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3 years ago

Help!!! I don't know this

Mathematics

2 answers:

AveGali [126]3 years ago

4 0

Answer: A. Graph c nkkhgthjnvcf

vovikov84 [41]3 years ago

4 0

Answer:

Graph C

The Y axis is up and down and the x axis is side to side. So first we want to look to see which line crosses the y axis the the up and down black line.

When you are finding a coordinate you set it up like this (x, y). You will find x first and y second.

So we are down to two graphs graph a and graph c. Know both of them cross at the (0,-7) mark but it asks for one other thing a well.

On a graph when something decreases it will go down and when something increases it will go up. So that tells me it is graph C.

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1. Two dice are thrown at the same time . What is the probability that the sum will be 7 or 11 ?

netineya [11]

Answer:

1. 0.2222222

2. .6667

Step-by-step explanation:

for question 1

there can only be 36 outcomes so you find out how many time you could get 7and2 which is 8 from so u write 8.36=.2222

for question 2

divide the outcome by the total out comes example(there are 6 red balls and 4 white out of 15 so you do 10/15=.6667)

8 0

3 years ago

Read 2 more answers

Consider a data set containing the following values: 70 65 71 78 89 68 50 75 The mean of the preceding values is 70.75. The devi

Leokris [45]

Answer:

If this is the sample data, the sample variance is 125.07 and the sample standard deviation is 11.18

If this is a population data, the population variance is 109.44 and the population standard deviation is 10.46

Step-by-step explanation:

We are given the following data-set:

70, 65, 71, 78, 89, 68, 50, 75

Deviations from the mean

–0.75, –5.75 , 0.25, 7.25, 18.25, –2.75, –20.75, 4.2

Sample size, n = 8

Sample:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

Sum of squares of differences =

0.5625 + 33.0625 + 0.0625 + 52.5625 + 333.0625 + 7.5625 + 430.5625 + 18.0625 = 875.5

$s = \sqrt{\dfrac{875.5}{7}} = 11.18$

$\text{ Sample variance} = s^2 = 125.07$

Population:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

Sum of squares of differences =

0.5625 + 33.0625 + 0.0625 + 52.5625 + 333.0625 + 7.5625 + 430.5625 + 18.0625 = 875.5

$\sigma = \sqrt{\dfrac{875.5}{8}} = 10.46$

$\text{ Population variance} = \sigma^2 = 109.44$

7 0

3 years ago

What does -(-6) mean

forsale [732]

Answer:

the opposite of what is in the parentheses so -(-6) would just be 6

3 0

2 years ago

Pls pls pls pls pls pls

Vesna [10]

Answer:

$30

Step-by-step explanation:

One dollar is 17 pesos according to the chart, so 510/17 would be the US dollar price ($30)

6 0

3 years ago

Read 2 more answers

Carmen sells electronics. She made a 10% commission on every dollar sale that she makes. One month Carmen got a commission check

777dan777 [17]

Answer:

Carmen made $25,000 in sales in the month.

Step-by-step explanation:

To find the total number of sales, start with the amount she made in commission and then divide by the percentage of commission that she makes.

$2,500/10% = $25,000

7 0

3 years ago

Help!!! I don't know this ​

Help!!! I don't know this