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SSSSS [86.1K]
3 years ago
13

Solve the equation for all values of x by completing the square. Irrational x^2+15=-10x

Mathematics
1 answer:
attashe74 [19]3 years ago
7 0

Answer:

x=-1.8, x=-8.2

Step-by-step explanation:

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Which expression represents the approximate length
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The expression that represents the approximate length of BC is; A: (3) sin(66)/sin (38)

<h3>Trigonometric Ratios</h3>

From the given triangle ABC, we see that;

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Thus using sine rule, we have;

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3/sin 38 = BC/sin 66

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3 years ago
I need help with question 9
makvit [3.9K]

Answer:

f(x)=0.17x+3.00

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1 hour will cost $13.20

Step-by-step explanation:

I found the difference in minutes between the given values and the difference in cost between the given values. Between 8 minutes and 25 minutes is 17, and between 25 and 40 is 15 minutes. The difference of $7.25 and $4.36 is $2.89, and the difference between $7.25 and $9.80 is $2.55. I then divided2.89 by 17 and 2.55 by 15 and both resulted in $0.17/minute. I them multiplied 8 minutes by $0.17 toget $1.36. I subtracted that from the cost given for 8 minutes to get $3.00. The $3.00 is the initial charge, or b in slope-intercept form with m=0.17. Plug in 60 for x to find the cost of an hour.

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4 years ago
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