exam Maths Puzzle Numerical Ability

Solve the system by addition.
-5x + 2y = 10
x - 3y = 11

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exam Other Question

Your grandma deposits $1000 in a savings account for you that pays 4% interest compounded yearly.

How much money will you have after 18 years? The following hypotheses is an example of
H0:π ≤.40
Ha:π > .40

a a one tail test for means
b. a two tail test for means
c. A one tail test for proportions
d. a two tail for proportions
e. None of the above