1 answer:
Answer:
63% of students
Step-by-step explanation:
Z = (X - μ) / σ
Z = 520 - 500 / 60
Z = 0.33
ON THE Z-TABLE
0.33 = 0.6293
<em>62.93% = 63% of students answer</em>
You might be interested in
Answer:
b
Step-by-step explanation:
1 mile is 6.6 times 800 feet.
Answer:
<h2>40</h2>
Step-by-step explanation:
90 degree angle
90 - 50 = 40
![\[x^3-3x^2-6x+8=x^3-x^2-2x^2+2x-8x+8=\]\[=x^2(x-1)-2x(x-1)-8(x-1)=(x-1)(x^2-2x-8)=\]\[=(x-1)(x^2+2x-4x-8)=(x-1)(x(x+2)-4(x+2))=\]\[=(x-1)(x+2)(x-4)\]](https://tex.z-dn.net/?f=%5C%5Bx%5E3-3x%5E2-6x%2B8%3Dx%5E3-x%5E2-2x%5E2%2B2x-8x%2B8%3D%5C%5D%5C%5B%3Dx%5E2%28x-1%29-2x%28x-1%29-8%28x-1%29%3D%28x-1%29%28x%5E2-2x-8%29%3D%5C%5D%5C%5B%3D%28x-1%29%28x%5E2%2B2x-4x-8%29%3D%28x-1%29%28x%28x%2B2%29-4%28x%2B2%29%29%3D%5C%5D%5C%5B%3D%28x-1%29%28x%2B2%29%28x-4%29%5C%5D)
Other zeros are 1 ana 4
