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Daniel [21]
3 years ago
6

Jack and Jill are two students in Mrs.Juliano's math class.On the last five quizzes,Jack scored an 80,90,95,85, and 70. Jill sco

red a 70,75,90,100, and 95.
Find the median and interquartile range for each student.

Which student's quiz grades are more consistent?

Mathematics
1 answer:
larisa [96]3 years ago
6 0
Median = it is the middle value, which split the higher half from the lower half of the data

To find it order the data:

Jack: 70, 80, 85, 90, 95 => median = 85

Jill: 70, 75, 90, 95, 100 => median = 90

Interquartile range, IQR = Percentil 75th - Percentil 25th

Jack:

Percentil 75% = Q3

5 data * 75% = 3.75 => the next value (over the 3rd) is the 4th => Q3 = 90

Percentil 25% = Q1

5 data * 25% = 1.25 => the next value (over the first) is the 2nd => Q1 = 80

Interquartile range = Q3 - Q1 = 90 - 80 = 10

Jill:

Q3 = fourth value = 95
Q1 = second value = 75

IQR = Q3 - Q1 = 95 - 75 = 20

 


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The rise is 2 and the run is 3
8 0
2 years ago
Someone help and please answer it fully
IRINA_888 [86]

Answer:

No, Matt did not solve the equation correctly

Correct Answer: x = 8

Step-by-step explanation:

4(x + 2) = 30

Step 1: Distribute

4x + 2 = 30      =>     This is his mistake, he should completely distribute 4    

                                  to x and 2

Step 2: Subtract 2 from both sides/Isolate x

4x = 28           =>      This part is done correctly, but wrong because of Step 1

Step 3: Divide both sides by 4

x = 7                =>      This is correct, but again, he messed up on Step 1

<h3>Let's find the correct answer to this equation:</h3><h3>4(x +2) = 30</h3>

Step 1: Distribute

Remember to distribute 4 to all terms in the parenthesis.

4(x + 2) = 4(x) + 4(2)

            = 4x + 8

4x + 8 = 30

Step 2: Subtract 8 from both sides/Isolate x

Move all the terms that do not belong to x to the other side. We can do this by subtracting 8 from both sides  => (opposite operation of adding 8)

4x + 8 = 30

4x = 30 - 8

4x = 32

Step 3: Divide both sides by 4/Isolate x

Now we want x by itself. Since x is being multiplied by 4, we have to use the opposite operation, dividing by 4, to have x on one side by itself

4x = 32

4(x) = 32

x = 32 ÷ 4

x = 8

-Chetan K

7 0
2 years ago
The radius of the cone is 1.75 inches, and its height is 3.5 inches. If the diameter of the bubble gum ball is 0.5 inches, what
julia-pushkina [17]

Answer:

=11.155 in³

Step-by-step explanation:

Given data:

Radius= 1.75 inches

Height = 3.5 inches

Diameter= 0.5 inches

To find the volume of a cone we will apply the formula:

Volume of a cone = 1/3 πr²h

Substitute the values:

V= 1/3* 3.14 *(1.75)² * 3.5

V=1/3 *3.14*(3.0625)* 3.5

V= 33.66/3

V=11.22 in³

Now find the volume of the bubble gum:

Volume of bubble gum = 4/3 π*r³

Substitute the values:

V= 4/3*3.14*(0.5/2)³

V=4/3*3.14(0.25)³

V=4/3*3.14(0.015625)

V=0.19625/3

V=0.0654 in³

Now subtract the volume of bubble gum ball from the volume of a cone

=11.22 - 0.0654

=11.155 in³

Thus the closest approximation of the volume of the cone that can be filled with flavored ice is 11.155 in³....

6 0
3 years ago
A doctor ran 55 hours the mom ran 52 hours what was the total
Elan Coil [88]
This is I suppose basic addition. Addition is a mathematical process of combining or joining something to something else. The word "total" indicates that the addition will be used. If the doctor ran for 55 hours and the mom for 52 hours, by using the addition it will be:
    55
+  52
______

  107 hours in total.

107 hours converted in days will be 4 days and 4 hours. SInce 1 day contains 24 hours you now divide 107 hours by 24 hours to get its equivalent to days.
5 0
3 years ago
Read 2 more answers
What’s the answer ????
anzhelika [568]
The first one is the answe<span>r.</span>
5 0
3 years ago
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