Hannah has only nickels and dimes in her wallet. she has a total of $2.50 and a total of 30 coins how many nickels does she have using system of equations? i really need you guys i don’t know how to solve this

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.

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6

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66

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66

6

66answer:

step-by-step explanation: