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damaskus [11]
2 years ago
15

Decrease £2123 by 8%

Mathematics
1 answer:
Gemiola [76]2 years ago
3 0
Should be £1953.16 :)
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Please narrate every step you make and make a 2 column proof!<br><br>thank you!!
quester [9]

Hang on ,it is already proven through given .

So The proof is of one line only

  • ray FEH bisects <DFG (Given)

Hence proved .

4 0
1 year ago
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How do you solve this????
riadik2000 [5.3K]
I got 14 for the answer
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3 years ago
What is the justification for each step in the solution of the equation?<br><br> 5x−42=2x−1
yanalaym [24]

Answer:

<h3>39.6</h3>

Step-by-step explanation:

collecting like terms we have:

5x-2x=-1+42

equating the terms..we have:

3x=41

divide both sides by the Co-efficient of x:

3x\3=42\3

x=39.6

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2 years ago
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Professor Halen teaches a College Mathematics class. The scores on the midterm exam are normally distributed with a mean of 72.3
lbvjy [14]

Answer:

14.63% probability that a student scores between 82 and 90

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 72.3, \sigma = 8.9

What is the probability that a student scores between 82 and 90?

This is the pvalue of Z when X = 90 subtracted by the pvalue of Z when X = 82. So

X = 90

Z = \frac{X - \mu}{\sigma}

Z = \frac{90 - 73.9}{8.9}

Z = 1.81

Z = 1.81 has a pvalue of 0.9649

X = 82

Z = \frac{X - \mu}{\sigma}

Z = \frac{82 - 73.9}{8.9}

Z = 0.91

Z = 0.91 has a pvalue of 0.8186

0.9649 - 0.8186 = 0.1463

14.63% probability that a student scores between 82 and 90

3 0
3 years ago
What is the equation of this line in standard form?
bazaltina [42]

Answer:

Step-by-step explanation: 11x-6y=13

7 0
2 years ago
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