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rjkz [21]
3 years ago
8

Need help on answering number 12.

Mathematics
1 answer:
Greeley [361]3 years ago
5 0
A) 9.06 is the square root of 82
b) a. he evaluated 82/2 instead of evaluating the square root of 82
You might be interested in
Please help!!
postnew [5]

2  \frac{5}{8}  \div 2  \frac{1}{2}
Change the mixed fractions to improper fractions.
To do this, multiply the whole number part by the denominator. Add that to the numerator. Then write the result on top of the denominator.

You would now have:
\frac{21}{8}  \div  \frac{5}{2}
Change the division sign to a multiplication sign by turning the second fraction upside down.
That is,
\frac{21}{8}  \times  \frac{2}{5}

The answer is:
\frac{42}{40}

This can be simplified to:
\frac{21}{20}



8 0
3 years ago
Suppose you own two stocks, A and B. In year 1, stock A earns a 2% return and stock B earns a 9% return. In year 2, stock A earn
Verizon [17]

Answer:

Both the stock have the same expected return.

Step-by-step explanation:

In year 1 the return earned by stocks A and B are:

Stock A = 2% return

Stock B = 9% return

In year 2 the return earned by stocks A and B are:

Stock A = 18% return

Stock B = 11% return

Compute the expected return for stock A as follows:

Expected\ return\ for\ A=\frac{2+18}{2}=10\%

Compute the expected return for stock B as follows:

Expected\ return\ for\ B=\frac{9+11}{2}=10\%

Thus, both the stock have the same expected return.

7 0
3 years ago
The time to failure (in hours) of fans in a personal computer can be modeled by an exponential distribution with l=0.0003
Dvinal [7]

Answer: 0.0497870 ; 0.87754

Step-by-step explanation:

Given that :

λ = 0.0003

Defining a continuous distribution function :

F(x) = 1 - e^-λx = 1 - e^-0.0003x ; x ≥ 0

a. What proportion of the fans will last at least 10,000 hours?

P(x ≥ 10000) = e^-0.0003(10000) = 0.0497870

b. What proportion of the fans will last at most 7000 hours?

P(x ≥ 7000) = 1 - p(x ≤ 7000) = 1 - e^-0.0003(7000)

1 - 0.12245642825 = 0.87754

3 0
3 years ago
Referring to the figure, find the surface area
Korvikt [17]

Answer:

2545 m rounded from 2544.69

Step-by-step explanation:

A=2 π r h + 2 π r 2 = 2 · π · 15 · 12 + 2 · π  ·152

≈ 2544.69005

rounded to 2545

~~~

3 0
2 years ago
Read 2 more answers
A grocery store sells a bag of 8 oranges for $5.92. What is the unit cost?
Elanso [62]

Answer:

47.36

Step-by-step explanation:

i did the work

3 0
3 years ago
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