Y=4x-2 and y =-1/2x+4 is it perpendicular parallel or neither ?

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

6 0

Perpendicular because the slopes are different and on is negative and the other positive.

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The band boosters collected $2400 from the sale of hamburgers and hotdogs.The amount earned from hamburgers and hotdogs were equ

mina [271]

400 Hamburgers
600 Hot dogs

Divide 2,400 by two because that's how many items they sold. You'll get 1,200.

Divide 1,200 by 3 because that's how much a hamburger costs and you'll end up with 400

Divide 1,200 by 2 because that's how much a hot dog costs and you'l end up with 600

To check, multiply 400x3 and 600x2

Then add the sums together- 1,200+1,200= 2,400

3 0

3 years ago

Read 2 more answers

Listed below are amounts (in millions of dollars) collected from parking meters by a security company in a certain city. A lar

Sever21 [200]

Answer:

a i.) The mean for the security company is $ 1.47 million

a ii.) The median for the security company is $ 1.55 million

a iii.) The mean for the other companies is $ 1.96 million.

a iv.) The mean for the other companies is $ 2.0 million.

b) B. The mean and the median for the security company are both lower than the mean and the median for the collections performed by other companies.

c) B. Since the security company appears to have collected lower revenue than the other companies, there is some evidence of stealing by the security company's employees.

Step-by-step explanation:

By mean, we sum all the observation and divide by the sample size (n). Where sample size is the number of observations.

Mathematically,

$\bar{x} = \frac{\sum\limits_{i=1}^{n}{x_{i}}}{n}$ , where xi is the observations or values given.

By median, we mean middle number. So, we sort the values in ascending or descending order and take the value(s) in the middle. If the sample size is even, we take the 2 middle values and obtain the average.

See below, R programming codes for the solution.

##########...... R code

s = c(1.6,1.8,1.6,1.8,1.7,1.2,1.1,1.2,1.2,1.5)

c = c(1.5,2.1,1.9,2.2,1.9,1.7,2.1,2.2,2.2,1.8)

length(s)

mean(s); median(s)

mean(c);median(c)

t = (mean(s)-mean(c))/sqrt((var(s) + var(c))/length(s))

pnorm(t)

##############################################

For question C, we compute the test statistics, and obtain the p-value, see the last two lines of the R codes.

And since the p-value is less than level of significance, the test is significant. Thus, we conclude that:

Since the security company appears to have collected lower revenue than the other companies, there is some evidence of stealing by the security company's employees.

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4 years ago

Kim walks 3/4 of a mile in 3/10 of an hour. what is her speed in miles per hour

Monica [59]

Kim’s speed is 2.5 miles per hour. Hope this helped!