Factor the expression: -3r - 15

Mathematics

2 answers:

PIT_PIT [208]2 years ago

7 0

Answer: the answer for this is -3 ( r + 5 )

Step-by-step explanation:

-3r - 15

3r - 3 * 5

-3 ( r + 5 )

iren2701 [21]2 years ago

5 0

Answer:

-3(r+5)

Step-by-step explanation:

............

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4 - (y - 3) = 3(y + 1) - 4(1 - y)

s344n2d4d5 [400]

Answer:

The value of y is 1

Step-by-step explanation:

4 - (y - 3) = 3(y + 1) - 4(1 - y)

4 - y + 3 = 3y + 3 - 4 + 4y

7 - y = 7y - 1

7 + 1 = 7y + y

8y = 8

y = 1

Thus, The value of y is 1

-TheUnknownScientist 72

4 0

2 years ago

A line passes through (10,4) and (13,-11). Write the equation of the line in standard form.

AlexFokin [52]

$\bf (\stackrel{x_1}{10}~,~\stackrel{y_1}{4})\qquad (\stackrel{x_2}{13}~,~\stackrel{y_2}{-11}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-11-4}{13-10}\implies \cfrac{-15}{3}\implies -5 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-4=-5(x-10)$