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2 years ago

- For the given value, state whether the inequality is true or false. -4x + 6 > 15; x = -3

Mathematics

2 answers:

katovenus [111]2 years ago

7 0

$\\ \sf\longmapsto -4x+6>15$

Put x=-3

$\\ \sf\longmapsto -4(-3)+6>15$

$\\ \sf\longmapsto 12+6>15$

$\\ \sf\longmapsto 18>15$

It's true

never [62]2 years ago

4 0

Answer:

true

Step-by-step explanation:

-4(-3) + 6 > 15

12+6 > 15

18 > 15

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Use The four step process to find the slope of the tangent line to the graph of the given function at any point. ( simplify your

hodyreva [135]

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The answer to your question is: 16x + 3

Step-by-step explanation:

Step 1 : f(x) = 8x² + 3x

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3 years ago

Determine (a) the slope of the line parallel to the line whose slope is m=2 and (b) the slope of the line perpendicular to the l

kotykmax [81]

Answer:

(b) $\displaystyle -\frac{1}{2} = m$

(a) $\displaystyle 2 = m$

Step-by-step explanation:

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3 years ago

-x^2+4x-8 axis of symmerty

V125BC [204]

Answer:

$\boxed {\boxed {\sf x=2}}$

Step-by-step explanation:

The axis of symmetry can be calculated using the formula:

$x=\frac{-b}{2a}$

First we must determine a and b from the quadratic: $-x^2+4x-8$ . This is in standard form, with the highest power first in descending order.

Standard form is also: $ax^2+bx+c$

If we compare this to the quadratic given, we can conclude that:

$a= -1 \\b= 4 \\c= -8$

Substitute the values for a and b into the formula.

$x= \frac{-(4)}{2(-1)}$

Multiply in the denominator.

$x=\frac {-4}{-2}$

Divide.

$x=2$

This can also be determined from the graph. It is the x-coordinate of the vertex or the maximum/minimum. It divides the quadratic into 2 symmetrical halves.

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3 years ago