Question

Evaluate 2a^2 - 10 ÷ b for a = 3 and b = 5.

Answer 1

I got the answer 16, can you tell me if I'm right

Answer 2

its a little bit unclear. is it (2a^2-10)/b?

Answer 3

yes

Answer 4

if so the answer is 1.6

Answer 5

How did you get that

Answer 6

you need to do PEMDS, dont forget that.

Answer 7

(2a^2 - 10) / b
a = 3 and b = 5
now we will sub
(2(3^2) - 10) / 5
(2(9) - 10) / 5
(18 - 10) / 5
8/5 = 1 3/5 or 1.6

Answer 8

none of the equation is in parentheses. I think you have to dived 10/5 first

Answer 9

oh...I thought you said there was parenthesis...let me try this again..
2a^2 - 10/5
2(3^2) - 10/5
2(9) - 2
18 - 2 = 16

Answer 10

If there is no parenthesis, then you are correct