 + 6k - 24. then u would add 19 to both sides by 19 which would be like adding 19 to -24 which would equal to -5 so it would equal to 6k - 5.
hope I explained the steps well enough for you.
