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bixtya [17]
3 years ago
8

The Green Line circles the station every 9 minutes. The red live circles the station every 6 minutes. If they leave the station

together, how long will it be until the next time that they leave the station together again?
Please explain

A) 15 minutes

B) 18 minutes

C) 36 minutes

D) 54 minutes
Mathematics
1 answer:
maria [59]3 years ago
4 0
D) Because if you do 9 *6 you get 54 minutes until the next time.



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Determine whether LINE AB and LINE CD are parallel, perpendicular, or neither. A(−1, −4) , B(2, 11) , C(1, 1) , D(4, 10) ( write
Luba_88 [7]

Step-by-step explanation:

Hey there!

The points of line AB are; (-1,-4) and (2,11).

Note:

  • Use double point formula and simplify it to get two eqaution.
  • Use condition of parallel lines, perpendicular lines to know whether the lines are parallel or perpendicular or nothing.

~ Use double point formula.

(y - y1) =  \frac{y2 - y1}{x2 - x1} (x - x1)

~ Keep all values.

(y  + 4) =  \frac{11 + 4}{2 + 1} (x + 1)

~ Simplify it.

y + 4 =  \frac{15}{3} (x + 1)

y + 4 = 5x + 5

5x - y + 1 = 0

Therefore this is the equation of line AB.

Now, Finding the equation of line CD.

Given;

The points of line CD are; (1,1) and (4,10).

~ Using formula.

(y - y1) =  \frac{y2 - y1}{x2 - x1}(x - x1)

~ Keep all values.

(y - 1) =  \frac{10 - 1}{4 - 1} (x - 1)

~ Simplify it.

y - 1 = 3 x - 3

3x - y - 2 = 0

Therefore, 3x - y- 2 = 0 is the eqaution of line CD.

Use condition of parallel lines.

m1= m2

Slope of equation (i)

m1 =  \frac{ - coeff. \: of \: x}{coeff \: of \: y}

m1 =  \frac{ - 5}{ - 1}

Therefore, m1 = 5

Slope of second equation.

m2 =  \frac{ - coeff \: .of \: x}{coeff \: .of \: y}

m2 =   \frac{ - 3}{ - 1}

Therefore, m2 = 3.

Now, m1≠m2.

So, the lies are not parallel.

Check for perpendicular.

m1*m2= -1

3*5≠-1.

Therefore, they aren't perpendicular too.

So, they are neither.

<em><u>Hope </u></em><em><u>it</u></em><em><u> helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

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3 years ago
Julio is selecting a random sample of people to survey for a newspaper article. Which elements are important for Julio to consid
Fofino [41]

Answer:

Step-by-step explanation:

Answer:

It say the size of population characteristics

Step-by-step explanation:

Because  it makes sense those are I need

5 0
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Please help me i’ll give u a brainliest
S_A_V [24]

Answer:

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How do I count by twelfths
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12,  x 1 = 12

12 x 2 =24  

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8 0
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A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the
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At day 0 the height of the plant = 12 cm

Calculate how many days  to get to 16.13 cm:-
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1.03^n = 16.13 / 12 = 1.34417
n = ln 1.34417 / ln 1.03  = 10  days

I would think that a reasnable domain would be   0 =< n <= 100
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