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Vinvika [58]
3 years ago
13

the number of minutes spent studing are 60 70 45 60 80 35 45 find the measure of center that best represents the data justify yo

ur selection and then find the measure of center
Mathematics
2 answers:
dezoksy [38]3 years ago
4 0
There are three measures of center: mean, median, and mode.

The median would be the number in the middle when the numbers are ordered.
35 45 45 60 60 70 80

The mode would be the number that occurss most frequently.
Since 45 and 60 both appear twice, you take the mean of the two, which is 52.5

The mean would be the sum of all the numbers divided by the amount of numbers.
60+70+45+60+80+35+45 = 395/7 ≈ 56.43

You could really justify any of these, but typically you would use the mean in this case because there are no outliers.
Artist 52 [7]3 years ago
3 0
The measure of center is mean. You would be finding the average number of minutes spent studying.
To find the mean of the data you would add all of the numbers up and divide by the total amount of numbers you added.
60+70+45+60+80+35+45
=395
395/7
=<span>56.4285714286</span>
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nexus9112 [7]

Answer: u already have the answer so thank u for the answer and the 21. Points

Step-by-step explanation:

3 0
3 years ago
Which point is not in the solution set of 3x+2y&lt;12? A (1,4) B (2,3) C (3,1) D(4,-1)
arlik [135]
Test each one out! Coordinates are written in (x, y) so just substitute each one

A) 3(1)+2(4) = 11
B) 3(2)+2(3) = 12
C) 3(3)+2(1) = 11
D) 3(4)+2(-1) = 10

Out of all these answers B has a value less than 12 so the answer is:

B (2,3)

6 0
3 years ago
Read 2 more answers
Can you guys please help me my math teacher wants us to get this right and I don’t get it please help me on all of it
Ostrovityanka [42]

#5 is

Let's solve your equation step-by-step.

2

5

x−1=9

Step 1: Add 1 to both sides.

2

5

x−1+1=9+1

2

5

x=10

Step 2: Multiply both sides by 5/2.

(

5

2

)*(

2

5

x)=(

5

2

)*(10)

x=25

Answer:

x=25

7 0
3 years ago
What is the measure of angle 1?
frutty [35]
Sum of all the interior angles = (5-2)x180 = 540°
540 - 100 - 120 - 100 - 90 = 130°
So the last unknown angle in the polygon is 130°

Sum of all the adjacent  angles on a straight line is 180°
Angle 1 = 180 - 130 = 50°
3 0
3 years ago
A potential energy function is given by U = A x3 + B x2 − C x + D . For positive parameters A, B, C, D this potential has two eq
Ivenika [448]

Answer:

7.8655

Step-by-step explanation:

Given the functionl

U=Ax^3+Bx^2-cx+D

Where,

A=1.45J/m^3\\B=2.85J/m^2\\c= 1.7J/m\\D=0.6J

We have, replacing,

U=1.45x^3+2.85x^2-1.7x+0.6

We need to derivate and verify for stable equilibrum that,

\frac{d^2 U}{dx^2}>0

Then,

U'(x) = 4.32x^2+5.7x-1.7

Roots in,

x_1=-1.57008\\x_2=0.250636

We obtain U"(x), then we have

\frac{d^2U}{dx}=8.64x+5.7

For x=-1.57, U"(x)=-7.86549 Unestable

For x=0.250636 U"(x)=7.8655>0 Stable

7 0
3 years ago
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