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3 years ago

If f(x) = 2x2 – x,what is f(-6)?

Mathematics

1 answer:

lisov135 [29]3 years ago

7 0

Answer:

your answer would be -58

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Write the equation of a line that is perpendicular to y = 5 and that passes through the point (-7,-5).

Alik [6]

Answer: x = -7

Step-by-step explanation:

x = -7 will be a vertical line passing through all y values, and perpendicular to y = 5

The attached graph shows the lines and the point.

7 0

3 years ago

Math help please help

larisa [96]

It’s c or d because

4 0

2 years ago

What is the range of the function y=cot(x)?

dimulka [17.4K]

Answer:

(−∞,+∞)

Step-by-step explanation:

The cotangent function can take up any values depending on the value of

, the independent variable.

And thus, the range

(

−

∞

)

is justified.

The domain is all real numbers other than integral multiples of

where, the function is not defined.

5 0

2 years ago

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Write the equation of the line in slope intercept form (y=mx+b) that passes through the point (-3,5) and has a slope of 2

MakcuM [25]

Answer:

no sorry

Step-by-step explanation:

for you question there needs to be a picture

4 0

2 years ago

Use the quadratic formula to solve the equation.

Sergeeva-Olga [200]

ANSWER

$x = \frac{ 5 - \sqrt{ 5} }{4} \: or \: \: x = \frac{ 5 + \sqrt{ 5} }{4}$

EXPLANATION

The given quadratic equation is

$4 {x}^{2} - 10x + 5 = 0$

We compare this to

$a {x}^{2} + bx + c = 0$

to get a=4, b=-10, and c=5.

The quadratic formula is given by

$x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac} }{2a}$

We substitute these values into the formula to get:

$x = \frac{ - - 10 \pm \sqrt{ {( - 10)}^{2} - 4(4)(5)} }{2(4)}$

This implies that

$x = \frac{ 10 \pm \sqrt{ 100 - 80} }{8}$

$x = \frac{ 10 \pm \sqrt{ 20} }{8}$

$x = \frac{ 10 \pm2 \sqrt{ 5} }{8}$

$x = \frac{ 5 \pm \sqrt{ 5} }{4}$

The solutions are:

$x = \frac{ 5 - \sqrt{ 5} }{4} \: or \: \: x = \frac{ 5 + \sqrt{ 5} }{4}$

7 0

3 years ago

Read 2 more answers