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Scrat [10]
3 years ago
6

Plot √2 and √3 on the number line.

Mathematics
2 answers:
frutty [35]3 years ago
8 0

Answer:

The statements (1), (2), (4) and (6) are true.

Step-by-step explanation:

Consider the diagram below for the number line.

  • The first statement is: \sqrt{2}

From the number line it is clear that the above statement is true.

  • The second statement is: \sqrt{2}

From the number line it is clear that the above statement is true.

  • The third statement is: \sqrt{2}>1.5

The value of √2 is 1.414. This value is less than 1.5.

So, the above statement is false.

  • The fourth statement is: \sqrt{3}

From the number line it is clear that the above statement is true.

  • The fifth statement is: \sqrt{2}=\sqrt{3}-0.5

The value of √3 is 1.732. The difference between √2 and √3 is, 0.318.

Thus, the above statement is false.

  • The sixth statement is: \sqrt{3}=\sqrt{2}+0.3

The value of √3 is 1.732. The difference between √2 and √3 is, 0.318.

Implying, √3 = √2 + 0.318.

⇒√3 = √2 + 0.3

Thus, the above statement is true.

VMariaS [17]3 years ago
8 0

1,2,4,6 are the correct options.

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konstantin123 [22]

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3 years ago
-4/5 divided by 1/3<br> Please asap
Snezhnost [94]

the straight up answer is -12/5

3 0
2 years ago
Solve log 3/2+log8/10-log3o​
Ronch [10]

Answer:

\boxed{−0.074031268}

Step-by-step explanation:

if \: this \: is \: your \: question \to \\  \:  \frac{3}{2} +log \: ( \frac{8}{10}) -log \: 30 \\ then  \: to \: simplify \: we \: \to \\  \frac{3}{2}  +  log(  \frac{ \frac{8}{10} }{30} )  =  \\  \\  \frac{3}{2}  +  log( \frac{8}{300} )  \\  .......................................................\\ now \: lets \: solve \: for \to \: log( \frac{8}{300} )  \\ ....................................................... \\ log( \frac{8}{300} )  \to \\ −1.574031268 \\ so \\  1.5−1.574031268\\   \boxed{ans = −0.074031268}\\

8 0
3 years ago
Nationwide, the average waiting time until a electric utility customer service representative answers a call is 200 seconds per
Pavel [41]

Answer:

z=\frac{120-200}{\frac{25}{\sqrt{30}}}=-17.527  

p_v =P(Z  

If we compare the p value and the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis.  

We can say that at 5% of significance the mean average waiting time is significantly less than 200 seconds per call.

Step-by-step explanation:

Data given and notation  

\bar X=120 represent the sample mean  

\sigma=25 represent the population standard deviation  

n=30 sample size  

\mu_o =200 represent the value that we want to test  

\alpha=0.05 represent the significance level for the hypothesis test.  

z 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 population mean is less than 200, the system of hypothesis are :  

Null hypothesis:\mu \geq 200  

Alternative hypothesis:\mu < 200  

Since we know the population deviation, is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-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:  

z=\frac{120-200}{\frac{25}{\sqrt{30}}}=-17.527  

P-value  

Since is a one-side left tailed test the p value would given by:  

p_v =P(Z  

Conclusion  

If we compare the p value and the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis.  

We can say that at 5% of significance the mean average waiting time is significantly less than 200 seconds per call.

3 0
3 years ago
(3x^2-4+5)-(2x^2+2) find it
poizon [28]

Answer:

x^2-1

Step-by-step explanation:

7 0
3 years ago
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