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If you have a 52 percent in science and the exam is worth 30 percent how much do you need to pass to get 50 and over?
If 50 is passing: right now the contribution towards the total grade is (.70)*52, so the total grade = (.70)*52 + (.30)*E [for the final exam grade]. If the target is 50 for the total grade, then 50 = (.70)*52 + (.30)*E, and solve for E = (50 - (.70)*52)/(.30) = 45.3333, so a grade of 46 would put the final grade over 50. By the way, the maximum possible grade of a 100 on the final will result in 66.4 for the total grade.
How much weight will a 2 inch thick sidewalk support?
depends what its made of
A cement sidewalk will be poured around the outside of a rectangular plot that is 13m by 20 m what will be the area of the sidewalk if it is 1 meter wide?
Figure it like this: Because each side of the rectangular plot will have a one-meter wide sidewalk adjoining it, you know that the sidewalk, on each side of the plot will be two meters longer than the plot's dimensions. However, if you figured the length by adding the areas of each length of sidewalk, you would be wrong, because each length of sidewalk shares two corners with the adjacent lengths. Each corner is one square meter, and each length of sidewalk without two corners is the same as the dimension of the plot, times one meter. So essentially, you just add the plot dimensions and then add four. In other words, 2(13m * 1m) + 2(20m * 1m) + 4m2 = 26m2 + 40m2 + 4m2 = 70m2. Another way to figure it would be to figure the area which will be enclosed by the outer edge of the sidewalk (again, two meters longer than the plot on each side), and subtract the area of the plot itself, or: (15m * 22m) - (13m * 20m) = 330m2 - 260m2 = 70m2.
Please show work. A sidewalk borders a rectangular play area The play area measures 20 ft by 14 ft The width of the sidewalk is 2 ft What is the perimeter of the outside border of the sidewalk?
If the side walk is 2ft wide then the total measurement of the area is 22 ft by 16 ft. [ 20 ft + 2 ft by 14 ft + 2 ft] the perimeter of the outside border of the sidewalk would be 44 ft + 32 ft [(22 ft x 2) + (16 ft x 2)] for a total of 76 ft.
What is the maximum slope for a street?
Canton Avenue in Pittsburgh, Pennsylvania claims a 37% grade. Despite this steepness, the generally accepted answer is Baldwin Street, Dunedin, New Zealand rises in a ratio of 1 in 2.86 (a 35% percentage grade or a 19.3 degree angle) The reason that Baldwin Street is considered more reliable is that it runs a much longer distance.
