-0.75-(-2/5) + 0.4 + (-3/4)
Simplify it :-)
-0.75 +
+ 0.4 -
Add the like terms / add your decimals with your decimals & your fractions with your fractions.
(-0.75 + 0.4) + (
-
)
Simplify :-)
0.35 + (
-
)
Simplify :-)
0.35 + (-
)
Now you turn your decimal into a fraction.
0.35 = 35/100 = 7/50
NEW PROBLEM :
+
= ??
Make both denominators 100.
×
= 14 / 100
7/20 × 5/5 = 35/100
NEW PROBLEM :
+
=
:-)
The answer would be: 4/5 + 3/5 = 7/5 ≈ 1.4
Refer to the picture below for detailed steps:
It is necessary to imagine the sum of the areas between each z-score and the average.
Given as the ratio of the area under the normal curve between two z-scores, both above average.
The Z score accurately measures the number of standard deviations above or below the mean of the data points.
The formula for calculating the z-score is
z = (data points – mean) / (standard deviation).
It is also expressed as z = (x-μ) / σ.
- A positive z-score indicates that the data points are above average.
- A negative z-score indicates that the data points are below average.
- A z-score close to 0 means that the data points are close to average.
- The normal curve is symmetric with respect to the mean and needs to be investigated.
Therefore, to find the percentage of the area under the normal curve between two z-scores, both above the mean, you need to look at the sum of the areas between the z-score and the mean.
Learn more about z-score from here brainly.com/question/16768891
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There are the same because 4/8 is rudeced to 1/2
