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Wittaler [7]
3 years ago
13

2 - X<-7 (x > 9)solve and graph​

Mathematics
1 answer:
NARA [144]3 years ago
5 0
Use Photomath it graphs too
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Let A={15,25,35,45,55,65} and B= {25,45,65} what is A n B?
ss7ja [257]

Answer:

[25, 45,65]

Step-by-step explanation:

These are the common terms in A as well as B

6 0
3 years ago
1+1? Will give brainliest to first correct answer.
d1i1m1o1n [39]

Answer:

1+1= 2

have a nice day stay safe

3 0
3 years ago
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Find the sum. Write your answer in simplest form.
gulaghasi [49]

Answer:

the answer for your question is 9 31/42

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3 years ago
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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
Evaluate g(x) = 2x - 7 over the domain (2, 4, 6, 8) what is the range of g(x)
Elanso [62]

Answer:

-3, 1, 5, 9

Step-by-step explanation:

2(2) - 7 = -3

2(4) - 7 = 1

2(6) - 7 = 5

2(8) - 7 = 9

8 0
3 years ago
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