-6r(4r - 5) - 2(r - 2)
(-6r).4r - 5.(-6r) - 2.r - 2.(-2)
-24r² + 30r - 2r + 4
-24r² + 28r + 4
Answer:
Total bikes and cars are 260
Step-by-step explanation:
<u>Cars</u>: 
<u>Bikes</u>: 
<u>Total</u>: 
Rounding to the nearest ten: 260
35 And just so you know your teacher is a Satanist xd
First join the log4 on the left:
log4( x*(x-3) = log4(-7x+21)
Then x = -7, works: -7*(-10)=70 = -7*(-7)+21
x=-3, 18 = 42, does not work
x=3 0=0 works,
However, when one puts x = -7 in the *original* exression, log4(-7) or log4(-10) do not exist (you know why?). So x= -7 is extraneous.
Now x=3 gives log4(0) on the left and right, which does not exist.
So, C is the answer, both are extraneous. Seem to work but indeed don't work in the *original* equation
Answer:
x=4
Step-by-step explanation:
2x+10=6(x-1)
2x+10=6x-6
10=6x-2x-6
10=4x-6
16=4x
4=x
