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elixir [45]
3 years ago
13

3. If x2 + 4 = 29, then x2 - 4 = ? A. 5 B. 121 C. 21 D. 25 E. 33

Mathematics
2 answers:
EastWind [94]3 years ago
7 0
Answer is c as x is 25/2
zvonat [6]3 years ago
6 0

Answer:

c

Step-by-step explanation:

<h3>because x²+4=29 you can solve the equation for x²</h3><h3>x²+4=29</h3><h3>x²=25</h3><h3>substitute the value of x² into the expression x²-4 to calculate the value the expression is equal to </h3><h3>x²-4=25-4=21</h3><h3>c.21 is your answer </h3><h3>hope this works</h3>
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Nat2105 [25]

Answer:

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Step-by-step explanation:

192x * 4 is 768x

Now you have 768x=-5

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In decimal form that is -0.006510416

If you round the decimal to the nearest tenth you get 0

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6 0
2 years ago
In simplest radical form, what are the solutions to the quadratic equation 0 = –3x2 – 4x + 5?
JulsSmile [24]
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3 years ago
Please help me! I'm having trouble solving this! In the △PQR, PQ = 39 in, PR = 17 in, and the height PN = 15 in. Find QR. Consid
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Step-by-step explanation:

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4 0
3 years ago
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Answer:

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