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Feliz [49]
3 years ago
14

Solving inequalities. 1. 2x + 3 < 9 2. 4x - 5 > 43

Mathematics
1 answer:
Rudiy273 years ago
4 0

Answer:

1.   x< 3

2.   x>12

have a great day :)

Step-by-step explanation:

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Write and solve an inequality.
TEA [102]

Answer:

ok

Step-by-step explanation:

4 0
2 years ago
Use the t-distribution and the sample results to complete the test of the hypotheses. Use a significance level. Assume the resul
Ksenya-84 [330]

Answer:

Test statistic = 1.3471

P-value = 0.1993

Accept the null hypothesis.

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 4

Sample mean, \bar{x} = 4.8

Sample size, n = 15

Alpha, α = 0.05

Sample standard deviation, s = 2.3

First, we design the null and the alternate hypothesis

H_{0}: \mu = 4\\H_A: \mu \neq 4

We use two-tailed t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{4.8 - 4}{\frac{2.3}{\sqrt{15}} } = 1.3471

Now, we calculate the p-value.

P-value = 0.1993

Since the p-value is greater than the significance level, we fail to reject the null hypothesis and accept it.

3 0
3 years ago
what will come in the following series 20 25 23 28 26 31 29 34 _? answer is 31. please explain how?? urgent pls​
Assoli18 [71]

The series of numbers is adding 5 and then subtracting 2

20+5=25

25-2=23

23+5=28

28-2=26

and so on. Do you understand?

7 0
3 years ago
Find the selling price. Where necessary, round to the nearest cent. Regular price:$14.99. Percent of discount:15%
RSB [31]

Answer:

the price is approximately $12.75

Step-by-step explanation:

4 0
3 years ago
Solve for Z 3-4(Z+1)=3Z-(2+Z) Enter you answer as a simple fraction
skelet666 [1.2K]
3 - 4z - 4 = 3z - 2 - z

-4z - 1 = 2z - 2

2z + 4z = -1 + 2

6z = 1

z = 1/6

Hope this helps!
5 0
3 years ago
Read 2 more answers
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