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Consider newtons equation: v = (a * t) + u, and you need to isolate a because you have the values for v, t and u and need to find a, first subtract u from both sides, gives v - u = (a * t) + u - u, the + u - u cancel leaving v - u = a * t, so essentially you've moved the u from one side to the other, then you would divide both sides by t, the t's would cancel out on the right side, leaving
(v - u) / t = a, essentially you've moved the t over to the other side, now a is isolated and can be calculated.
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Consider x + 4 = 10: find x (isolate x), subtract 4 from both sides, leaving
x + 4 - 4 = 10 - 4, the 4's cancel out on the left, leaving x = 10 - 4, so x = 6
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How do you find the unknown length of one side of a triangle when you know the perimeter and the length of the other two sides?
subtract the two sides that you know from the perimeter to get the unknown side.
How do you get the variable alone in a equation?
To explain this, I'll use the example equation: 3x+8=5x-4 To get the variable alone, you must add, subtract, multiply, or divide both sides by the correct numbers to get x on one side. This is easier than it sounds. First, get x on one side. To do this, subtract both sides by 3x, which gives you: 8=2x-4 Next, you must get all the constants on the other side. To do this, add 4 to both sides, giving you: 12=2x Finally, you have to remove the coefficient from x. To do that, divide both sides by 2, which gives you: 6=x Plug that back into your original equation, which gives you: 3(6)+8=5(6)-4 18+8=30-4 26=26 This is a true statement, so we know that we have the correct answer.
What is the length of a rectangular lot that has a perimeter of 730 m and a width of 75 m?
The perimeter of a rectangle is the sum of its sides, so 2 lengths plus to widths: P = 2l + 2w We know P and w: 730 = 2l + 2(75) 730 = 2l + 150 Subtract 150 from both sides: 580 = 2l Divide both sides by 2: 290 = l The length is 290 meters.
How do you find the perimeter of a scalene triangle when you only know two sides and the area?
To get the perimeter, you need to add all three sides. I assume you can get the third side by inserting the numbers you know into Heron's formula.
How do you add consecutive even numbers?
Well if you don't know what the numbers are then you can let x be an even number, then your consecutive numbers would be x, x+2, x+4,x+6 etc. so lets say that x is an even number and you are told that x and the three consecutive even numbers after it added together equals 48. then you would say: x + (x +2) + (x + 4) + (x + 6) = 48 combine like terms and you get: 4x + 12 = 48 subtract 12 from both sides 4x = 36 x = 9 and there you have it. Hope this helps :)
