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Zigmanuir [339]
2 years ago
11

Please help me with this if u get it right u get BRAINLISTED HELP PLS​

Mathematics
1 answer:
Sergeeva-Olga [200]2 years ago
8 0

Answer:

D

Step-by-step explanation:

simplify:

3x+9>x+33

2x>24

x>12

now see the graphs, and B and D both are marked with 12

but D has no filled circle, so that is the right answer

I hope this helped, and if my answer was right, please mark this as brainliest! Thank you!

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The healthcare provider prescribes an IV solution of ampicillin 1 gram in 50 mL of DşW at 25 drops/minute. The nurse uses an inf
Morgarella [4.7K]

The infusion will be completed at 19:31

The medicine that the nurse is giving the patient is 1 gram of ampicillin diluted in 50 mL of dextrose water.

This means 50 mL + 1 mL = 51 mL. 1 gram of ampicillin = 1 mL considering all water-based substances have a density of 1gm/mL.

Now, the set delivers 15 ggt or drops per mililiter. Let's calculate the total drops in the 51 mL.

51mL x 15ggt =765 drops

Finally, we know the medicine is given at a rate of 25 drops per minute. Let's calculate the time:

  • 765 drops / 25 drops per minute = 30.6 minutes

This means the medicine it will take 30.6 minutes for the infusion to be completed and therefore the infusion will be completed at 19:31 (19:00 + 30.6 minutes = 19:30.6 or 19:31).

Learn more in: brainly.com/question/25281327

5 0
2 years ago
The manufacturer of an airport baggage scanning machine claims it can handle an average of530 bags per hour.(a-1) At α = .05 in
-Dominant- [34]

Answer:

b. H0: μ < 530. Reject H0 if tcalc > -1.753

Step-by-step explanation:

1) Data given and notation  

\bar X=507 represent the sample mean

s=47 represent the sample standard deviation  

n=16 sample size  

\mu_o =530 represent the value that we want to test  

\alpha represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is less than 530 (left tailed tes), the system of hypothesis would be:  

Null hypothesis:\mu \geq 530  

Alternative hypothesis:\mu < 530  

If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic  

We can replace in formula (1) the info given like this:  

t=\frac{507-530}{\frac{47}{\sqrt{16}}}=-1.957

Critical value

Since we are conducting a left tailed test we need to first find the degrees of freedom for the statistic given by:

df=n-1=16-1=15

Now we need to look on the t distribution with 15 degrees of freedom that accumulates 0.05 of the area on the left area. And on this case the critical value would be t_{\alpha}=-1/753.

And we can use the following excel code to find it: "=T.INV(0.05,15)"  

So then the correct rejection zone for H0 would be: Reject H0 if t_{calc}

P-value  

Since is a one side left tailed test the p value would be:  

p_v =P(t_{(15)}  

Conclusion  

If we compare the p value and the significance level for example \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can conclude that the mean is significantly lower than 530 at 5% of significance.  

6 0
3 years ago
1933-36<br> 1937-40<br> 1931-33<br> 1931-34
sdas [7]
I don't really know
7 0
3 years ago
What is 238 rouned to the nearst houndred​
Alexeev081 [22]
200 because:
250 or higher is 300
249 or lower is 200
4 0
2 years ago
Read 2 more answers
Jason plans to pay the water bill with two equal payments
djyliett [7]
Since the water bill costs $35, to split it into 2 equal payments, you would simply just half $35 which is $17.50.
7 0
3 years ago
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