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3 years ago

PLEASE HELP MEEEE

Mathematics

1 answer:

kow [346]3 years ago

6 0

Answer:

23,500

Step-by-step explanation:

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(Fractions) Rewrite the expression using fithteenths. 2/5 - 1/3 =

Anastasy [175]

Answer:

1/15

Step-by-step explanation:

2/5-1/3=6/15-5/15=1/15

6 0

3 years ago

Consider a population list x, with a CV= 10%. A second population list, y, has a CV= 20%. The linear regression of y on x is y =

ch4aika [34]

Answer:

The correlation coefficient 0.5 depicts that there is moderate positive correlation between y and x.

Step-by-step explanation:

The linear regression equation is

y= a+bx

The given linear equation is

y= 10x

Here, slope=b=10 and intercept=a=0.

From above equation,

ybar=10xbar

We are given that CVx=0.1 and CVy=0.2

where CV=(standard deviation/mean)*100

We know that

b=r(Sy/Sx)

Multiplying by xbar/ybar on both sides

(xbar/ybar)b=r(Sy/Sx)(xbar/ybar)

(xbar/ybar)b=r[(Sy/ybar)/(Sx/xbar))]

(xbar/ybar)b=r[CVy/CVx]

As CVy/CVx=(Sy/ybar)*100/(Sx/xbar)*100=(Sy/ybar)/(Sx/xbar).

By putting ybar=10xbar, b=10, CVx=0.1 and CVy=0.2.

(xbar/10xbar)10=r(0.2/0.1)

1=r(0.2/0.1)

1=r(2)

r=0.5

There is moderate positive correlation between y and x.

6 0

2 years ago

PLEASE HELP ME

Sergeeva-Olga [200]

Answer: 10.00%

Step-by-step explanation:

With no other data, assuming equal attendance it's 1/5 that it's a visitor to Museum 3, and 1/2 that it's a man. So 1/5 × 1/2 = 1/10

10.00%

6 0

3 years ago

Read 2 more answers

What does this quote mean to you<br> “An eye for an eye will make the whole world blind”

DiKsa [7]

uhm like, what did you see in the internet is the opposite in the reality

5 0

2 years ago

A train left for London, and after 9 hours later, a car traveling 80 miles per hour tried catching up to the train. After 3 hour

morpeh [17]

Answer:

20 miles per hour

Step-by-step explanation:

Given that the train left for London, and after 9 hours later, a car traveling 80 miles per hour tried catching up to the train. After 3 hours, the car caught up

Which means that the car travelled the same distance in 3 hours as the train travelled in 9 + 3 = 12 hours

Let the distance be d

Given the speed of car is 80 miles per hour

We know that $speed=\frac{distance }{time}$

$80=\frac{d}{3}$

d = 240 miles

Now for the train Average speed = total distance / total time taken

Average speed of the train = $\frac{240}{12}$ = 20 miles per hour

7 0

2 years ago