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Yakvenalex [24]
3 years ago
13

X^2-7x-6=0 Use the quadratic formula to complete the equation show step by step

Mathematics
2 answers:
vladimir1956 [14]3 years ago
7 0

x=(-b +- √b^2-4ac)/2a

x=7+-√49--24/2a


asambeis [7]3 years ago
3 0

Answer:

x  = 7  ± √73   / 2



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2600 feet every 3 minutes.

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If Fran were to paint her living room alone, it would take 6 hours. Her sister Denise
GalinKa [24]

Answer:

It will take Fran and Denise 3\frac{3}{7} hours to paint the living room.

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Given that:

Time taken by Fran to paint living house = 6 hours

Time taken by Denise = 8 hours

Let,

x be the time taken by both of them.

\frac{1}{Fran's\ share}+\frac{1}{Denise's\ share}=\frac{1}{x}\\\\\frac{1}{6}+\frac{1}{8}=\frac{1}{x}\\\\\frac{4+3}{24}=\frac{1}{x}\\\\\frac{7}{24}=\frac{1}{x}\\\\x = \frac{24}{7}

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It will take Fran and Denise 3\frac{3}{7} hours to paint the living room.

4 0
3 years ago
What is the sum of the first five terms of a geometric series with a = 10 andr<br> = 1/5?
Zinaida [17]

Answer:

12.496

Step-by-step explanation:

Here, to calculate the sum of the first five terms of the series, we use the formula for the sum of terms in a geometric series.

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where Sn = ?

a = 10

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Substituting these values into the equation above, we have;

Sn = 10(1-(0.2)^5)/1-0.2

Sn = 10(0.99968)/0.8

Sn = 12.496

3 0
3 years ago
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