Answer:
96.4% of people have an IQ score between 69 and 132
Step-by-step explanation:
When the distribution is normal, we use the z-score formula.
In a set with mean and standard deviation , the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this question:
What percentage of people have an IQ score between 69 and 132, to the nearest tenth?
The proportion is the pvalue of Z when X = 142 subtracted by the pvalue of Z when X = 69. The percentage is the proportion multiplied by 100. So
X = 132
has a pvalue of 0.983
X = 69
has a pvalue of 0.019
0.983 - 0.019 = 0.964
0.964*100 = 96.4%
96.4% of people have an IQ score between 69 and 132
A rectangular right prism area=legnth times width times height or base area times height
base=3 b y12, area=3 times 12=36
height=5
36 times 5=180
an oblique rectangular prism volume is the same as the right rectangular prism formula so
4 times 9 times 5=180
180=180
the volumes are the same
Before we can determine the rectangular coordinate of the point, let's determine first its polar coordinates. For this, we need two things: radius and angle.
For the radius, we see that point R is 4 units away from the center.
For the angle, we see that it is 30° clockwise or 330° counterclockwise. See the illustration below:
Now that we know the radius is 4 units and the angle is 330° counterclockwise, let's now convert this to rectangular coordinates.
Use the formula below:
For x-coordinate, we have:
For the y-coordinate, we have:
Therefore, the rectangular coordinate of the given polar point is (2√3, -2). Option B.
Answer:
124 teaspoons.
Step-by-step explanation:
Let spoons used this month be denoted by t
According to given condition:
155 - 20% of 155 = t
By simplifying
155 - 0.2(155) = t
155 - 31 = t
124 = t
so the oil used is 124 teaspoons.
i hope it will help you!
11x+x=936
12x=936
x=78
Nico picked 78.
78*11= 858
Kai picked 858.