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2 years ago

Mean of 6 numbers is 41. Remove one number and the mean of the five numbers is 46. What is the unknown number

Mathematics

1 answer:

Alex17521 [72]2 years ago

6 0

Answer:

- 16

Step-by-step explanation:

This is very tricky. Be careful how you do it.

The total of the six numbers is 6*41 = 246

The total of five numbers = 5*46 = 230

What have you you removed to make the number average go up with a smaller sample? The answer is a negative.

230 - 246 = - 16

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Answer:

y = 3x –5

Step-by-step explanation:

for slope-intercept form, y = mx + b

find the slope, m

(-8 -4)/(-1-3) = m

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Substitute for m and use either coordinate for y and x to calculate b

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4 –9 = b

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Answer:

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Step-by-step explanation:

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Answer:

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2 years ago

For what values of $x$ is it true that $x^2 - 5x - 4 \le 10$? Express your answer in interval notation.

dybincka [34]

Answer:

x ∈ [-2, 7]

Step-by-step explanation:

The given equation ...

x^2 -5x -4 ≤ 10

can be rewritten as ...

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and factored as ...

(x +2)(x -7) ≤ 0

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2 years ago

2x+3y=15<br> x+y=6<br> work out the values of x and y

Anna [14]

Answer:

x=3

y=3

Step-by-step explanation:

x = 6-y

-plug in (6-y) into first equation

2(6-y)+3y = 15

12-2y+3y=15

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double check:

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