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dsp73
3 years ago
9

Expand and simply (x + 3) (x + 5)

Mathematics
1 answer:
kifflom [539]3 years ago
4 0
Here’s the answer :)

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How do you do this!?!
Andrei [34K]

11x + y = 4

<u>x  |   y</u>

0  |   4

\frac{4}{11} |   0

<em>plot the y-intercept (0, 4) and the x-intercept (\frac{4}{11}, 0) </em>

or

11x + y = 4

<u>-11x      </u>  <u>-11x </u>

      y = -11x + 4      ⇒ m = \frac{-11}{1}, b = 4

<em>plot at point the y-intercept "b = 4" (0,4).  plot the next point using the slope "m = \frac{-11}{1}" from point (0,4), count down 11 and to the right 1 (1,-7).</em>

Using intercepts would not provide an accurate graph because you have to estimte where (\frac{4}{11}, 0) is, so it is best to use slope-intercept form.

***********************************************************************************************************

x + y = -2

<u>x  |   y</u>

0  |  -2

-2 |   0

<em>plot the y-intercept (0, -2) and the x-intercept (-2, 0)</em>

or

x + y = -2

<u>-x      </u>  <u> -x </u>

     y = -x - 2     ⇒ m = \frac{-1}{1}, b = -2

<em>plot at point the y-intercept "b = -2" (0,-2).  plot the next point using the slope "m = \frac{-1}{1}" from point (0,-2), count down 1 and to the right 1 (1,-3).</em>

Both methods are easy to use so either can be used.

**********************************************************************************************************

x - 2y = 18

<u>x  |   y</u>

0  |  -9

18 |   0

<em>plot the y-intercept (0, -9) and the x-intercept (18, 0)</em>

or

x - 2y = 18

<u>-x        </u>   <u> -x </u>

   -2y = -x + 18

    \frac{-2y}{-2} = \frac{-1}{-2}x + \frac{18}{-9}

       y = \frac{1}{2}x - 9

<em>plot at point the y-intercept "b = -9" (0,-9).  plot the next point using the slope "m = \frac{1}{2}" from point (0,-9), count up 1 and to the right 2 (2,-8).</em>

Using intercepts will make a large graph since you have to plot (18,0) so it is best to use the slope-intercept form.



6 0
3 years ago
Simplify the expression so there is only one positive power for each base. (5^-2 x 4^-4)^-2
faltersainse [42]
(a\cdot b)^n=a^n\cdot b^n\\(a^n)^m=a^{n\cdot m}\\\\(5^{-2}\cdot4^{-4})^{-2}=(5^{-2})^{-2}\cdot(4^{-4})^{-2}=5^{-2\cdot(-2)}\cdot4^{-4\cdot(-2)}\\\\=\boxed{5^4\cdot4^8}\to\fbox{A.}
6 0
3 years ago
Read 2 more answers
Nabuko buys 14 dog biscuits for $1.68 if nabuko pays $4.20 for dog biscuits how many did she buy
kozerog [31]

Answer:

35

Step-by-step explanation:

4 0
2 years ago
If f(x) =X +3, what is the value of f(3) and f(-2)?
ss7ja [257]
THIS ANSWER IS FOR f(3):
f(x)=x+3
f(3)=3+3
f(3)=6

THIS ANSWER IS FOR f(-2):
f(x)=x+3
f(-2)=-2+3
f(-2)=1
7 0
3 years ago
Marking brainliest!<br><br> Why should we love ourselves and accept our body?
Katarina [22]

Answer: reasons to love yourself, plus how self-love can change your life. ... We don't always have a warm body to hold us in a hard moment. ... counterintuitive—claiming that the best way to change yourself is to accept yourself.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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