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BlackZzzverrR [31]
3 years ago
8

5x+4y=-12 3x - 4y=-20 What is the solution?

Mathematics
1 answer:
velikii [3]3 years ago
4 0
Is it too question??
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2/x2-9 - 3x/ x2-5x+6 please show work
Luda [366]

Answer: -3x^3 - 7x^2 - x + 39

Step-by-step explanation:

2/(x^2 -9) - 3x/(x^2-5x+6)

get those denominators factored out

2/(x-3)(x+3) - 3x/(x-3)(x-2)

Multiply both by both denominators

2(x-3)(x-2) - 3x(x-3)(x+3)

Multiply it out

(2x^2 - 10x + 12) - (3x^3 + 9x^2 -9x - 27)

Simplify and it becomes

-3x^3 -7x^2 -x + 39

5 0
3 years ago
Which expression is equal to 1/4
grandymaker [24]

Answer: An option is 3/12...

Step-by-step explanation:

You can just multiply the numerator and denominator my the same number to find an equivalent

6 0
3 years ago
A line passes through the two given points. Is it vertical, horizontal,or neither?<br>(8,3), (8,-4)​
Katena32 [7]

Answer:

horizontal.

Step-by-step explanation:

it goes straight up

5 0
3 years ago
In triangle abc, m of acb = 90, cd is perpendicular to ab , m of acd is 60. and bd is 5 cm. find ad
weeeeeb [17]

Let us draw a picture to make the things more clear.

Attached is the image.

We have been given that

\angle acd = 60 ^{\circ}

Therefore, we have

\angle dcb =90- 60= 30 ^{\circ}

Now, in triangle bcd, we have

\tan30 = \frac{5}{cd}\\&#10;\\&#10;\frac{1}{\sqrt 3}=\frac{5}{cd}\\&#10;\\&#10;cd=5\sqrt 3

Now, in triangle acb, we have

tan 60 = \frac{ad}{5\sqrt3} \\&#10;\\&#10;\sqrt 3=  \frac{ad}{5\sqrt3}\\&#10;\\&#10;ad= 5\sqrt3 \times \sqrt 3\\&#10;\\&#10;ad= 5\times 3\\&#10;\\&#10;ad=15

Thus, ad is 15 cm.


4 0
3 years ago
What is the correct answer?
emmainna [20.7K]

Answer:

68

Step-by-step explanation:

5 0
3 years ago
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