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2n is even, so (2n+1) is odd ; Multiplying even by odd gives: 2n(2n + 1) ; which is a multiple of 2, thus even * odd = even.

SUVAT equations give s = vt ; v = 32mph ; t = 1h 15mins = 1.25h ; s = 32 * 1.25 = 40 miles

Let P(n) be the proposition that 2ⁿ⁺² + 3²ⁿ⁺¹ is a multiple of 7 for all positive integers of n.
Let n=12³ + 3³ = 8 + 27 = 35 = 7(5)This is divisible by 7....

-An action potential arrives at the presynaptic membrane-Ca²⁺ ion channels open-Ca²⁺ ions diffues into presynaptic knob-Acetylcholine/ neurotransmitter in vesicles-Vesicles move towa...

A) symmetrical straight lines coming out of the particle, with arrows pointing away from the particle. A useful tool in answering these questions is to imagine what would happen if you placed a second pos...