5n+9=2n
5n+9−2n=2n−2n
3n+9=0
3n+9−9=0−9
3n=−9
3n/3=−9/3
n=−3
Answer:
The answer is C It takes Ted 16 hours to knit a scarf.
Step-by-step explanation:
I got it on Khan.
Answer:
18
Step-by-step explanation:
20/2 + 8
Divide the numerator and denominator by 2
20 / 2
2 / 2
Divide the numbers
10
2 / 2
=
10 / 1
Any expression divided by 1 remains the same
10 + 8 = 18
54 gallons
Step-by-step explanation:
Turn each number into the product of it's prime factors.
32=16x2=2x2x2x2x2=2^5
48=24*2=6x4x2=2x3x2x2x2
Pick the highest number that occurs. In this case it is 2. Now we have to see how many times it appears in both. It appears 5 times in 32 and 4 times in 48. 4 is the highest number of times it appears in the numbers so:
2^4=2x2x2x2=16
The Greatest Common Factor (GCF) of 32 and 48 is 16.