Answer:
1. a+b 2.a-b. 3. ab 4. a/b
Answer: -35+28n
Step-by-step explanation:
-7*5=-35
-7*-4n=+28n
Answer:
14.5 cm
Step-by-step explanation:
L = 3x - 2
W = x + 3
so the perimeter is 2 lengths + 2 widths = 2(3x-2) + 2(x+3) = 6x-4 + 2x + 6
so 8x + 2 = 46
therefore 8x = 46 - 2
so 8x = 44
so x = 44/8 = 5.5
so if the length is 3x - 2
the length must be 3(5.5) -2
or 16.5 -2 which equals 14.5 centimeters
A ( t ) = 2500 * (1.04) ^t
A ( t ) = 5000
5000 = 2500 * (1.04)^t
( 1.04 ) ^t = 5000 : 2500
(1.04)^t = 2
t = 17.68 ≈ 18
The value of t is 18 years.
