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Liula [17]
4 years ago
14

PLEASE HELP !!!!!!!!!!​

Mathematics
1 answer:
Grace [21]4 years ago
3 0

Answer:

y = -0.5x

Step-by-step explanation:

To write the equation of the line, use the formula y = mx where m is the slope. Find the slope by subtracting the x and y coordinates. Use the formula below:

m = \frac{y_2-y_1}{x_2-x_1} = \frac{2--1}{-4 - 2} = \frac{3}{-6} = -\frac{1}{2}

Since the slope is -1/2 or -0.5, this means the equation of the line is y = -0.5x.

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Simplify the expression 2.75j + 2.25 - 1.5j + 3
Katarina [22]
1.25j+5.25 would be the answer. just combine like terms
3 0
3 years ago
Subtract polynomials (intro)
ELEN [110]

Answer:

The result in standard form is:

\left(-5t+4t^2-t\right)-\left(8t^2+t\right)=-4t^2-7t

Step-by-step explanation:

Given the polynomials

  • -5t+ 4t² – t
  • 8t² + t

subtracting 8t² + t from -5t+ 4t² – t.

\left(-5t+\:4t^2\:-\:t\right)\:-\:\left(8t^2\:+\:t\right)

Remove parenthese: (-a) = -a

i.e. - (8t² + t) = 8t² - t

so the expression becomes

=-5t+4t^2-t-8t^2-t        

grouping the like terms

=4t^2-8t^2-5t-t-t

Add similar elements: 4t² - 8t² = -4t²

=-4t^2-5t-t-t

Add similar elements: -5t - t - t = -7t

=-4t^2-7t

Therefore, the result in standard form is:

\left(-5t+4t^2-t\right)-\left(8t^2+t\right)=-4t^2-7t

4 0
3 years ago
Solve the following equation by transforming it into a perfect square trinomial.* 3x2 + 12x = 63
Eddi Din [679]
3x^2 + 12x = 63\\ \\3x^2+12x-63=0\\ \\3(x^2+4x-21)=0\\ \\3[x^2+4x+3x-3x-21] =0 \\ \\3[x^2+7x-3x-21] =0 \\ \\3[x(x +7 )-3(x+7)] =0

3 (x +7 ) (x-3) =0 \\ \\x+7=0 \ \ \ or \ \ \ x-3 =0\\ \\x=-7 \ \ \ or \ \ \ x=3
 

6 0
4 years ago
-6x+5y=1 and 6x+4y=10.substitution
nexus9112 [7]

Answer:

(23/27, 11/9)

Step-by-step explanation:

Given the simultaneous equation;

-6x+5y=1..... 1

6x+4y=10.... 2

Add both equations

5y + 4y = 1+10

9y = 11

y = 11/9

Substitute y = 11/9 into 1;

From 1;

-6x+5y=1.

-6x + 5(11/9) = 1

-6x + 55/9 = 1

-6x = 1- 55/9

-6x = (9-55)/9

-6x = -46/9

x = -46/-54

x = 23/27

The solution to the system of equation is (23/27, 11/9)

8 0
3 years ago
Write the following numbers in order from least to greatest.
brilliants [131]
All together for this one?
3 0
4 years ago
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