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loris [4]
3 years ago
8

please help me with this problem, i'd appreciate it sm and thank u for taking the time out of your day to help me and others. :

)

Mathematics
1 answer:
melamori03 [73]3 years ago
3 0

Answer:

7. Each sweatshirt is $60

8. Table is    3,60 and   5, 100  and   8,160  and   9,180  and     12,240

9. You would graph table by plotting the x,y coordinates of each point on a graph and connecting the dots to show linear relationship

Step-by-step explanation:

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8/x-5 - 9/x-4 = 5/x^2-9x+20
adelina 88 [10]
If you're using the app, try seeing this answer through your browser:  brainly.com/question/2752942

_______________


Solve the equation:

\mathsf{\dfrac{8}{x-5}-\dfrac{9}{x-4}=\dfrac{5}{x^2-9x+20}\qquad\qquad(x\ne 5~and~x\ne 4)}


Reduce the fractions at the left side so that they have the same denominator:

\mathsf{\dfrac{8(x-4)}{(x-5)(x-4)}-\dfrac{9(x-5)}{(x-4)(x-5)}=\dfrac{5}{x^2-9x+20}}\\\\\\
\mathsf{\dfrac{8x-32}{x^2-4x-5x+20}-\dfrac{9x-45}{x^2-4x-5x+20}=\dfrac{5}{x^2-9x+20}}\\\\\\
\mathsf{\dfrac{8x-32}{x^2-9x+20}-\dfrac{9x-45}{x^2-9x+20}=\dfrac{5}{x^2-9x+20}}\\\\\\
\mathsf{\dfrac{8x-32-(9x-45)}{x^2-9x+20}=\dfrac{5}{x^2-9x+20}}


Numerators must be equal:

\mathsf{8x-32-(9x-45)=5}\\\\
\mathsf{8x-32-9x+45=5}\\\\
\mathsf{8x-9x=5+32-45}\\\\
\mathsf{-x=-8}\\\\
\mathsf{x=8}\quad\longleftarrow\quad\textsf{this is the solution.}


I hope this helps. =)


Tags:  <em>rational equation fraction solution algebra</em>

7 0
3 years ago
Given the triangle below, what is mC, rounded to the nearest tenth?
svetlana [45]

Answer:

41.4

Step-by-step explanation: Since this isn't a right triangle and you're given side side side (SSS), you need the Law of Cosines.

cos(c) = (a^2 + b^2 - c^2)/2ab

(100+144-64)/2*12*10

cos(c) = 180/240

multiply both sides of the equation by cos^-1 to get ride of cos:

cos^-1(cos(c)) = cos^-1(180/240)

c = 41.4

3 0
3 years ago
What is the length of side BC of the triangle?<br> Enter your answer in the box.
Murljashka [212]

Answer:

28

Step-by-step explanation:

2x + 7 = 4x - 7

14 = 2x

x = 7

BC = 4x = 4(7) = 28

8 0
2 years ago
What is a atom? Help me out guys!
Deffense [45]
A basic unit of a chemical element
8 0
3 years ago
Distance between<br> -9 1/2 and 1 1/2
sladkih [1.3K]

Answer:

10

Hope This Helps!

4 0
3 years ago
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