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meriva
4 years ago
7

Mathematics Help Please!!

Mathematics
2 answers:
Fantom [35]4 years ago
8 0
Https://us-static.z-dn.net/files/da0/898a932883d3d078dd059fa2a97c67a7.jpeg

Nikitich [7]4 years ago
8 0
To solve this fraction we have to reduce to the same denominator, but prior to reducing, note that one of the denominators x²-4 could be expanded to:
(x-2)(x+2)   [remember a² - b² =n(a-b)(a+c)]

Let the denominator be (x-2)(x+2),

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

2 -(x-2) = 3x+6 ==>2-x+2 = 3x+6 ==> x=-4/6 ==> x= - (1/2)
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A number is 6 less than its square?
Simora [160]
3 is 6 less than its square.

3^2 = 9

9-3 = 6

I hope this helps!
7 0
4 years ago
Read 2 more answers
Find the equation of a plane that is perpendicular to the vector −4i⃗ −4j⃗ −k⃗ and passing through the point (−2,−5,5)
vredina [299]

hello ....

the equation of a plane that is ;  ax+by+cz +d =0

the vector perpendicular to this plane is : V(a,b,c)

in this exercice ; a = -4  b= -4  c = -1

then: the equation of a plane that is ;  -4x-4y-z +d =0

but the plane  passing through the point (−2,−5,5) :

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5 0
4 years ago
Please help me out :)
arlik [135]

Answer:

\frac{\sqrt{17} }{7}

Step-by-step explanation:

Using the Pythagorean identity

sin²x + cos²x = 1, then

sinx = \sqrt{1-cos^2x}

Note that (\frac{4\sqrt{2} }{7})² = \frac{32}{49}

sinΘ = \sqrt{1-(32/49)}

        = \sqrt{\frac{17}{49} } = \frac{\sqrt{17} }{7}

5 0
3 years ago
How do you do the math for this?
makvit [3.9K]
For the answer to the question above asking, how much gas will you have to buy i<span>f you drive 50 miles each week and your car gets 25 miles to the gallon with gas costing $4.00 per gallon?
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i hope my answer helped you.
8 0
3 years ago
when a decimal is written in word form, what indicates that the equivalent form is a mixed number and not a fraccion? Explain.
AleksandrR [38]
The mixed number is a fraction so the question is not able to be solved.
Hope this helps.
7 0
3 years ago
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