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Juliette [100K]
3 years ago
5

Find the solution(s) to the system of equations. Select all that apply. y=x² - 4 y = -x-2

Mathematics
1 answer:
Andrej [43]3 years ago
5 0

Answer:

x=1, y= -3

x= -2 y=0

Step-by-step explanation:

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Help needed
RoseWind [281]
<span>f(x)= x³-x²-9x+9 has x², so it will be many to one function ( one value of y will correspond several values of x).

Answer is B.</span>

6 0
3 years ago
Question 8 Find the unit vector in the direction of (2,-3). Write your answer in component form. Do not approximate any numbers
slamgirl [31]

Answer:

The unit vector in component form is \hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}}  \right) or \hat{u} = \frac{2}{\sqrt{13}}\,i-\frac{3}{13}\,j.

Step-by-step explanation:

Let be \vec u = (2,-3), its unit vector is determined by following expression:

\hat {u} = \frac{\vec u}{\|\vec u \|}

Where \|\vec u \| is the norm of \vec u, which is found by Pythagorean Theorem:

\|\vec u\|=\sqrt{2^{2}+(-3)^{2}}

\|\vec u\| = \sqrt{13}

Then, the unit vector is:

\hat{u} = \frac{1}{\sqrt{13}} \cdot (2,-3)

\hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}}  \right)

The unit vector in component form is \hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}}  \right) or \hat{u} = \frac{2}{\sqrt{13}}\,i-\frac{3}{13}\,j.

6 0
3 years ago
Which model represents the factors of x^2 + 9x+8?​
grandymaker [24]

Answer:

Step-by-step explanation:

x² + 9x+8 = (x+1)(x+8)

6 0
3 years ago
Please help I think I picked the wrong answer !!
insens350 [35]

Answer:

one solution

Step-by-step explanation:

it has one solution because the slopes of the two equations(1x & 2x) are different, which means the lines of the two equations are not parallel, they have an intersection point(also means one solution).

6 0
3 years ago
1/8 divided by 11/4 in a fration
lisabon 2012 [21]

Answer:

The answer is 1/22.

Step-by-step explanation:

→ (1/8) ÷ (11/4)

→ (1/8) × (4/11)

→ (1×4)/(8×11)

→ 4/88

→ 1/22 [Simplest form]

Thus, 1/22 is the solution.

5 0
3 years ago
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