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2 years ago

Please help I am struggling with these problems

Mathematics

2 answers:

laila [671]2 years ago

8 0

It is the first option

brilliants [131]2 years ago

4 0

Answer: the first one

Step-by-step explanation:

I just know

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Simplifying rational expressions

Sonbull [250]

1. $\frac{(c + 8)(c - 8)}{(c - 8)(c + 3)}_,_$
   $\frac{c + 8}{c + 3}_,_$

2. $\frac{n^{2} + 4n - 12}{n^{2} + 2n - 8}_,_$
   $\frac{n^{2} + 6n - 2n - 12}{n^{2} + 4n - 2n - 8}_,_$
   $\frac{n(n) + n(6) - 2(n) - 2(6)}{n(n) + n(4) - 2(n) - 2(4)}_,_$
   $\frac{n(n + 6) - 2(n + 6)}{n(n + 4) - 2(n + 4)}_,_$
   $\frac{(n - 2)(n + 6)}{(n - 2)(n + 4)}_,_$
   $\frac{n + 6}{n + 4}_,_$

3. $\frac{42x^{2}y^{3}}{28x^{3}y}_,_$
   $\frac{3y^{2}}{2x}_,_$

4. $\frac{m^{2} - 3m - 10}{m - 5}_,_$
   $\frac{m^{2} - 5m + 2m - 10}{m - 5}_,_$
   $\frac{m(m) - m(5) + 2(m) - 2(5)}{m - 5}_,_$
   $\frac{m(m - 5) + 2(m - 5)}{m - 5}_,_$
   $\frac{(m + 2)(m - 5)}{m - 5}_,_$
   $m + 2_,_$

3 0

2 years ago

2. Give an example of how you use positive and negative numbers in the real world. Be sure to explain the meaning of 0 in your e

geniusboy [140]

Temperature under 0 Degrees it snows. Also my brain is always right

7 0

3 years ago

Read 2 more answers

How many per laps is that

ale4655 [162]

Do you have a picture so that ik what the track looks like

3 0

3 years ago

Which is the equation of a line that has a slope of -2/3 and passes through point (-3, -1)? y=-2/3x+1.

bazaltina [42]

Answer:

y = -2/3x - 3

Step-by-step explanation:

First, write the equation using the slope. It should look like this: y = -2/3x + b. Next, find the y intercept by plugging in the point. This is what it looks like: -1 = -2/3(-3) + b. Multiply -2/3 by -3 to get 2. This is what it should look like now: -1 = 2 + b. Subtract 3 from both sides to get -3 = b. Go back to your original equation and plug in -3 for b. This is your final equation:

y = -2/3x - 3

Hope this helped! :)

7 0

3 years ago

Lindsay is creating a bridge out of dried pasta and glue. In her plans, she sketches the graph to determine the lengths of the n

alexgriva [62]

From the graph shown it can be seen that the bridge is represented by a parabola with vertex of (5, 8) and roots of 1 and 9.

Recall that the vertex form of the equation of a parabola with vertex (h, k) is given by
$y=a(x-h)^2+k$

Thus, the equation of the given graph in vertex form is given by
$y=a(x-5)^2+8$

Also, recall that the equation of a parabola with roots, p and q, is given by
$y=a(x-p)(x-q)$

Thus the equation of the given graph can be given by
$y=a(x-1)(x-9)$

To get the value of a, we equate both equations and solve as follows:
$a(x-5)^2+8=a(x-1)(x-9) \\ \\ a(x^2-10x+25)+8=a(x^2-10x+9) \\ \\ ax^2-10ax+25a+8=ax^2-10ax+9a \\ \\ 25a-9a=-8 \\ \\ 16a=-8 \\ \\ a=- \frac{8}{16} =- \frac{1}{2}$

Therefore, the <span>function that Lindsay used to create her design is
$f(x)=-0.5(x-5)^2+8$
</span>

4 0

3 years ago

Read 2 more answers

Please help I am struggling with these problems​

Please help I am struggling with these problems