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White raven [17]
4 years ago
11

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

Mathematics
2 answers:
hammer [34]4 years ago
8 0

Answer:

D

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

A

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

B

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

C

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

D

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
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