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tatiyna
3 years ago
13

HELPPPPPPP 1.The expression p−0.15p can be used to calculate the final cost of an item that has a price of p and is discounted 1

5%.
What is the final cost of an item that has an original price of $23?
2.6t+3
3.2t−3
4.t2
Mathematics
1 answer:
schepotkina [342]3 years ago
6 0

Answer:

Answer is in the attachment

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Answer:

The interest rate of Jess's account was 7%

Step-by-step explanation:

A = P * (1 + rt)

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P = initial principal balance

r = annual interest rate

t = time (in years)

Replacing with the values we know:

A =  P * (1 + rt)

8,150 = 5,000 * (1 + r * 9)

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1.63 - 1 = 9r

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Answer:

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Step-by-step explanation:

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\sigma^{2} =\frac{\Sigma(X- \mu)^{2}}{N} \\or \\ \sigma^{2} =\frac{\Sigma(X)^{2}}{N} -\mu^{2} \\

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