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3 years ago

9

When solving the equation x/5 - 12 = 10, what is your last step?

1 answer:

irinina [24]3 years ago

6 0

Answer:

c

Step-by-step explanation:

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Find all roots x^5-2x^3-8x=0

kobusy [5.1K]

X^5 - 2 x^3 - 8 x=0x (x - 2) (x + 2) (x^2 + 2) = 0
x - 2 = 0 or x = 0 or x + 2 = 0 or x^2 + 2 = 0
x = 2 or x = 0 or x = - 2 or x^2 = - 2
x^2 = - 2 has no solution since for all x on the real line, x^2 >= 0 and - 2 < 0

Ans : x = 2 or x = 0 or x = - 2

7 0

3 years ago

Write and solve a problem using completing the square method.

pochemuha

Answer:

x2 + 6x + 7 into x2 + 2dx + d2 + e

x^2 + (6x) + [7] matches x^2 + (2dx) + [d^2+e]

Step-by-step explanation:

8 0

4 years ago

Evaluate f(9) given f(x)=-x+7

Nina [5.8K]

Answer:

f(9)=-2

Step-by-step explanation:

f(9)= -9+7= -2

5 0

3 years ago

kotykmax [81]

Answer:

$\displaystyle y=-\frac{1}{2}x+\frac{11}{2}$

Step-by-step explanation:

<u>Equation of the Line</u>

A line of slope m and y-intercept b can be expressed by the equation:

$y=mx+b$

The given line has the equation:

$8x-4y=-24$

Let's express it in the correct form:

$-4y=-24-8x$

Dividing by -4

$y=2x+6$

The slope of this line is m1=2. To find the slope m2 of a line perpendicular to this one, we use the following equation:

$m_1.m_2=-1$

Solving for m2:

$\displaystyle m_2=-\frac{1}{m_1}$

$\displaystyle m_2=-\frac{1}{2}$

The required equation has the form:

$\displaystyle y=-\frac{1}{2}x+b$

To find b, we use the point (3,4) through which the line passes:

$\displaystyle 4=-\frac{1}{2}(3)+b$

$\displaystyle b=4+\frac{3}{2}=\frac{11}{2}$

Thus the equation of the line is:

$\boxed{\displaystyle y=-\frac{1}{2}x+\frac{11}{2}}$

5 0

3 years ago

Which equations show the associative property?

Ivenika [448]

The 3 answers are A, B and C

6 0

4 years ago