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3 years ago

What does it mean when it is said that the variables x and y have no correlation?

Mathematics

1 answer:

vekshin13 years ago

6 0

A positive correlation between two variables, say x and y means that if one increases the other will increase as well

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PLEASE HELP ASAP FOR 10 POINTS

victus00 [196]

A^2 +a-6. You use the method of foiling where you multiply the first two terms, the the outside terms, the inside terms, then the last terms. You would do a•a, then a•-2 the a•3 then 3•-2. You would get a^2 -2a +3a -6. Then combine like terms to get your answer.

7 0

3 years ago

Three hikers are dividing the costs of a hiking trip evenly. They bought two permits that cost $15 each, three tram tickets that

cestrela7 [59]

Each hiker owes $41 or 4100 cents for the hiking trip.

Explanation

Cost of each permit is $15. So, the cost of two permits will be: $(\$15*2)= \$30$

Cost of each tram ticket is $19. So, the cost of three tickets will be: $(\$19*3)=\$ 57$

Cost of one can of bear spray is $36.

So, the total cost of the hiking trip $=\$30+\$57+\$36=\$123$

As the three hikers are dividing the total costs of the trip evenly, so each hiker owes $=\frac{\$123}{3}=\$41$ or 4100 cents.

3 0

3 years ago

T F IfA and B are similar matrices, then AT=BT

muminat

Answer:

Step-by-step explanation:

We know that for two similar matrices $A$ and $B$ exists an invertible matrix $P$ for which

$[tex]B = P^{-1} AP$ [/tex]

∴ $B^{T} = (P^{-1})^{T} A^{T} P^{T} \\$

Also $P^{-1}P = I\\$

and $(P^{-1})^{T} = (P^{T})^{-1}$

∴ $(P^{-1})^{T}P^{T} = I$

so, $B^{T} = (P^{-1})^{T} A^{T} P^{T} = (P^{T})^{-1}A^{T} P^{T}\\B^{T} = A^{T} I\\B^{T} = A^{T}$

7 0

3 years ago

What is the slope of the line that passes through the points (-4, 0) and (-4, -10)? Write your answer in simplest form.

Tresset [83]

Answer:

<h2> There is no slope.</h2>

Step-by-step explanation:

$slope=\dfrac{y_2-y_1}{x_2-x_1}$

It means that for a line passing through two points to have the slope, the x-coordinates of these point have to be different.

(-4, 0) and (-4, -10) means x₁ = x₂ = -4, so there is no slope.

{the line is parallel to Y-axis, and has an equation: x=-4}

4 0

3 years ago

ben brought two pizza to a party . he says that since 1/4 of each pizza left,the same amount of each pizza is left. What is his

bearhunter [10]

Since the 1/4 of each pizza left :

Which means that :
Pizza 1 = 1/4 pizza Left
Pizza 2 = 1/4 pizza Left

i think there is no error in what's ben saying

7 0

3 years ago