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Makovka662 [10]

3 years ago

7

W(a) = -2a – 4; Find w(-6)

2 answers:

jeyben [28]3 years ago

7 0

Answer:

w(-6) = 8

Step-by-step explanation:

w(a) = -2a – 4

Let a = -6

w(-6) = -2(-6) – 4

Multiply

= 12 -4

Subtract

= 8

Ray Of Light [21]3 years ago

5 0

Answer:

...

Step-by-step explanation:

w(a) = -2a - 4

w(-6) = <em>subsitute value</em> // -2(-6) - 4 = 12 - 4 = 8

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What is the equation of the line that passes through the point (8,1) and has a slope of 3/4

iris [78.8K]

Answer:

believe the answer is

$y = \frac{3}{4} x - 5$

Step-by-step explanation:

Hope this helps!

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3 years ago

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Kisachek [45]

So, I'm going to break it down to help you understand it a bit more.

If it starts at (0,-2) and crosses through (1,0) that means it moved to the right once and up twice. Which means, that the slope will be 2. If it were one it would be to the right 1 up one, if it were 4 it would be to the right 1 up 4, and finally if it were 1/2 it would be to the right 2 up 1.

So, your answer is C. or 2.

7 0

3 years ago

Which equation is y = 9x2 + 9x – 1 rewritten in vertex form?

Anastasy [175]

Answer:

$y = 9(x +\frac{1}{2}) ^ 2 -\frac{13}{4}$

Step-by-step explanation:

An equation in the vertex form is written as

$y = a (x-h) + k$

Where the point (h, k) is the vertex of the equation.

For an equation in the form $ax ^ 2 + bx + c$ the x coordinate of the vertex is defined as

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

In this case we have the equation $y = 9x^2 + 9x - 1$ .

Where

$a = 9\\\\b = 9\\\\c = -1$

Then the x coordinate of the vertex is:

$x = -\frac{9}{2(9)}\\\\x = -\frac{9}{18}\\\\x = -\frac{1}{2}$

The y coordinate of the vertex is replacing the value of $x = -\frac{1}{2}$ in the function

$y = 9 (-0.5) ^ 2 + 9 (-0.5) -1\\\\y = -\frac{13}{4}$

Then the vertex is:

$(-\frac{1}{2}, -\frac{13}{4})$

Therefore The encuacion excrita in the form of vertice is:

$y = a(x +\frac{1}{2}) ^ 2 -\frac{13}{4}$

To find the coefficient a we substitute a point that belongs to the function $y = 9x^2 + 9x - 1$

The point (0, -1) belongs to the function. Thus.

$-1 = a(0 + \frac{1}{2}) ^ 2 -\frac{13}{4}$

$-1 = a(\frac{1}{4}) -\frac{13}{4}\\\\a = \frac{-1 +\frac{13}{4}}{\frac{1}{4}}\\\\a = 9$

<em>Then the written function in the form of vertice is</em>

$y = 9(x +\frac{1}{2}) ^ 2 -\frac{13}{4}$

7 0

3 years ago

Number 15<br> Please help I need to turn this in today!

strojnjashka [21]

Answer:

d is equal to or greater than 9

Step-by-step explanation:

Subract thirteen from both sides of the equation.

5 0

3 years ago

5. George walks to a friend's house. He walks 750 meters North, then realizes

grin007 [14]

Answer:

76.9

Step-by-step explanation:

5= d/t = 1000m/135 =76.9

8 0

3 years ago