Answer:
-3a + 4ab
Step-by-step explanation:
-5a + 2a = -3a
-6ab + 10ab = 4ab
Answer:
57
Step-by-step explanation:
Average = total points / total students
95 = (19×97 + x) / 20
1900 = 1843 + x
x = 57
The lowest the last test score can be for the whole class to average a 95 is 57.
Answer:
31.42 m
Step-by-step explanation:
circumference = (pi)d
circumference = 3.14159 * 10 m
circumference = 31.4159 m
Answer: 31.42 m
Answer:
D
Step-by-step explanation:
A is incorrect because 5 cubed is not -125. it is positive 125.
B is incorrect because -3 cubes is not 27, it is negative 27.
C is incorrect because -10 squared is also 100, not only 10 squared.
D is correct because both -12 squared and 12 squared equal 144.