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3 years ago

Use pictures or words to explain how you would use the sum of 13 to show how to add in any order

Mathematics

2 answers:

zheka24 [161]3 years ago

4 0

9 + 4 or 4 + 9. They both equal 13.

aliina [53]3 years ago

3 0

6 + 7 or 7 + 6,either way they both equel 13

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Question below answer correctly please

ratelena [41]

Answer:

C: x≥12

D: x<-15

E: x<7.5 or 15/2

F: x<-8

G: x≥-2.7 or -8/3

H: x≥-6

Step-by-step explanation:

I trust you know how to graph it

3 0

3 years ago

Kevin’s grandfather left him 100 shares of Apple Inc. and 40 shares of Ford Motor Company. How much is his stock worth, assuming

umka2103 [35]

Answer:

Step-by-step explanation:

From the problem statement, we can create the following equation:

$T = 100A + 40F$

Where $T$ is the total worth of all shares, $A$ is the price of an Apple share, and $F$ is the price of a Ford share.

Plugging in the numbers from the problem statement, we get the following:

$T = 100(536) + 40(9.85)$

Multiplying these numbers out and adding them together will give you your answer.

3 0

4 years ago

A math teacher was frustrated at the number of students leaving their graphing calculator behind in her classroom at the end of

AleksAgata [21]

Answer:

The 99% confidence interval for the proportion of all students at this school who have their names written on their graphing calculators is (0.4652, 0.8148).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

A random sample of 50 students is selected, and of the students questioned, 32 had their names written on their graphing calculators.

This means that $n = 50, \pi = \frac{32}{50} = 0.64$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.64 - 2.575\sqrt{\frac{0.64*0.36}{50}} = 0.4652$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.64 + 2.575\sqrt{\frac{0.64*0.36}{50}} = 0.8148$

The 99% confidence interval for the proportion of all students at this school who have their names written on their graphing calculators is (0.4652, 0.8148).

8 0

3 years ago

Which equation(s) model inverse variation? Select all that apply.

Harman [31]

For this case, what you should know is that the equations that represent an inverse variation are those that could not form a straight line, for example.

We have then:

Equation 1:

pv = 13

Rewriting:

p = 13 / v

P and v are represent an inverse variation.

Equation 2:

z = (2 / x)

z and x are represent an inverse variation.

Answer:

equations represented inverse variation are:

pv = 13

z = (2 / x)

7 0

3 years ago

Solve y = x + 6 for x. x = y + 6 x = −y + 6 x = y − 6 x = −y − 6

madam [21]

Answer:

x = y − 6 Is your answer

Step-by-step explanation:

y = x + 6

x = y -6

6 0

3 years ago