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2 years ago

I need help on this ASAP… Line A passes through the points (-4,5) and (0,2). Line B…

Mathematics

1 answer:

alexgriva [62]2 years ago

7 0

Answer:

Parallel lines: Line B and C

Perpendicular lines: Line A and B; Line A and C

Step-by-step explanation:

To answer this question, we only need to find the slope of each equation. The formula for slope is attached in a picture.

LINE A

Substituting the first line into the formula, we will get...

(2 - 5)/(0 -(-4))

-3/4

LINE B

Substituting the second line's points into the formula we will get...

(2 - 6)/(3 - 6)

-4/-3

4/3

LINE C

Substituting the third line's points into the formula we will get...

(3 -(-1)/(0 -(-3))

4/3

So, parallel lines have the same slope, right? Since line b and line c have the same slope, they are parallel.

And, perpendicular lines have negative reciprocal slopes, right? (reciprocal means x/y -> y/x) Since -3/4 and 4/3 are negative reciprocals of each other, they are perpendicular.

Therefore...

Parallel lines: Line B and C

Perpendicular lines: Line A and B; Line A and C

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Two classes have a total of 50 students. One of the classes has 6 more students than the other. How many students are in the lar

Ivahew [28]

Let's say 'x' to number of the students in the smaller class. Since the larger one is 6 more than the smaller one, its number would be 'x+6'. So their sum is equal to

$x+x+6=2x+6$ and we know total is 50 so:
$2x+6=50\\ 2x=50-6\\ 2x=44\\ x=\frac { 44 }{ 2 } \\ x=22$

x is 22 so the larger number 'x+6' is equal to : $x+6=22+6=28$

4 0

3 years ago

Read 2 more answers

En una granja se observa que por 12 patos hay 5 gallinas, por tres gallinas hay 8 pavos ;por 10 pavos hay 9 cerdos. ¿A cuantos p

wolverine [178]

Answer:

7 ducks equals 7 pigs.

Step-by-step explanation:

English Translation

On a farm it is observed that for 12 ducks there are 5 chickens, for three chickens there are 8 turkeys, for 10 turkeys there are 9 pigs. How many ducks equals 7 pigs?

Solution

For 12 ducks, there are 5 chickens

12 ducks = 5 chickens

For 3 chickens, there are 8 turkeys

3 chickens = 8 turkeys

For 10 turkeys, there are 9 pigs

10 turkeys = 9 pigs

We first need to create a direct relationship between ducks and pigs to know how many ducks are equivalent to 7 pigs.

9 pigs = 10 turkeys

8 turkeys = 3 chickens

10 turkeys = (10×3/8) chickens = 3.75 chickens

Hence, 9 pigs = 10 turkeys = 3.75 chickens

9 pigs = 3.75 chickens.

12 ducks = 5 chickens

5 chickens = 12 ducks

3.75 chickens = (3.75×12/5) ducks = 9 ducks.

9 pigs = 3.75 chickens = 9 ducks

9 pigs = 9 ducks.

Hence, 7 pigs = 7 ducks too.

Hope this Helps!!!

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3 years ago

Which of the following are the correct properties of a slope? Check all that apply. A. A negative slope means that the line move

Svetllana [295]

Answer:A and D

Step-by-step explanation: I am smart trust me :)

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3 years ago

Twenty five football players chose to have their hair cut before winter break. If this represents 1/3 of the students on the foo

kow [346]

Answer:

Equation for 'x' is $\frac{1}{3}x=25$ .

There are 75 students in the football team.

Step-by-step explanation:

Let the number of students on the team be 'x'.

Given:

Number of players to have hair cut = 25

Number of players to have hair cut is one-third of the total students in the football team.

So, framing in equation form, we get:

$\frac{1}{3}x=25$

In order to solve this equation for 'x', we have to isolate 'x' on the left hand side.

So, we multiply both sides by 3. This gives,

$3\times \frac{x}{3}=25\times 3\\\\x=75$

Therefore, there are 75 students in the football team.

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3 years ago

-4-(-3) = -1 K 1 t) Rewatch Submit

Alex_Xolod [135]

Answer:

-1

Step-by-step explanation:

-4-(-3) ---> -4+3 = -1

8 0

3 years ago