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vovikov84 [41]
3 years ago
15

Find all the zeros of the equation. -4x4 - 44x2 + 3600 = 0

Mathematics
2 answers:
Jet001 [13]3 years ago
7 0
-4X^4 - 44x^2 + 3600 = 0

divide through by -4:-

x^4 + 11x^2 - 900 = 0

900 = 36 * - 25    and 11 = 36-25  so the factors are

(x^2 + 36)(x^2 - 25)  = 0

x^2 = - 36  giving  x = 6i and -6i

x^2 = 25  giving x = 5 and x = -5

solution set is {-5, 5,  6i, -6i}
tino4ka555 [31]3 years ago
5 0

-5, 5,  6i, -6i

Is 100% correct!

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S=[E,F,G,H,J] identify the ways to select two members from s allowing the repetition
Fofino [41]

Answer: There are 25 ways to select two members.

Step-by-step explanation:

Since we have given that

S={E,F,G,H,J}

Number of elements = 5

We need to select two members from S allowing the repetition.

We will use "Fundamental theorem of counting":

There are 5 choices for the first member.

There are 5 choices for the second member.

So, Number of ways would be

5\times 5\\\\=25

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8 0
3 years ago
30 Points! please help!
SVEN [57.7K]

Answer:

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Step-by-step explanation:

18. When multiplying in scientific notation, just multiply the regular numbers together and add the exponents for the tens.

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However, the beginning number should have the decimal right after the 4, not any place after (for example, it's 3.056, not 30.56 or 3056.)

To fix this, move the decimal place forward one space from 40. to 4.0, and add 1 to the -11 power.

So the answer is now 4 * 10^-10

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Since in this case it's t, you can divide.

Dividing exponents is simple: just subtract them.

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3 years ago
Steve can text 20 emojis in 24 seconds.At that rate,how many emojis can he text in 2 minutes and 48 seconds
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Answer:140

Step-by-step explanation:

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Cross product

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Step-by-step explanation:

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