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4 years ago

The point (-1,-4) is on the line given by which equation below ?

Mathematics

2 answers:

hammer [34]4 years ago

8 0

Answer:

Step-by-step explanation:

To determine which line the point lies on , substitute the x-coordinate into the equation and if the value of y corresponds to the y-coordinate then the point lies on the line

y = x - 4 = - 1 - 4 = - 5 ⇒ point does not lie on the line

y = - 4x = - 4 × - 1 = 4 ⇒ point does not lie on the line

y = x + 4 = - 1 + 4 = 3 ⇒ point does not lie on the line

y = 4x = 4 × - 1 = - 4 ⇒ point lies on the line

Vlad1618 [11]4 years ago

4 0

Answer:

D. y = 4x

Step-by-step explanation:

y = 4x

Plug in The point (-1,-4) into the equation

when x = -1, y = 4(-1) = -4

So (-1,-4) is the solution of y = 4x

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Brian, Tim and Kenny got paid a total of $240 for mowing neighborhood lawns. They split the money in the ratio of 5: 9: 10. A) H

Ber [7]

Answer:

The answer to your question is $40

Step-by-step explanation:

Data

Total payment = $240

Proportions Brian: Tim: Kenny 5:9:10

Process

1.- Sum the proportions

5 + 9 + 10 = 24

2.- Divide the total payment by the previous result

240 / 24 = 10

3.- Determine the money that every neighbor earn

Brian = 10 x 5 = 50

Tim = 9 x 10 = 90

Kenny = 10 x 10 = 100

4.- Determine how much less did Brian make than Tim.

90 - 50 = 40

5.- Conclusion

Brian made $40 less than Brian

4 0

3 years ago

Halla la suma de los infinitos términos de la progresión geométrica si r= 1/5 y a1=1/2

Musya8 [376]

Answer:

5/8

Step-by-step explanation:

Aquí, queremos encontrar la suma al infinito de la progresión geométrica, dado el primer término y la razón común Matemáticamente, eso sería;

S = a/1-r

S = 1/2/(1-1/5)

S = 1/2/4/5

S = 1/2 * 5/4

S = 5/8

5 0

3 years ago

Ratio equal to 90:18

Vadim26 [7]

90:18

divide using 3 on both sides

90:18

30:6

10:2

now lets use 2

10:2

5:1

5:1 is the equal ratio to 90:18

6 0

4 years ago

A young Witch flew her broom 48 miles form her home to a witch festival. Flying with the wind, the trip took 3 hours. Her flight

vekshin1

Using the relation between velocity, distance and time, it is found that:

The speed of the wind is of 2 mph.

The speed of the broom is of 14 mph.

<h3>What is the relation between velocity, distance and time?</h3>

Velocity is <u>distance divided by time</u>, hence:

$v = \frac{d}{t}$

Flying with the wind, in which $v = v_b + v_w$ the 48-mile trip took 3 hours, hence:

$v = \frac{d}{t}$

$v_b + v_w = \frac{48}{3}$

$v_b + v_w = 16$

Her flight home against the wind took 4 fours, hence:

$v = \frac{d}{t}$

$v_b - v_w = \frac{48}{4}$

$v_b - v_w = 12$

Adding the two equations:

$2v_b = 28$

$v_b = 14$

$v_b + v_w = 16 \rightarrow v_w = 2$

Hence:

The speed of the wind is of 2 mph.

The speed of the broom is of 14 mph.

More can be learned about the relation between velocity, distance and time at brainly.com/question/24316569

4 0

3 years ago

Equations that are equivalent to 5x+30=45

Mamont248 [21]

Answer:

Step-by-step explanation:

5x+30=45

5x+30 -30=45 -30

5x =15

divid by 5 : x =3

equations that are equivalent to 5x+30=45 are : 5x =15 and x =3

5 0

3 years ago