Help me get the answer to this

2x² – xy - 15y2<br> How to factor by grouping

dsp73

Answer:

(2x + 5y) (x - 3y)

Step-by-step explanation:

Hope this helps!

6 0

2 years ago

Which of these lines is perpendicular to the line y = 3x + 2?

Morgarella [4.7K]

Answer:

(c) $y=\frac{-1}{3}x+4$ will be perpendicular to the line y = 3x+2

Step-by-step explanation:

We have given the the equation of line as y = 3x+2

We know the equation of line as y = mx+c , here m is slope and c is intercept

On comparing with standard equation of line m = 3

We know that slope of perpendicular line is $=\frac{-1}{m}$

So the slope of the line which is perpendicular to y = 3x+2 will be $=\frac{-1}{3}$

Now (a) Line is given as $y=\frac{1}{3}x+3$ its slope is $\frac{1}{3}$ so it will be not perpendicular

(b) Line is given as $y=\frac{1}{3}x+2$ its slope is $\frac{1}{3}$ so it will be not perpendicular

(c) Line is given as $y=\frac{-1}{3}x+4$ its slope is $\frac{-1}{3}$ so it will be perpendicular to the line y = 3x+2

(d) Line is given as $y=3x+\frac{1}{2}$ its slope is 3 so it will not perpendicular to the line y = 3x+2

3 0

2 years ago

A class is putting ornaments on a Christmas tree.

eimsori [14]

Answer:

each ornament was about 5 cents

Step-by-step explanation:

Hope this helps

May I get Braineist pls

5 0

2 years ago

(3x² - 4x+8) + (-7² - 27-8)

iragen [17]

Answer:

3x^ - 4x - 76

Step-by-step explanation:

4 0

3 years ago

Let f(x) = .............

galben [10]

Answer:

4

Step-by-step explanation:

g(3) = -2(3)^2 -4 = 2(9) -4 = 18-4 = 14

|f(2)| = | 2^2 -3| = | 4-3| = 1

(g(3) +2) = (14+2) = 16

4* |f(2)| = 4*1 = 4

16/4 = 4

5 0

3 years ago