Answer:
can't see the pic properly
Answer:
<em>4.88</em>
Step-by-step explanation:
Answer:
81 mm
Step-by-step explanation:
Now: 1 mm
In 10 minutes: 3 * 1 mm = 3 mm
In 20 minutes: 3 * 3 mm = 9 mm
In 30 minutes: 3 * 9 mm = 27 mm
In 40 minutes: 3 * 27 mm = 81 mm
Answer: 81 mm
Please see picture above.
Answer: 3a-21
Step-by-step explanation:
Apply distributive property
a=3-3*7
Multiply 3*7=21
Answer: 3a--21
