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Marta_Voda [28]
3 years ago
15

A set of exam marks has mean 70 and median 65 marks. It is decided to subtract 10 from all the marks. For the new set of marks,

what is the median?
Mathematics
1 answer:
Aleks04 [339]3 years ago
6 0

Answer:

For the new set of marks, the median is of 55

Step-by-step explanation:

The median is the halfway point of a dataset, that is, the value that separates the lower 50% of the data set from the upper 50%.

In a data set, if we subtract or add all marks by x, the median will be subtracted or added by x.

In this question, we have that:

Median 65

From all marks, 10 is subtracted.

So, for the new set of marks, the median is of 65 - 10 = 55

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Muhammad owns 8 fewer swim suits than Charlie. Let k represent the number of Charlie's swim suits. Identify the expression that
andre [41]

Answer:

Number of Muhammad's swim suits = k - 8

Step-by-step explanation:

Given:

Number of Charlie's swim suits = K

Number of Muhammad's swim suits = 8 less than Charlie

Find:

Expression [Number of Muhammad's swim suits]

Computation:

Number of Muhammad's swim suits = 8 less than Charlie

Number of Muhammad's swim suits = k - 8

6 0
2 years ago
Quadrilateral WXYZ is a Parallelogram. Find the value of each variable.
Arisa [49]

Answer: a=3, b=1

A parallelogram have its opposite sides equal and parallel.

Step-by-step explanation:

SO, the quadrilateral WXYZ have its opposite sides equal as its a parallelogram.

From the given figure the side XY= WZ and XW= YZ, which gives two equations i.e

   Equation 1 is    3a-4=a+2       and     Equation 2 is     b+1=2b

Solving Equation 1                                     Solving equation 2

                    3a-a = 2+4                                    2b-b = 1                          

                    2a   =  6                                              b=1

                       a   =  3                    

So, by solving the two equations a=3 and b=1.

3 0
3 years ago
Simplify the expression:<br><br>(6 + 8) + x = 14​
Alex787 [66]

Answer:

x=0 is your answer

Step-by-step explanation:

(6 + 8) + x = 14

14+x=14

x=14-14

x=0

5 0
3 years ago
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the hypotenuse of a 45-45-90 triangle has a length of 10 units. what is the length of one of its legs?
SIZIF [17.4K]
When a triangle is a 45-45-90 triangle, the following rules apply:

-the 2 legs are equal lengths
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if the hypotenuse is 10, then 10 divided by the square root of 2 is how you find the leg.
the square root of 2 is <span>1.41421356237. 
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