The closeness of the scores to the mean value is reflected through the values of the standard deviation. The smaller the value of standard deviation, the closer are the individual values to the mean. Therefore, since Mrs. Rijo's class has the smallest value for the standard deviation, her class has the closest individual score to the mean. The answer is the fourth choice.
Answer:
Proved
Step-by-step explanation:
m∠JPO = 90 = m∠OWK, and angle O is common between both triangles [reflexive property]. Therefore by Rule AA, ΔOKW~ΔOJP
Answer:
A border of 3 cm width is printed on 500 sheets of paper, each of length 40 cm and width 30 cm fit costs 50p to print 100 cm of border, find the total cost of printing the border.
Answer:
![\sqrt{120}](https://tex.z-dn.net/?f=%5Csqrt%7B120%7D)
Step-by-step explanation:
These are right triangles, remember<em> Pythagoras theorem?</em>
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"a" and "b" refer to the legs of the triangle, and "c" is the longest side, the one opposite to the right angle, the hypotenuse.
So, we need to find one leg, and we have a side and a hypotenuse.
Replace the values in the equation:
![9^{2} +b^{2} =10^{2}](https://tex.z-dn.net/?f=9%5E%7B2%7D%20%2Bb%5E%7B2%7D%20%3D10%5E%7B2%7D)
Simplify:
![36+b^{2} =100](https://tex.z-dn.net/?f=36%2Bb%5E%7B2%7D%20%3D100)
Take the 36 to the other side:
![b^{2} =36+100](https://tex.z-dn.net/?f=b%5E%7B2%7D%20%3D36%2B100)
Simplify:
![b^{2} = 136](https://tex.z-dn.net/?f=b%5E%7B2%7D%20%3D%20136)
To get rid of the square on the other side, put radicals on each side:
![\sqrt{b^{2} }=\sqrt{136}](https://tex.z-dn.net/?f=%5Csqrt%7Bb%5E%7B2%7D%20%7D%3D%5Csqrt%7B136%7D)
Simplify, the square and radical on the left cancel out:
![b=\sqrt{136}](https://tex.z-dn.net/?f=b%3D%5Csqrt%7B136%7D)
So that's the line in the center, not x, to find x, do the same.
x = ![\sqrt{120}](https://tex.z-dn.net/?f=%5Csqrt%7B120%7D)
:)
Answer:
d is the answer of the question