Answer:
12a^2 - 9a + 5
Step-by-step explanation:
(5a^2 - 6a - 4) - (-7a^2 + 3a - 9)
5a^2 + 7a^2 = 12a^2
-6a - 3a = -9a
-4 + 9 = 5
12a^2 - 9a + 5
Answer:
170
Step-by-step explanation:
There are three times as many teaching assistants as research assistants. Find the number of research assistants employed by the university. Hence the number of research assistants is 170.
Answer:
The 2nd and 3rd boxes are right, that is :-
* 2b is a term
and
* 9 is a constant
Answer:
Yes
Step-by-step explanation:
9 x 3 - (0.6/0.2) Simplify the parentheses
9 x 3 - 3 Multiply 9 by 3
27 - 3 Subtract
24
<span>The perimeter of a rectangle is the distance around the outside of the rectangle. A rectangle has four sides with opposite sides being congruent. The formula for finding the perimeter is Side A + Side B + Side A + Side B. This could also be stated as 2*Side A + 2*Side B or 2*(Side A + Side B)
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