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GarryVolchara [31]

3 years ago

15

Plz help it’s due today

1 answer:

lina2011 [118]3 years ago

8 0

Answer:

From left to right:

1/8

5/8

1-3/16

1-7/8

2-1/2

3-1/8

4-3/8

5-3/8

5-7/8

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List all rational numbers<br><br>Let A={0,0.2222,√3,2,-2/3,-7,√7}

dezoksy [38]

<h2>[0,0.2222,2,-2/3,-7]</h2>

Step-by-step explanation:

A rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q.

$0$ can be written as $\frac{0}{1}$ ,so it is a rational number.

$0.2222$ can be written as $\frac{2222}{10000}$ ,so it is a rational number.

$\sqrt{3}$ cannot be written as a fraction,so it is not a rational number.

$2$ can be written as $\frac{2}{1}$ ,so it is a rational number.

$\frac{-2}{3}$ can be written as $\frac{-2}{3}$ ,so it is a rational number.

$-7$ can be written as $\frac{-7}{1}$ ,so it is a rational number.

$\sqrt{7}$ cannot be written as a fraction,so it is not a rational number.

7 0

4 years ago

A cubic function "y" has real coefficient, and its zeros are 0, 1, and -4. If x = 5 and y = 540 satisfies its equation, find the

sertanlavr [38]

Let's begin by listing out the information given to us:

A cubic function has the general form of:

$\begin{gathered} \displaystyle f(x)=ax^3+bx^2+cx+d \\ f(x)=y \\ y=ax^3+bx^2+cx+d \end{gathered}$

The function has real coefficients

Its zeros are 0, 1 & -4

$undefined$

4 0

1 year ago

Harry and Jack raised roses and petunias in their garden. If 15 percent of the flowers were roses and there were 120 roses, how

guapka [62]

Answer:

138 flowers

120+(120×(15%))= 138

4 0

3 years ago

Giles made baklava to serve at a party. He cut it into parallelogram-shaped pieces with the dimensions shown below Whoever gets

Nana76 [90]

Answer:

B

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

a sociologist develops a test to measure attitudes towards public transportation and 27 randomly selected subjects are given the

horsena [70]

Answer:

The 95% confidence interval for the mean score is:

$\mu$ ∈ $(67.73,\ \ 84.67)$

Step-by-step explanation:

We want to estimate the population mean, that is, the average score of all the subjects.

An estimator for the population mean μ is ${\overline {x}}$

Since the sample size is $27$ then we use the statistic $t_{\frac{\alpha}{2}}$ with $27-1 = 26$ degrees of freedom

The confidence interval for the mean is:

$({\displaystyle {\overline {x}}} + t_{\frac{\alpha}{2}}\frac{S}{\sqrt{n}},\ \ {\displaystyle {\overline {x}}} - t_{\frac{\alpha}{2}}\frac{S}{\sqrt{n}})$

Where

${\displaystyle {\overline {x}}}=76.2$ is the average score of the sample

$S=21.4$ is the standard deviation of the sample

$n= 27$ is the sample size

$t_{\frac{\alpha}{2}} = 2.056$ for a confidence level of 95% and 26 degrees of freedom

Then confidence interval is

$(76.2 + 2.056\frac{21.4}{\sqrt{27}},\ \ {76.2 - 2.056\frac{21.4}{\sqrt{27}})$

$(76.2 + 8.467,\ \ 76.2 - 8.467)$

$\mu$ ∈ $(67.73,\ \ 84.67)$

7 0

3 years ago