4 years ago

What is 2+1 please help me

Mathematics

2 answers:

ANTONII [103]4 years ago

7 0

Answer:

ummmm i think its 3 bb

Step-by-step explanation: if i think really hard i think 2 + 1 is 3

erica [24]4 years ago

4 0

2+1=3

I hope this helped! :)

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A Canadian longitudinal study1 examined whether giving antibiotics in infancy increases the likelihood that the child will be ov

dalvyx [7]

Answer:

1. $H_{0}$ : p = 0.70 , $H_{a}$ : p > 0.70

2. Test Statistic : 0.54 , P value : 0.2946

3. Fail to reject null Hypothesis

4. No.

Step-by-step explanation:

1. Null hypothesis is 70% of children receive antibiotics.

Alternative hypothesis is more than 70% of children receive antibiotics.

2. Test statistic is calculated as;

z = $\frac{p (1 - p)}{\sqrt{\frac{p (1-p}{n} )} }$

z = $\frac{0.01}{0.0185}$

z = 0.54

3. p value is calculated as;

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3 years ago

Which expression is the same as 1/5 of 7?

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1/5*7=7/5
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4 years ago

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Dmitrij [34]

The answer is tan40/45

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3 years ago

What is the greatest common factor of 81 and 135?

Vsevolod [243]

Its 27 all you do is
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4 years ago

This is a tough one. Thanks to everyone who helps

VladimirAG [237]

Step-by-step explanation:

Hello there!

A good first step is to fill the t=blanks with 2 and 4.

Then proceed as follows:

$3 |2x+4|=24\\3(2x+4)=24\\2x+4=\frac{24}{3} \\2x+4=8\\2x=8-4\\2x=4\\x=2$

And there you are! Feel free to comment with questions, and have a grwat day!

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4 years ago