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rosijanka [135]
3 years ago
14

Travis deposited $100 into a savings account that earns 6% compounded monthly. He plans on keeping the money in the account for

6 months and depositing an additional $100 each month. at the end of 6 months, how much interest will Travis have earned?
Mathematics
1 answer:
jeyben [28]3 years ago
8 0
Travis will have earned $139.38 in interest.

There is a formula for calculating this problem, but you can solve it without; take 6% and add it back to the total along with the $100 deposited each month.
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Solve each system of linear equations by substitution.
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3x-2(2x-7)=9 \\ 3x-4x+14=9 \\ -x+14=9 \\ -14\ \ \ \ -14 \\ -x=-5 \\ /-1/-1 \\ \ \ x=5
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2 years ago
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Newly purchased tires of a particular type are supposed to be filled to a pressure of 30 psi. Let m denote the true average pres
dimulka [17.4K]

Answer:

a) 48.21 %

b) 45.99 %

c) 20.88 %

d) 42.07 %

e) 50 %

Note: these values represent differences between z values and the mean

Step-by-step explanation:

The test to carry out is:

Null hypothesis  H₀    is                           μ₀ = 30  

The alternative hypothesis                      m  ≠ 30

In which we already have the value of z for each case therefore we look  directly the probability in z table and carefully take into account that we had been asked for differences from the mean (0.5)

a)  z = 2.1   correspond to  0.9821  but mean value is ubicated at 0.5 then we subtract    0.9821 - 0.5  and get 0.4821   or 48.21 %

b)  z = -1.75   P(m) = 0.0401     That implies the probability of m being from that point p to the end of the tail, the difference between this point and the mean so 0.5 - 0.0401 = 0.4599 or 45.99 %

c)  z = -.55    P(m) = 0.2912    and this value  for same reason as before is 0.5 - 0.2912 = 0.2088  or 20.88 %

d)  z = 1.41     P(m) = 0.9207    0.9207 -0.5     0.4207  or  42.07 %

e)  z = -5.3   P(m) = 0    meaning there is not such value in z table is too small to compute  and difference to mean value will be 0.5  

d)  z= 1.41      P(m) =

4 0
2 years ago
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Answer:

The expression provided will have 2 terms (B.)

Step-by-step explanation:

3x(x + 1) + x

3x^{2} + 3x + x

3x^{2} + 4x

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Drupady [299]

Answer:

Step-by-step explanation:

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