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3 years ago

Help please =] Solve system of equations using any method 2x-6y=8 and 2x-6y=3

2 answers:

6 0

Let z be any number (like x would be)

if we set z equal to 2x-6y, then we get z = 2x-6y

The system

2x-6y = 8
2x-6 = 3

turns into this new system

z = 8
z = 3

but z is a single number. It can't be both 8 and 3 at the same time. So there are no solutions

romanna [79]3 years ago

3 0

The answer is no solution. If you use elimination, by subtracting the second equation from the first, you come out with 0=5, which is a false statement. Therefore, there is no solution.

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You are asked to draw a triangle using three of the following angles: 0°, 30°, 45°, 55°, 60°, 80°, 90°, 105°. Which triangle can

Elena-2011 [213]

Answer:

Step-by-step explanation:

When you add all the the angles of a triangle, they will end up to be exactly 180 degree. When you add the three numbers A, B, and C end up with 180 degree, but D end up with 130 degree, therefore, D is the triangle that cannot exist.

Hope it helps :D

5 0

3 years ago

A line passes through the points (1, 4) and (3, –4). Which is the equation of the line?

horsena [70]

Answer:

The equation of line passing through points (1 , 4) and (3 , - 4) is y = - 4 x + 8

Step-by-step explanation:

Given as :

A line is passing through points

$x_1$ , $y_1$ = 1 , 4

$x_2$ , $y_2$ = 3 , - 4

Now, Equation of line in point-slope form is

y - $y_1$ = m × (x - $x_1$ )

where m is the slope of line

∵ m = $\dfrac{y_2 - y_1}{x_2 - x_1}$

i.e m = $\dfrac{ ( - 4 ) - 4}{3 - 1}$

Or, m = $\dfrac{ - 8}{2}$

Or, m = - 4

So, The slope of line = m = - 4

∵, equation of line can be written as

y - $y_1$ = m × (x - $x_1$ )

So, Putting the value of slope, m and points ( $x_1$ , $y_1$ )

i.e y - 4 = ( - 4 ) × ( x - 1 )

Or, y - 4 = ( - 4 ) × x + 4

Or, y - 4 = - 4 x + 4

Or, y = - 4 x + 4 + 4

∴ y = - 4 x + 8

So, The equation of line y = - 4 x + 8

Hence, The equation of line passing through points (1 , 4) and (3 , - 4) is y = - 4 x + 8 Answer

8 0

3 years ago

Read 2 more answers

What is |2d-5|=13? For algebra 2

Nata [24]

D would equal to either 9 or －9

7 0

4 years ago

Read 2 more answers

PLEASE HELP THIS IS VERY IMPORTANT I WILL GIVE YOU BRAIN THING IF ITS CORRECT (you can use a calculator if you want)

Rainbow [258]

Answer:

1. B.

2. A, E.

3. D.

Step-by-step explanation:

1. 8.225 ÷ 5 = 1.645

2. 892 ÷ 8 = 111.5

8920 ÷ 80 = 111.5

894 ÷ 10 = 89.4

89.2 ÷ 0.08 = 1115

8.92 ÷ 0.8 = 11.15

0.892 ÷ 0.008 = 111.5

3. 4367 ÷ 0.004 = 1,091,750

6 0

3 years ago

Find a third-degree polynomial equation with rational coefficients that has roots –5 and 6 + i.

Vitek1552 [10]

The coefficients of the polynomial are rational, which means that any non-real roots occur alongside their complex conjugates. In this case, 6+i is a root, so 6-i is also a root.

So the simplest polynomial you can build with these roots is

(x - (-5)) (x - (6 + i )) (x - (6 - i )) = x ^3 - 7x ^2 - 23x + 185

(first choice)

8 0

3 years ago