2 years ago

Enter the range of values for x:

Mathematics

1 answer:

Tresset [83]2 years ago

5 0

Answer:

2 < x <7 I got the same question has you

Step-by-step explanation:

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Diego thinks that x = 3 is a solution to the equation x2 = 16. Do you agree? Explain or show your reasoning.

dlinn [17]

Answer:

Step-by-step explanation:

f(x) = x²

f(3) = 3²

= 3 × 3

= 9 Not 16

also

√16 = 4

8 0

2 years ago

The pressure of a scuba tank should be within 500 pounds per square inch (psi)of 2500 psi. Write the range of optimum pressures.

Aleonysh [2.5K]

The range would be between 2000 and 3000 PSI.

Explanation:

2500 PSI - 500 PSI = 2000 PSI

2500 PSI + 500 PSI = 3000 PSI

Hope this helps :)

3 0

3 years ago

suppose a sample of 1305 tenth graders is drawn. Of the students sampled, 1044 read above the eighth grade level. Using the data

Inessa05 [86]

Answer: $(0.771,\ 0.829)$

Step-by-step explanation:

Given : Significance level : $\alpha: 1-0.99=0.01$

Critical value : $z_{\alpha/2}=2.576$

Sample size : n=1305

The proportion of tenth graders read above the eighth grade level. = $p=\dfrac{1044}{1305}=0.8$

The confidence interval for population proportion is given by :-

$p\pm z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}\\\\=0.8\pm(2.576)\sqrt{\dfrac{0.8(1-0.8)}{1305}}\\\\\approx0.8\pm0.029\\\\=(0.771,\ 0.829)$

Hence, the 99% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level is (0.771,0.829) .

4 0

2 years ago

What is a system of equations that has a solution with (-2, 3)

Strike441 [17]

Answer:

x= -2 y= 3

Step-by-step explanation:

Those are cordinents for graphing. The vertex of the graph or a specific point in the graph.

4 0

3 years ago

Which of the following is the set of all real numbers X such that X +3 >x+5

Kamila [148]

Subtract 'x' from each side. Then 3 > 5 . No value for 'x' can make that statement true. The inequality has no solution.

3 0

3 years ago