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Andreas93 [3]
3 years ago
9

What is x squared minus 4x minus 45

Mathematics
1 answer:
Mazyrski [523]3 years ago
3 0

That's a second-degree expression in 'x'.  It represents a number,
but the number it represents completely depends on the value of 'x'. 
And if the value of 'x' ever changes, then the value of the whole
expression instantly changes.

The expression is also the product of   (x + 5)  and  (x - 9) .
 
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Sage hiked from the start of the trail to look out point. she then hiked back to giant boulder to camp for the night. what was t
Stolb23 [73]
Distance from start to look out point is calculated below
                                          d1 = 8 3/4 miles - 0 miles = 8 3/4
Distance from look out point to giant boulder is,
                                          d2 = 8 3/4 miles - 4 1/4 miles = 9/2 miles = 4.5 miles
Thus, the answer is equal to 4 1/2 miles. The answer is letter C. 
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3 years ago
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Write the equation of the line in slope-intercept form that has the following points: (2, -1)(5, -3)
kirza4 [7]

Answer:

\large\boxed{y=-\dfrac{2}{3}x+\dfrac{1}{3}}

Step-by-step explanation:

The skope-intercept form:

y=mx+b

m - slope

b - y-intercept

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the points (2, -1) and (5, -3). Substitute:

m=\dfrac{-3-(-1)}{5-2}=\dfrac{-3+1}{3}=\dfrac{-2}{3}=-\dfrac{2}{3}

We have the equation:

y=-\dfrac{2}{3}x+b

Put the coordinates of the point (2 , -1) to the equation:

-1=-\dfrac{2}{3}(2)+b

-1=-\dfrac{4}{3}+b           <em>add 4/3 to both sides</em>

\dfrac{1}{3}=b\to b=\dfrac{1}{3}

Finally we have:

y=-\dfrac{2}{3}x+\dfrac{1}{3}

6 0
4 years ago
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Answer: The vertex is (-3, 2)

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I rewrote x+3 as x - (-3)

Compare y = -4(x - (-3))^2 + 2 with the general template y = a(x-h)^2 + k

Note how

a = -4

h = -3

k = 2

So the vertex is (h,k) = (-3, 2)

5 0
3 years ago
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Kazeer [188]

Answer:

7 because 24-10=4+3=7

Step-by-step explanation:

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