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4 years ago

Negative three forths plus one eighth

Mathematics

2 answers:

konstantin123 [22]4 years ago

8 0

The answer is -5/8
you have to find the lcd then simplify your answer

bezimeni [28]4 years ago

8 0

The answer to the problem is -5/8

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You observe a portfolio for five years and determine that its average annual return is 13% and the standard deviation of its ret

horrorfan [7]

Answer:

There is a 95% probability that the portfolio would not loose more than 30% of its value.

Step-by-step explanation:

The confidence interval for proportions (p) is:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

The information provided is:

$\hat p = 0.13\\\sqrt{\frac{\hat p(1-\hat p}{n}} =0.21$

For 95% confidence level the critical value of z is:

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

The 95% confidence interval for average annual return is:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\=0.13\pm 1.96\times0.21\\=0.13\pm 0.4116\\=(-0.2816, 0.5416)\\\approx(-28\%, 54\%)$

The lower limit of the 95% confidence interval is -28%.

This implies that the portfolio would not loose more than 28% of its value.

Thus, there is a 95% probability that the portfolio would not loose more than 30% of its value.

6 0

3 years ago

By what number should 9 4upon5 be multiplied to get 42

kondaur [170]

Answer:

4 2/7

Step-by-step explanation:

x * 9 4/5 = 42
x * 49/5 = 42
x = 42 : 49/5
x = 42 * 5/49
x = 30 /7
x = 4 2/7

7 0

3 years ago

If I make 111,000 a year how much do I bring home monthly ?

umka21 [38]

9,250 is the answer i believe

3 0

3 years ago

Read 2 more answers

6. Kiera is comparing the cost of two swimming pool memberships to determine which she will buy. Pool K charges a $30 membership

balandron [24]

Answer:

Pool K cost equation : 30 + 5V , Pool M cost equation : 10 + 10V

Pool K slope & intercept = 30 & 5 , Pool M slope & intercept = 10 & 10

Step-by-step explanation:

Total cost [Pool] = Fixed (membership) cost + Variable cost (per visit)

Intercept is part at which equation line intersects x or y axis. In pools case, it is fixed (membership) cost. Slope is change in y due to change in x. In pools case, it is variable cost (per visit)

Pool K cost equation : 30 + 5V , Pool M cost equation : 10 + 10V

where V = number of visits.

Pool K slope & intercept = 30 & 5 , Pool M slope & intercept = 10 & 10

6 0

3 years ago

What is the integral of sec x (sec x + tan x ) dx

Ann [662]

$\sec x(\sec x+\tan x)=\sec^2x+\sec x\tan x$

Recall that $(\tan x)'=\sec^2x$ , and $(\sec x)'=\sec x\tan x$ .

So,

$\displaystyle\int \sec x(\sec x+\tan x)\,\mathrm dx=\tan x+\sec x+C$

3 0

3 years ago