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Elden [556K]
3 years ago
15

Solve for x in the equation x2-4x-9=29

Mathematics
2 answers:
daser333 [38]3 years ago
4 0
Hello there!


Check the picture for the answer.

Let me know if you have any questions.

Best of luck with your studies!

Thanks!

Citrus2011 [14]3 years ago
3 0
Hello! And thank you for your question!

First move all the terms to one side:

<span>x^<span><span>​2</span><span>​​</span></span></span>−4x−9−29=<span>0
</span>
Then simplify x^​2​​−4x−9−29:

<span><span><span>x<span><span>​^2</span><span>​​</span></span></span>−4x−38=0</span><span>
Then use the quadratic formula:

x = 4 + 2</span>√42 over 2 , 4 - 2√42 over 2

Finally simplify:

x = 2 + √42, 2 - √42

Final Answer:

x = 2 + √42, 2 - √42
</span>
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Make t the subject of the formula.<br><br> Please help.
Digiron [165]

Answer:

t = \frac{2-3q}{q+4}

Step-by-step explanation:

q = \frac{2-4t}{t+3}\\\\

Cross multiply,

q(t+3) = 2 - 4t        

Use distributive property: a*(b + c) =(a*b) + (a*c)

qt + 3q = 2- 4t

qt + 4t + 3q = 2

  qt + 4t     = 2 - 3q

    t(q + 4)  = 2 -3q

               t = \frac{2-3q}{q+4}

5 0
3 years ago
I need answer asap pls​
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6 0
3 years ago
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Solve 64^x = 16^x−1.
erica [24]
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4^3(x)=4^2(x-1)=> Solve for x by bringing down the exponent without the base.
3(x)=2(x-1)=====> Distribute
3x=2x-2======> Now solve for x
3x = 2x-2
-2x  -2x
x=-2
Therefore x is negative two
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3 years ago
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It takes an older pump twice as long to drain a certain pool as it does a newer pump. Working together, it takes the two pumps
mario62 [17]
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4 0
3 years ago
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At a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 12 m. T
cestrela7 [59]

Answer:

The answer would be 251.2 for the side walk if the radius for the whole circle is 12 and the small circle's radius would be 8. Only for the answer with the 8 m and 12 m radius NOT the 11m and 9 m

The equation would be:

144 x 3.14 - 64 x 3.14 = 251.2

Step-by-step explanation:

First, you need to find out what the whole circle is:

The whole circle is 452.16

Then, find the inner circle :

8 x 8 x 3.14  

200.96

Last, subtract the whole by the inner:

452.16 - 200.96 = 251.2

hope this helps!

5 0
3 years ago
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