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Naily [24]
3 years ago
9

During the budget crisis in California, RCC was forced to cut 216 sections of classes for the Fall 2011 term. This was a 15% cut

. How many sections were offered before the 15% cut?
Mathematics
1 answer:
Mama L [17]3 years ago
3 0
Given
216 sections : 15%
want to know
X sections : 100%

Write the proportion equation
216/15 = X/100
Cross multiply
216*100=15*X
Solve for X
X=21600/15=1440
so there used to be 1440 sections.


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The correct answer is  CI = (71.415%, 78.915%)

The correct option is (A)

<h3 /><h3>What is Confidence level?</h3>

A confidence interval is the mean of your estimate plus and minus the variation in that estimate.

Given:

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Answer:

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c) |x - 5| = 2|x|

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d) defined conditions: 2 - x 》 0

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we have:

\sqrt{x + 4}  = 2 - x \\  <  =  > x + 4 = (2 - x) {}^{2}   \\  <  =  > x + 4 =  {x}^{2}  - 4x + 4 \\  <  =  >  {x}^{2}  - 5x = 0 \\  <  =  > x(x - 5) = 0 \\

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e)

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<=> x = -1/4

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