Answer:
90
Step-by-step explanation:
Be sure to use PEMDAS. Begin with parentheses, the move to multiplication, then adding.
20 + 3(7 + 4) + 5 + 2(7+9)
20 + 3(11) + 5 + 2(16)
20 + 33 + 5 + 32
You can add those final four numbers in any order you want, to get a sum of 90.
Answer:
The side length of the each areas are (a) 4 cm (b) 12 cm (c) 6 cm (d) 7 cm (e) 8 cm (f) 2 cm .
Step-by-step explanation:
Given:
The areas of the squares:
(a) 16 cm² (b) 144 cm² (c) 36 cm² (d) 49 cm² (e) 64 cm² (f) 4 cm².
Now, finding the side length of each squares.
So, putting the formula of area of square for getting the side length(a):
(a) Area = a²

Using square root both the sides we get:

Side length = 4 cm.
(b) Area = a²

Using square root both the sides we get:

Side length = 12 cm.
(c) Area = a²

Using square root both the sides we get:

Side length = 6 cm.
(d) Area = a²

Using square root both the sides we get:

Side length = 7 cm.
(e) Area = a²

Using square root both the sides we get:

Side length = 8 cm.
(f) Area = a²

Using square root both the sides we get:

Side length = 2 cm.
Therefore, the side length of the each areas are (a) 4 cm (b) 12 cm (c) 6 cm (d) 7 cm (e) 8 cm (f) 2 cm.
Check the picture below. Bearing in mind that x = -2 is a vertical line.