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Maths

V=u+at u=3 a=-2 t= 1/4

Re-write the original equation: v = u + at, except now with the numbers they've given for each letter: v = 3 + (-2 * 1/4) ---> [Remember in algebra, two letter next to each other have a multiply in between them!] Now we simplify using BIDMAS: v = 3 + (-1/2) v = 3 - 1/2 v = 2 1/2 or 2.5 :) Ibrahim Dangra
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676 students helped

Maths

15% of a number is 42. What was the original number?

The answer is 280 Working out: 0.15x = 42 x = 42/0.15 x = 280 Abdur Khan
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106 students helped

Maths

How do I do differential equations?

Initially, your equation will include dy/dx = (...) right? Inside the (...) will be an "x" term and a "y" term. For example: dy/dx = x/(1 + y). Rearrange that so your "y" term is with dy and your "x" term is with dx: (1+y) dy = x dx Integrate each side! y + (y^2/2) = x^2/2 + c ---> [the (+ c) only needs to be on one side, I prefer the left.] What you do from here depends on your question s... more Ibrahim Dangra
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676 students helped

Maths

7+n

Your question seems to be incomplete, care to elaborate Samuel Osei-Wusu
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4.2k students helped

What are the types of Taxes?

Maths 