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sleet_krkn [62]
2 years ago
6

Help me? answers por favor ?

Mathematics
2 answers:
goblinko [34]2 years ago
6 0
The answer to 21 is Never true because a supplementary angle always adds up to 180 degrees and obtuse angles are angles MORE than 90 degrees and 91 + 91 wouldn't make it supplementary.
dem82 [27]2 years ago
3 0
<span>Please, post only one question at a time.

The line passing through (1,4) and (-4,-1) has the following slope:

          -1 - 4          -5
m = ------------ = -------- = +1
          -4 - 1          -5

Find the slope of the line passing thru the other set of points.  Graph both lines.  What do you see?  Do the 2 lines have any particular relationship to one another?

</span>
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Write an equation for a quadratic function that has x intercepts (-3, 0) and (5, 0)
Blizzard [7]

Answer:

One possible equation is f(x) = (x + 3)\, (x - 5), which is equivalent to f(x) = x^{2} - 2\, x - 15.

Step-by-step explanation:

The factor theorem states that if x = x_{0}  (where x_{0} is a constant) is a root of a function, (x - x_{0}) would be a factor of that function.

The question states that (-3,\, 0) and (5,\, 0) are x-intercepts of this function. In other words, x = -3 and x = 5 would both set the value of this quadratic function to 0. Thus, x = -3\! and x = 5\! would be two roots of this function.

By the factor theorem, (x - (-3)) and (x - 5) would be two factors of this function.

Because the function in this question is quadratic, (x - (-3)) and (x - 5) would be the only two factors of this function. In other words, for some constant a (a \ne 0):

f(x) = a\, (x - (-3))\, (x - 5).

Simplify to obtain:

f(x) = a\, (x + 3)\, (x - 5).

Expand this expression to obtain:

f(x) = a\, (x^{2} - 2\, x - 15).

(Quadratic functions are polynomials of degree two. If this function has any factor other than (x - (-3)) and (x - 5), expanding the expression would give a polynomial of degree at least three- not quadratic.)

Every non-zero value of a corresponds to a distinct quadratic function with x-intercepts (-3,\, 0) and (5,\, 0). For example, with a = 1:

f(x) = (x + 3)\, (x - 5), or equivalently,

f(x) = x^{2} - 2\, x - 15.

6 0
2 years ago
Which of the following will be constructed when the two endpoints of a line segment are folded so that they line up
nataly862011 [7]
B. Midpoint of a line segment
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3 years ago
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Shadow Software company earned a total of 800,009 selling programs during the year 2012. 125,300 of taht amount was used to pay
Softa [21]
Subtract 125,300 from 800,009. From there you find that they made 674,709 in profit. Answer is 674,709
6 0
3 years ago
Please someone help me (NO LINKS) (NO LYING)
romanna [79]
Number one 42 cubes .
6 0
3 years ago
Read 2 more answers
Rita is thinking of two numbers. Adding 4 times the first number and 9 times the second number gives a total of 1. Also, adding
charle [14.2K]

Answer:

first number is negative 2, second is 1

Step-by-step explanation:

-2×4= -8 1×9=9

-8+9=1

-2×4= -8 1×6=6

-8+6= -2

hope this helped

6 0
3 years ago
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