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3 years ago

Draw graph x + y = 7 and x - y = 2 on the same graph

Mathematics

2 answers:

borishaifa [10]3 years ago

8 0

Graphed in attached file and drawn!

trapecia [35]3 years ago

6 0

Answer:

see attachment

Step-by-step explanation:

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PLEASE HELP THIS IS DUE!!!

Rashid [163]

Answer:

432

Step-by-step explanation:

b x h (base x height)

the base is 27 yards and the height is 16.

27 x 16 = 432

5 0

2 years ago

Jane moves from a house with 71 square feet of closet space to an apartment with 45.44 square feet of closet space. What is the

motikmotik

Answer:

45.44/71 - 1 = -0.36 = -36%

36% decrease.

7 0

3 years ago

What is the interquartile range of this set of data? 15, 19, 20, 25, 31, 38, 41

Irina18 [472]

First, you have to find the median, which is the number in the middle: 25

Then cut the data in half by the median, so your new data sets are
15,29,20
and
31,38,41

Now you find the median of both of those sets, which is 29 and 38.

The interquartile range is the difference between the numbers, so 38-29 = 9.

8 0

3 years ago

Julia has 2 identical rooms in her house. If each room measures 8 fee on one side and 12 feet on another, what is the total area

Ksenya-84 [330]

Answer:

Step-by-step explanation:

all you have to is 8x12 multiplied by 2 since there is 2 rooms which is 192

5 0

2 years ago

A survey of 80 randomly selected companies asked them to report the annual income of their presidents. Assuming that incomes are

Artyom0805 [142]

Answer:

The 90% confidence interval estimate of the mean annual income of all company presidents is ($579,545, $590,580).

Step-by-step explanation:

The information provided is:

$n=80\\\sigma=30,000\\\bar x=585062.50\\\text{Confidence level} = 90\%$

The critical value of <em>z</em> for 90% confidence level is, 1.645.

Compute the 90% confidence interval estimate of the mean annual income of all company presidents as follows:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\\\\=585062.50\pm 1.645\times\frac{30000}{\sqrt{80}}\\\\=585062.50\pm5517.50\\\\=(579545, 590580)$

Thus, the 90% confidence interval estimate of the mean annual income of all company presidents is ($579,545, $590,580).

This interval implies that there is 90% probability that the true mean annual income of all company presidents is within this interval.

4 0

2 years ago