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Over [174]
3 years ago
12

3-|-4|-|2| what's the awnswer to this

Mathematics
1 answer:
bija089 [108]3 years ago
4 0
Evaluate absolute value first.
|-4|=4
|2|= 2

Rewrite equation
3-4-2
-1-2
-3

Final answer: -3
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Hey I am super confused about the equation below. plzz help!!!
marshall27 [118]

Answer:

50.

Step-by-step explanation:

12 x 45 = 540. 45 + 5 = 50.

5 0
2 years ago
The national average sat score (for verbal and math) is 1028. if we assume a normal distribution with standard deviation 92, wha
elena55 [62]

Let X be the national sat score. X follows normal distribution with mean μ =1028, standard deviation σ = 92

The 90th percentile score is nothing but the x value for which area below x is 90%.

To find 90th percentile we will find find z score such that probability below z is 0.9

P(Z <z) = 0.9

Using excel function to find z score corresponding to probability 0.9 is

z = NORM.S.INV(0.9) = 1.28

z =1.28

Now convert z score into x value using the formula

x = z *σ + μ

x = 1.28 * 92 + 1028

x = 1145.76

The 90th percentile score value is 1145.76

The probability that randomly selected score exceeds 1200 is

P(X > 1200)

Z score corresponding to x=1200 is

z = \frac{x - mean}{standard deviation}

z = \frac{1200-1028}{92}

z = 1.8695 ~ 1.87

P(Z > 1.87 ) = 1 - P(Z < 1.87)

Using z-score table to find probability z < 1.87

P(Z < 1.87) = 0.9693

P(Z > 1.87) = 1 - 0.9693

P(Z > 1.87) = 0.0307

The probability that a randomly selected score exceeds 1200 is 0.0307

5 0
3 years ago
Which of the following is an irrational number?
Serhud [2]
A. 1.9 is an irrational number
6 0
3 years ago
1234567791234556677889
Lapatulllka [165]
372819388338822814738288919147477483822 okay i guess
3 0
3 years ago
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25 and then add the decimals they have to be aaddd by the two decimals
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3 years ago
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