Answer:
A) Perimeter = 9.6 inches
Area = 5.76 inches ^2
B) Perimeter = 57.6 mm
Area = 207.37 mm^2
Step-by-step explanation:
The perimeter and the area of the object in the scale drawing.
Perimeter = 2.4 x 4 = 9.6 inches
Area = 2.4 × 2.4 = 5.76 inches ^2
Then find the perimeter and area of the actual object.
If 1 inch = 6mm, and we have 2.4inches, then we need to multiply: 2.4 × 6 = 14.4
So each side of the square is 14.4 mm long
The perimeter of a square is 4 equal sides, so you will need to multiply 14.4 and 4
14.4×4 = 57.6mm
The area of a square is the length times its width. So that means to find the area, you will need to multiply 14.4 and 14.4 together.
14.4 × 14.4 = 207.36mm^2
Rosa earned $50
Explanation:
Two people Rosa & her brother
Her brother earns X
While Rosa earns 2X + 8
Now we gotta solve for X
They made $71. $71 minus X should give you Rosa’s pay
71 - X = 8 + 2X (subtract 8 from 71)
63 - X = 2X (add X to 2X)
63 = 3X (divide by 3)
21 = X
Plug in $21 for Rosa:
8 + 2(21)
8 + 42 = $50
Answer:
18
Step-by-step explanation:
8 3/4 + 9 2/8
We can simplify 2/8 by dividing the top and bottom by 2
8 3/4 + 9 1/4
Add the whole numbers
8+9 = 17
3/4 + 1/4 = 4/4 = 1
Add this to the whole numbers
17+1 = 18