Answer:
7a + 5
Step-by-step explanation:
Distribute using PEMDAS.
5(3)-(-3)
15- (-3)
15+3 = 18
Answer:
The first 2
Step-by-step explanation:
First expression = -4+30-3 =23
Second expression = 8(10+4)= 112.
The others would lead to a negative number.
Remember negative times negative = positive
Negative times negative times negative = negative
=πr2h
Area of circle
=πr2
=V/h
=100/30
≈3.33cm