Answer:
<u>x = 3</u>
Step-by-step explanation:
y = 5x
x + y = 12
x + 5x = 12 (substitute 5x in the place of y)
6x = 12
x = 12/6
<u>x = 3</u>
Answer: x=
−2
3
y+20
Step-by-step explanation
240=12x+8y
Step 1: Flip the equation.
12x+8y=240
Step 2: Add -8y to both sides.
12x+8y+−8y=240+−8y
12x=−8y+240
Step 3: Divide both sides by 12.
12x
12
=
−8y+240
12
x=
−2
3
y+20
Answer:
x=
−2
3
y
Answer:
6
Step-by-step explanation:
We can fill in what we know which is the length and perimeter.
82=2(35)+2(w)
Multiply 35 x 2 = 70
82-70= 12
12/2=6
This is a conversion problem. We know that 1 mile is 5280 feet, right? Since Ellie lives 2 miles, and two is double of 1, we just take 5280 and multiply that by two (or add it twice) to find how many feet is between Ellie's house and school. 5280 x 2 = 10560 (you get the same answer if you add 5280 twice). Therefore, 10560 feet lies between Ellie's house and school.
