Answer:
3
Step-by-step explanation:
We know x = -2, so we can substitute -2 in for x
3x^2- 9
3*-2^2-9
Solve the exponent first (PEMDAS)
3*4-9
Multiply next
12-9
Subtract
3
Answer:
A)7.5
Step-by-step explanation:
you divide 62 by 4 and you get A
(9,-5) times 2.5 is (22.5,-12.5)
The answer is (22.5,-12.5)
Hope this helps!
Answer:
Step-by-step explanation:
Given that the number of males in the classroom is three more than twice the number of females.
the total number of students is 57
Let x be the no of males then no of females = 
Also we have 3 more than twice no of females as

This equals x

No of males = 39, no of females = 18
12 x g + 1
Hope this help you