All categories

3 years ago

What do I do on this problem please help

Mathematics

1 answer:

Volgvan3 years ago

8 0

Turn your paper 90 degrees to the left, this will make the y-axis the x-axis and the x-axis the y- axis. Now list the coordinates of the points

You might be interested in

Which inequality is equivalent to this one? Y-8≤-2

Arlecino [84]

Answer:

y-8+8

Step-by-step explanation:

6 0

3 years ago

Help pleasee! Thank uu

ololo11 [35]

Answer:

The answer is the 2nd option

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Find the roots of:

Elena-2011 [213]

$\large\displaystyle\text{$\begin{gathered}\sf \pmb{1) \ 2x^3-7x^2+8x-3=0 } \end{gathered}$}$

Synthetic division is used since the equation is of the third degree. The divisors of -3 are 1, -1, 3, +3. So:

| 2 -7 8 -3

1 | 2 -5 3

| 2 -5 3 0

1 | 2 -3

2 -3 0

So the factorization is (x-1)² (2x-3)=0. So:

$\bf{ x_1=x_2=1 \qquad x_2=\dfrac{3}{2} }$

$\large\displaystyle\text{$\begin{gathered}\sf \pmb{2) \ x^3-x^2-4=0 } \end{gathered}$}$

Synthetic division is used since the equation is of the third degree. The divisors of -4 are 1, -1, 2, -2, 4, -4. So:

| 1 -1 0 -4

2 | 2 2

1 2 2 0

So the factorization is (x-2)(x²+x+2)=0 . When calculating the discriminant of the trinomial, it is concluded that it has no roots since the result is negative. So you only have one solution.

$\bf{ 1^2-4(2)(2)=1-16=-15 < 0 \quad \Longrightarrow \quad x=2 }$

$\large\displaystyle\text{$\begin{gathered}\sf \pmb{3) \ 6x^3+7x^2-9x+2=0 } \end{gathered}$}$

Synthetic division is used since the equation is of the third degree. The divisors of 2 are 1, -1, 2, -2. So:

| 6 7 9 2

-2 | -12 10 -2

6 -5 1 0

So the factorization is (x+2)(6x²-5x+1)=0 . The quadratic equation is solved by the general formula:

$\bf{ x_{2, 3}&=\dfrac{5\pm \sqrt{(5)^2-4(6)(1)}}{2(6)}=\dfrac{5\pm \sqrt{25-24}}{12}=\dfrac{5\pm 1}{12} }}$

$\large\displaystyle\text{$\begin{gathered}\sf \begin{matrix} x_1=-2&\ \ \ \ \ \ x_{2}=\dfrac{6}{12} \qquad &\ \ \ x_3=\dfrac{4}{12}\\ &\ \ \ x_2=\dfrac{1}{2} \qquad &x_3=\dfrac{1}{3} \end{matrix} \end{gathered}$}$

6 0

2 years ago

What two numbers multiply to -18 and and add to -7

zaharov [31]

Answer:

2 and -9

Step-by-step explanation:

8 0

3 years ago

Find the point slope equation for the line that passes through the points (2,1) and (-2,5).

SVEN [57.7K]

Answer:

y-1=-x+2

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(5-1)/(-2-2)

m=4/-4

m=-1

y-y1=m(x-x1)

y-1=-1(x-2)

y-1=-x+2

7 0

3 years ago