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oee [108]
3 years ago
14

What is the answer to the equation (x-5)^2=40

Mathematics
1 answer:
Citrus2011 [14]3 years ago
3 0

Answer:

x^2 -10x - 15 = 0

(don't know how far you want me to go)

Step-by-step explanation:

(x - 5)^2 = 40

(expand the brackets)

(x - 5)(x - 5) = 40

x^2 -5x -5x + 25 = 40

x^2 -10x + 25 = 40

x^2 -10x - 15 = 0

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6, 3, 4, 7, 3, 7, 8, 5, 7 i. Find the median ii. Find the mean iii. Find the modal mark
4vir4ik [10]

Answer:

i. 6

ii. 5\frac{5}{9}

iii. 7

Step-by-step explanation:

First organize the data from least to greatest.  3,3,4,5,6,7,7,7,8

To find the median, remove the extremes from the data over and over.

3,4,5,6,7,7,7

4,5,6,7,7

5,6,7

6

To find the mean, add all of the numbers and divide by 9

3+3+4+5+6+7+7+7+8=50

50/9=5\frac{5}{9}

To find the modal mark, simply find the number present most in the data set: 7(occurs 3 times)

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3 0
3 years ago
Which expression has a value that is equivalent to 5n+13 when n= -15
Rasek [7]
Which expression has a value that is equivalent to 5n+13 when n=-15? n^2+13x 








6 0
3 years ago
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A factory received an order for 1,758 laptops. For the first 6 days, it produced 125 laptops per day. If it was asked to finish
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Answer:

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Step-by-step explanation:

Target number is 1758

<u>Produced in 6  days:</u>

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<u>Remaining to produce:</u>

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Days left- 4

<u>Should produce per day:</u>

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