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3 years ago

What is the solution for the system 6x+9y=21 4x-7y=-27

Mathematics

1 answer:

Aleks [24]3 years ago

5 0

Answer:

x= -16/13 y= -41/13 I think

Step-by-step explanation:

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Find the distance between the points (3,-5) and (3,-2).

iren [92.7K]

Answer:

3 units

Step-by-step explanation:

Distance between two points (x1,y1) and (x2,y2) on coordinate plane is given by

distance = $\sqrt{(x1-x2)^2 +(y1-y2)^2 }$

Given points in the problem are (3,-5) and (3,-2).

Thus distance between points (3,-5) and (3,-2).

$distance = \sqrt{(x1-x2)^2 +(y1-y2)^2 }\\=>distance = \sqrt{(3-3)^2 +(-5-(-2))^2 }\\=>distance = \sqrt{(0)^2 +(-5+2)^2 }\\\\=>distance = \sqrt{0 +(-3)^2 }\\\\=>distance = \sqrt{9 }\\=>distance = 3$

Distance between points (3,-5) and (3,-2) is 3 units

3 0

3 years ago

URGENT!! Please divide this polynomial

jok3333 [9.3K]

i used polynomial division.. i hope this helps :)

7 0

2 years ago

The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is five times

almond37 [142]

Answer:

First angle = 30°

Second angle = 60°

Third angle = 90°

Step-by-step explanation:

x + y + z = 180

y + z = 5x

z = y + 30

then:

y + (y+30) = 5x

2y + 30 = 5x

x = (2y+30)/5

then:

x + y + z = 180

{(2y+30)/5} + y + y+30 = 180

{(2y+30)/5} + 2y + 30 = 180

{(2y+30)/5} = 180 - 30 - 2y

{(2y+30)/5} = 150 - 2y

2y+30 = 5(150-2y)

2y+30 = 5*150 + 5*-2y

2y+30 = 750 - 10y

2y + 10y = 750 - 30

12y = 720

y = 720/12

y = 60°

x = (2y+30)/5

x = (2*60 + 30)/5

x = (120+30)/5

x = 150/5

x = 30°

z = y + 30

z = 60 + 30

z = 90°

Check:

x + y + z = 180°

30° + 60° + 90° = 180°

7 0

3 years ago

Please answer the question

Lunna [17]

A since 19 x 29= 551 and 551/375 is around 1.5

4 0

3 years ago

In 1 and 2, list multiples of each number to find the LCM of each pair of number.

Tanya [424]

Multiples of 2:

2, 4, 6, 8, 10, 12, 14, 16, 18, 20,...

Multiples of 5:

5, 10, 15, 20, 25, 30, 35, 40, ...

Multiples of 6:

6, 12, 18, 24, 30, 36, 42, 48, 54, 60, ...

Multiples of 10:

10, 20, 30, 40, 50, 60, ...

6 0

2 years ago