Shelley spent 17 minutes washing dishes. She spent 38 minutes cleaning her room. Explain how you can use mental math to find how
long Shelley spent on the two tasks.
2 answers:
17 + 38 your add both numbers. and you get 55
All you need to do is round up 17 and 38 to 20 and 40 in your head. Solve for that in your head and then subtract 5 from the sum.
20+40=60
60-5+55
You might be interested in
The answer to your question is option b
Use Photomath it would tell you the answer if you take a pic of your question
Answer:
y>-4+2x/5
Step-by-step explanation:
Answer:
Step-by-step explanation:
A square of a monomial is that is
Use properties of exponents:
Note that
Then
So, the monomial is