Given expression -
Adding 3 to both sides ,
Dividing by 2 on both sides ,
Answer:
Step-by-step explanation:
Givens
Length = a
Width = a + 3
Formulas
P = 2L + 2w
Area = L * w
Solution
Perimeter
P = 2L + 2w
P = 2*a + 2(a + 3) Remove the Brackets
p = 2a + 2a + 6 Combine
<u><em>P = 4a + 6</em></u>
Area
Area = L * w
Area = a (a + 3)
<u><em>Area = a^2 + 3a</em></u>
Dividing 20x - 16xy by 4x gives 5 - 4y
so the product is
4x(5 - 4y)
Answer:
6. 2
7. 13
8. 10
9. -29.78
Step-by-step explanation:
6. 3(1) - 1
3-1
2
7. -2(-2)+9
4 + 9
13
8. 2(3) + 4
6 + 4
10
9. 3.8(-7.6) - .9
-28.88 - .9
-29.78