The number of undamaged bricks is 133,145 -12 = 133. To find the percentage available, divide the number of available bricks
by the total number that were sent and multiply by 100 to get a percentage, 133/145 x 100 = 91.7%.

Divide the size of the walkway, 50 cubic feet, by the amount that each bag makes, 15 cubic feet; 50/15 =3.3. A little over 3 bags are needed to fill the walkway. Therefore, 4 bags need to be purchased.

The formula for the perimeter of a rectangle is P = I +1 + w + w. Since the two lengths add up to 30, the two widths must add up to 20 to make the perimeter of 50. Since the two widths are the same they must each be 10 feet.

Use the conversion to calculate; if 1 lb = 16 oz, then multiply 34 by 16 to find the total number of 544 oz, 34 x 16 = 544. If each nail weighs 1 oz, there are 544 nails in a 34 lb box.

To solve I = E/R for E, multiply both sides of the equation by R. The Rs cancel each other out on the right side of the equation,
so the equation becomes IR = E. The equation can be flipped ’ around to become E = IR, which is Answer A..

Since a post is needed for every four feet of fencing, divide the number of feet of fencing, f, by four to find the number of posts needed. The expression is f/4.

The final calculation is for two houses, so it may be easier to find out how much it costs to clean one house and then double it at the end. One room in the house costs $25 so the additional six rooms will cost $27,6 x $4.50 = $27, so the total for one house is $52, $25 + $27 = $52. We are trying to find the cost for two houses, so by doubling the cost for one house we find the total cost is $104, $52x2 = $104.

To find the cost per grinder, divide the total cost, $900, by the number of grinders, 120; $900+ 120 = $7.50.

Divide the length of the single top plate by the spacing of the rafters.
14' / 2' = 7
Add one for the end. 7 + 1 = 8

Use the formula
Thickness x Width x Length / 12
2 x 12 x 8 x 2 pieces = 384
384 / 12 = 32
32 x .42 cents per foot = $13.44

There are 14 stairs with a ratio of 3:7. The total depth is 210 in, 14 * 15 = 210 and using a simple proportion will help find the height. 3/7 = x/10;
7x = 3(210); (7x)/7 = 630/7;x= 90.
90 inches is the same as 7.5 ft, 9°/iz = 7.5.

Subtract the length of the shelf, 5.6 ft, from the total length of the wall, 12 ft, in order to find out how much extra wall space there is; 12 ft - 5.6 ft = 6.4 ft. Since the shelf has to be centered, the extra 6.4 ft. must be distributed evenly on either side; 6.4 ft/2 = 3.2 ft must be left on each side of the shelf.

Replace s with $2,200. The equation becomes E = 0.22x2,200 + 150. The rules for order of operations state that multiplication is always 38. done before addition, Therefore, complete the multiplication, ' 0.22x2,200 = 484, first, then add 150 to the result; 484+ 150 = $634.

When converting from feet to meters (smaller unit, larger unit), divide the total feet by 3.28,62.73.28 = 19.1 meters.

To switch from percentages to decimals, divide the percentage by 100, 1 1/100 = .11. You can also move the decimal point two places to the left.