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Elina [12.6K]
3 years ago
10

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]3 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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The answer is -4x + 1.

5 0
3 years ago
X and y are in direct proportion, when x is 8, y is 12. Which of the following is not a
Nat2105 [25]

Answer:

d.

Step-by-step explanation:

if x varies directly as y,

x = ky

8 = 12k

12k = 8

k = 8/ 12

k = 2/3,

x = 2/3 y

now substitute the value of any of the numbers of each pair, and check if it works:

for e.g, find x when y = 15

x = 2/3y

x = 2/3 × 15

x = 10

since you obtain x = 10 when y = 15, the pair is a possible corresponding value of x and y. now do the same for the rest .

ii) x = 2/3y

x = 2/3 × 3, when y = 3

x = 2

hence, this is also a possible pair of x and y values.

iii) x = 2/3y

x = 2/3 × 9 when y = 9

x = 6

again, a possible pair of x and y values.

iv) x = 2/3y

x = 2/3 × 20 when y = 20

x = 40/3

here, when y = 20, x is not 15. it is 40/3.

thus, it can be determined that this is not a possible pair of x and y values.

please try to understand and have a great day!

8 0
2 years ago
A line includes the points (4,1) and (8, 2). What is its equation in slope-intercept form?
kobusy [5.1K]

Answer:

y=1/4x

Step-by-step explanation:

y=mx+b slope is m rise over run 4 over 1 up so 1/4 then to find y intercept apply slope y int is 0

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3 years ago
Xét tính chẵn lẻ của hàm sô:<br> y=xmũ4+3x+5
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Answer:

i dont know what this language is

Step-by-step explanation:

please help me learn this language

7 0
2 years ago
5. Write two or three sentences that describe how a chart differs from a table. -please help meh T-T
igomit [66]

Answer:

Key difference: Tables represent facts and figures in a row and column format. Charts represent data in a more graphical manner which may include lines, bars and circles.

CHART-graphical display of information wherein the information is illustrated in symbols such as bars, lines, or slices.

TABLE- a means of displaying data or information in rows and columns.

5 0
3 years ago
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