All categories

3 years ago

38 = 1/2n -14A. 104B. 48C. -104D. -48

Mathematics

2 answers:

erica [24]3 years ago

4 0

Answer:

A. 104

Step-by-step explanation:

38 = 1/2n - 14

38 + 14 = 1/2n

52 = 1/2n

52 : 1/2 = n

52 . 2/1 = n

52 . 2 = n

104 = n

alisha [4.7K]3 years ago

3 0

Answer:

1/2n-14=38

add 14 on both sides

1/2n=52

divide by 1/2 on both sides

N=104

SO YOUR ANSWER SHOULD BE LETTER A

Step-by-step explanation:

You might be interested in

Let F of x equals the integral from 1 to 3 times x of the natural logarithm of t squared. Use your calculator to find F″(1).

eduard

Reading that as

$F(x)=\displaystyle\int_1^{3x}(\ln t)^2\,\mathrm dt$

By the fundamental theorem of calculus, the first derivative is

$F'(x)=3(\ln(3x))^2$

and so the second derivative would be

$F''(x)=\dfrac{6\ln(3x)}x$

which means

$F''(1)=6\ln3$

7 0

3 years ago

Read 2 more answers

The weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation

Korvikt [17]

Answer:

The z-score of a male bird of this species with a weight of 29.37 grams is 1.7.

Step-by-step explanation:

We are given that the weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation of 1.1 grams.

Let X = weights of adult male birds of a certain species

So, X ~ Normal( $\mu=27.5,\sigma^{2} =1.1^{2}$ )

The z score probability distribution for normal distribution is given by;

Z = $\frac{ X-\mu}{\sigma } }$ ~ N(0,1)

where, $\mu$ = population mean weight = 27.5 grams

$\sigma$ = standard deviation = 1.1 grams

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

SO, the z-score of a male bird of this species with a weight of 29.37 grams is given by;

Z score = $\frac{ X-\mu}{\sigma } }$ = $\frac{ 29.37-27.5}{1.1 } }$