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3 years ago

Write a multiplication fact that goes with this division fact. 30 ÷ 5 = 6

Mathematics

2 answers:

34kurt3 years ago

8 0

5 times 6 = 30 hope this helped

masya89 [10]3 years ago

7 0

6x5=30

Just write your equation the other way around with a multiplication sign! ;)

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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

ANSWER ASAP PLS Eve knits scarves for her online store. This week she has already knitted 9 scarves. There are 2 days left in th

JulsSmile [24]

Answer:

Step-by-step explanation:

Since Eve has already knitted nine scarves we just need to add of few more. Our equation is this: 9 + _ + _ = ?

If you do 9 + 4 + 4, you get 17. Therefor, Eve must knit four scarves per day to meet her goal.

5 0

3 years ago

Read 2 more answers

PLEASE HELP ME!!!!!!!!

Delicious77 [7]

Angle θ between two vectors is given by, $\theta =cos^{-1}( \frac{u
 \cdot v}{|u||v|} )$ ; where $u \cdot 
v=-5(-4)+(-4)(-3)=20+12=32$ ; $|u|= \sqrt{ (-5)^{2} + (-4)^{2} } = 
\sqrt{25+16} = \sqrt{41}$ and $|v|=\sqrt{ (-4)^{2} + (-3)^{2} } = 
\sqrt{16+9} = \sqrt{25}=5$ .
Therefore, $\theta =cos^{-1}( \frac{32}{ 5\sqrt{41}} )=cos^{-1}0.9995=1.8^o$

3 0

3 years ago

Describe a situation that models a linear pattern and then describe a situation that models a nonlinear pattern.

sergiy2304 [10]

Step-by-step explanation:

here's ur answer in attachment

mark it brainliest if it helps you ❤️

4 0

2 years ago

What is the square root of √64/25<br> A) 8/5<br> B) -8/5<br> C) ±8/5 <br> D) ±320/125

horsena [70]

Answer:

C) ±8/5

Step-by-step explanation:

Both the numerator and the denominator are positive squares (8 is the square root of 64, and 5 is the square root of 25). Finding the square root of both the numerator and the denominator will yield the simplified fraction ±8/5.

Remember: the square roots of a positive square are always both positive and negative. The square root of $\sqrt{4}$ is 2 ( $2^{2} =4$ ) and -2 ( $-2^{2} =4$ )

5 0

3 years ago