You would need to distribute the parenthesis. so the equation will be 12r-12<-12+8r
It would be approximately <span>2,719,980,000 beats in their entire lifetime.</span>
Yuri is wrong because 28-13 = 15 and 15×12=180 so the answer is B
Answer:
x=10, x=-10
Step-by-step explanation:
8|x| + 6 = 86
8|x| = 86 - 6
8|x| = 80
|x| = 80/8
|x| = 10
∴ x=10, x=-10
Remember that the absolute symbol turns all number inside of it positive, so |-10| = 10 and |10|=10 too.
Solve the second equation for 2y.
.. 2y = 9 -x
Substitute that into the first equation.
.. 3x -(9 -x) = 11
.. 4x -9 = 11
.. 4x = 20
.. x = 5
Using our expression for 2y above,
.. 2y = 9 - 5
.. y = 4/2 = 2
The solution is (x, y) = (5, 2).