Let's translate this question into a formula:
Total cost = (unit price of the eraser) (number of erasers purchased)
Final total cost = (Total cost) * 1.08 = ?
Why? The Final Total Cost = Cost of the erasers + (Cost of the erasers)(sales tax rate)
Final total cost = 1.08 (Total Cost)
Final total cost = 1.08 ($0.50)(24) (since 1 dozen = 12, and 2 dozen = 24)
Okay... so the y intercept it automatically 9. so that's out of the way. Now you narrow it down to a or b. the first number, with x is -3x. Thats your slope. easy as that
STEP 1: Multiply second equation by -3.
After multiplying we have the following system:
3x+4y−3x+3y=8=−36
STEP 2: add the two equations together to eliminate x from the system.
7y=−28
STEP 3: find y
<u>y=−4</u>
<u></u>
STEP 4: substitute the value for y into the original equation to solve for x.
3x+4(−4)=8
<u>x=8</u>
You require to find the perimeter of the carpet.
Perimeter = 2xLength + 2xWidth
Perimeter = 2 x 4 + 2 x 2ft 6 ins.
Perimeter = 8 + 5 ft
Perimeter = 13ft
13ft of braid is required.
Hope this helps:-)
<span>2 pieces of ribbon measuring 1/3 meter can be cut from a piece of ribbon measuring 3/4 meters. 3/4-2/3 is 1/12 meaning that 1/12 meters is leftover.</span>