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4 years ago

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Ariene feeds her kitten kgrams of food 2 times in the morning and 2 times in the evening. She feeds her dog d grams of food 1tim

e in the morning and 1 time in the evening. Which expressions can we use to describe how many grams of food Arienne feeds her animals per day?

1 answer:

dlinn [17]4 years ago

3 0

Question already asked before;

brainly.com/question/10753775

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The starting salaries of individuals with an MBA degree are normally distributed with a mean of $40,000 and a standard deviation

liraira [26]

Answer:

d. 76.98%

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value 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. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 40000, \sigma = 5000$

What percentage of MBA's will have starting salaries of $34,000 to $46,000?

This is the pvalue of Z when X = 46000 subtracted by the pvalue of Z when X = 34000. So

X = 46000

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{46000 - 40000}{5000}$

$Z = 1.2$

$Z = 1.2$ has a pvalue of 0.8849

X = 34000

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{34000 - 40000}{5000}$

$Z = -1.2$

$Z = -1.2$ has a pvalue of 0.1151

0.8849 - 0.1151 = 0.7698

So the correct answer is:

d. 76.98%

7 0

3 years ago

Solve using the quadratic formula:

timurjin [86]

Answer:

$\boxed{x_1 = \frac{7 + \sqrt{5} }{2} ~~or~~x_2 = \frac{7 - \sqrt{5} }{2} }$

Step-by-step explanation:

$x^2 - 7x + 11 = 0$

$x^2 - 7x = -11$

$(x - \frac{7}{2} )^2 - \frac{49}{4} = -11$

$(x - \frac{7}{2} )^2 = -11 + \frac{49}{4}$

$(x - \frac{7}{2} )^2 = \frac{5}{4}$

$x - \frac{7}{2} = \pm \sqrt{\frac{5}{4}}$

$x = \frac{7 \pm \sqrt{5} }{2}$

3 0

3 years ago

#8 What is the VALUE of point B (put in decimal form) *

MakcuM [25]

Answer:

B= -2.75

A= -0.25

C= 2.50

4 0

3 years ago

Which statement is true about the data?

vladimir1956 [14]

Answer:

B

Step-by-step explanation:

The diagram shows two box plots.

Liam's box plot shows the median = 10

the range = 20 - 4 = 16

Sumat's box plot shows the median = 14

the range = 22 - 3 = 19

Difference between medians is 14 - 10 = 4

between ranges is 19 - 16 = 3

Thus, correct option is option B

7 0

3 years ago

Read 2 more answers

5. Joe has $425.50 before he goes shopping. He spends 20% of it on groceries and then of the

garri49 [273]

I’m not sure if this is right. but wouldn’t it be 0 if he spent the remaining amount of money on supplies for an art project?

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3 years ago