Step-by-step explanation:
a) one solution
x=30
b) no solution 0=0
c) no solution
0≠-21
3r-6=-21
3r-6+6=-21+6 (Add 6 to both sides...)
3r=-15
r=-5
3r-6=21
3r-6+6=21+6 (Add 6 to both sides...)
3r=27
r=9
r=-5 or r=9
Answer:
Step-by-step explanation:
count by doubling from 2.... ten times, use your fingers to keep track
2,4,8,16,32,64,128,256,512,1024
add these up
2046
Answer:
0.09 is the same as 9 hundredths
0.9 is the same as 9 tenths
0.009 is the same as 9 thousands
Step-by-step explanation:
Answer:
30%
Step-by-step explanation:
multiply both sides of the first set of data in the table by ten to get 100 as x and 70 as y, which means that it was marked down 30 dollars, or 30%
