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Brilliant_brown [7]
3 years ago
10

Solve the inequality.2(4+2x)>5х+5 x<-2 x>-2х<3x>3​

Mathematics
1 answer:
olga_2 [115]3 years ago
4 0

Answer:

x<3

Step-by-step explanation:

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A: 28, 23,30, 25, 27
Serggg [28]

Answer:

8

Step-by-step explanation:

mean of A=28+23+30+25+27/5 = 26.6

average of B=22+19+15+17+20/5 = 18.6

now,

difference= 26.6-18.6

=8,,

6 0
3 years ago
How many centimeters in 60 inches?
ivann1987 [24]
152.4cm. 2.54cm = 1in. 60in x (2.54cm/1in) = 152.4cm.
7 0
3 years ago
What does y= -3x+3 equal
Andre45 [30]

Answer:

Solving for x, the answer is x = 1 - y/3

Hope this helps :D

7 0
3 years ago
Read 2 more answers
Researchers at a pharmaceutical company have found that the effective time duration of a safe dosage of pain relief drug is norm
FrozenT [24]

Answer:

a) P(1

b) P(X

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

2) Part a

Let X the random variable that represent the duration of a safe dosage of pain relief drug, and for this case we know the distribution for X is given by:

X \sim N(1.5,0.8)  

Where \mu=1.5 and \sigma=0.8

We are interested on this probability

P(1

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(1

And we can find this probability on this way:

P(-0.625

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.  

P(-0.625

3) Part b

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X

And we can find this probability on this way:

P(z

6 0
3 years ago
Click on the pic to see it. Need help with question 2
Pie
I hope you might have understood.

6 0
3 years ago
Read 2 more answers
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