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Mars2501 [29]
3 years ago
12

Which of the following are solutions to the equation below? Check all that apply. 9x^2-64=0

Mathematics
1 answer:
nikdorinn [45]3 years ago
4 0

Answer:

E. -8/3

F. 8/3

Step-by-step explanation:

9x^2-64=0

Add 64 to each side

9x^2-64+64 = 0+64

9x^2 =64

Divide each side by 9

9x^2/9 = 64/9

x^2 = 64/9

Take the square root of each side

sqrt(x^2) = ±sqrt(64/9)

We know that sqrt(a/b) = sqrt(a)/sqrt(b)

x = ±sqrt(64)/sqrt(9)

x = ± 8/3

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The coefficients corresponding to k = 0, 1, 2, ..., 6 in the expansion of (x + y)^6 are _____.
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Using the triangle of pascal we have that the expression equivalent to (x + y) ^ 6 is given by:
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 Therefore, the coefficients of the expansion are given by:
 1, 6, 15, 20, 15, 6, 1
 Answer:
 
The coefficients corresponding to k = 0, 1, 2, ..., 6 in the expansion of (x + y) ^ 6 are 1, 6, 15, 20, 15, 6, 1
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3 years ago
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Select the equations that are correct.mark all that apply.
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Answer:

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Step-by-step explanation:

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4 0
3 years ago
Divide 1.20m in the ratio 2:3:4 in a clear way
tatuchka [14]
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3 years ago
A company makes pens. They sell each pen for $99.
Sindrei [870]

Answer:

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at break even number of pens sold = 46

4 0
3 years ago
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