Answer:
a) 15.579
b) 39.019
Step-by-step explanation:
a) For the top 2% the z-value from the z table
z = 2.054
thus,
z =
here
X = 132
Mean = 100
thus,
2.054 =
or
σ = 15.579
b) Using tables, we get for Z = 0.89 the value of 0.8133 and for Z= 0.90 the value of 0.8159
By interpolation, values for 0.815 and we get Z=0.897
thus,
z =
here
X = 220
Mean = 185
thus,
0.897 =
or
σ = 39.019
Answer:
Area of circle= 81π
Area of triangle= 371.8 yards
Step-by-step explanation:
<em>2) Area of circle = πr²</em>
<em>Area of circle = π*(18/2)²</em>
Area of circle = 81π
Therefore, the area of circle is 81π.
<em>4) Area of triangle = 1/2*base*height</em>
<em>Area of triangle = 1/2*22*33.8</em>
Area of triangle = 371.8 yards
Therefore, the area of the triangle is 371.8 yards.
!!
Answer:
A= -53/7
Step-by-step explanation:
1 x 10 -1 x 7 x A=7 x 9
10-7A =7 X 9
10-7A=63
-10 -10
-7A=53
A= -53/7
Answer:
9 to the power 10 or 9^10
Step-by-step explanation:
9^5×2
= 9^10
Answer:
<h3>31</h3>
Step-by-step explanation:
<h3>Let the other part be x.</h3>
<h3>Now,</h3><h3 /><h3>24:x=3:4</h3>
<h3>3x=96</h3><h3 /><h3>X = 96/3 = 32</h3>
<h3>1</h3>
<h3>Other part = 32</h3>
<h2>mark me brainlist!</h2>