Answer:
x = 3
Step-by-step explanation:
Step 1: Write out equation
x + 9 = 18 - 2x
Step 2: Add 2x on both sides
x + 2x + 9 = 18 - 2x + 2x
3x + 9 = 18
Step 3: Subtract 9 on both sides
3x + 9 - 9 = 18 - 9
3x = 9
Step 4: Divide both sides by 3
3x/3 = 9/3
x = 3
Answer:
1.5 sweaters or 1 and half of a sweater
Step-by-step explanation:
you would multiply 6 by 3/12 and get 1 and a half
Answer:
answer is $149.70
Step-by-step explanation:
total add 15
divide by 60
times by 100
Well there's two ways to approach this:
1.) Finding the width and going from there
2.) Finding the scale factor
I would recommend using the scale factor technique. You see how the length is reduced by a factor of 4? Well since the perimeter's formula involves adding length times width, you can just multiply the perimeter by 1/4 since the length went from 44 to 11(Just a rule, take it by heart). That means that the perimeter is

.
The area is multiplied, not added, so you have to <em>square</em> the scale factor. This means multiply the area by 1/16 (Another rule, take it by heart). This means that the area is [tex]\frac{1496}{16} = between 94 and 95