Write the following fraction proportions as ratio proportions.

$\frac{5}{7}=\frac{15}{21}$

Tazmin Horton
2021-09-19
Answered

Write the following fraction proportions as ratio proportions.

$\frac{5}{7}=\frac{15}{21}$

You can still ask an expert for help

Demi-Leigh Barrera

Answered 2021-09-20
Author has **97** answers

Consider the following proportion:

$\frac{5}{7}=\frac{15}{21}$

The objective is to write the given proportion in the form of a ratio.

If an equation showing the equality of two ratios, then the ratios are called as a proportion.

For example:$x\xf7y=m\xf7n$ or $\frac{x}{y}=\frac{m}{n}$

To write the proportion as a ratio, convert both the fractions in the form of a ratio,$A\xf7B$ , without
reducing the fractions to their lowest terms.

The conversion of$\frac{5}{7}=\frac{15}{21}$ into a ratio is,

$5\xf77=15\xf721$

Therefore, the proportion in the form of a ratio is$5\xf77=15\xf721$ .

The objective is to write the given proportion in the form of a ratio.

If an equation showing the equality of two ratios, then the ratios are called as a proportion.

For example:

To write the proportion as a ratio, convert both the fractions in the form of a ratio,

The conversion of

Therefore, the proportion in the form of a ratio is

asked 2021-05-14

Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type.

$\begin{array}{|ccccccc|}\hline 11.8& 7.7& 6.5& 6.8& 9.7& 6.8& 7.3\\ 7.9& 9.7& 8.7& 8.1& 8.5& 6.3& 7.0\\ 7.3& 7.4& 5.3& 9.0& 8.1& 11.3& 6.3\\ 7.2& 7.7& 7.8& 11.6& 10.7& 7.0\\ \hline\end{array}$

a) Calculate a point estimate of the mean value of strength for the conceptual population of all beams manufactured in this fashion.$[Hint.\text{}?{x}_{j}=219.5.]$ (Round your answer to three decimal places.)

MPa

State which estimator you used.

$x$

$p?$

$\frac{s}{x}$

$s$

$\stackrel{~}{\chi}$

b) Calculate a point estimate of the strength value that separates the weakest$50\mathrm{\%}$ of all such beams from the strongest $50\mathrm{\%}$ .

MPa

State which estimator you used.

$s$

$x$

$p?$

$\stackrel{~}{\chi}$

$\frac{s}{x}$

c) Calculate a point estimate of the population standard deviation ?.$[Hint:\text{}?{x}_{i}2=1859.53.]$ (Round your answer to three decimal places.)

MPa

Interpret this point estimate.

This estimate describes the linearity of the data.

This estimate describes the bias of the data.

This estimate describes the spread of the data.

This estimate describes the center of the data.

Which estimator did you use?

$\stackrel{~}{\chi}$

$x$

$s$

$\frac{s}{x}$

$p?$

d) Calculate a point estimate of the proportion of all such beams whose flexural strength exceeds 10 MPa. [Hint: Think of an observation as a "success" if it exceeds 10.] (Round your answer to three decimal places.)

e) Calculate a point estimate of the population coefficient of variation$\frac{?}{?}$ . (Round your answer to four decimal places.)

State which estimator you used.

$p?$

$\stackrel{~}{\chi}$

$s$

$\frac{s}{x}$

$x$

a) Calculate a point estimate of the mean value of strength for the conceptual population of all beams manufactured in this fashion.

MPa

State which estimator you used.

b) Calculate a point estimate of the strength value that separates the weakest

MPa

State which estimator you used.

c) Calculate a point estimate of the population standard deviation ?.

MPa

Interpret this point estimate.

This estimate describes the linearity of the data.

This estimate describes the bias of the data.

This estimate describes the spread of the data.

This estimate describes the center of the data.

Which estimator did you use?

d) Calculate a point estimate of the proportion of all such beams whose flexural strength exceeds 10 MPa. [Hint: Think of an observation as a "success" if it exceeds 10.] (Round your answer to three decimal places.)

e) Calculate a point estimate of the population coefficient of variation

State which estimator you used.

asked 2022-02-11

How do you simplify ratios?

Simplify$70:56$

Simplify

asked 2021-08-13

The solution of the given equation.

Given:$15=4a-5$

Given:

asked 2022-01-23

One cup of popcorn kernels make four cups of popped corn. There are six cups of kernels in a bag. How many cups of popped corn will one bag make?

asked 2021-08-10

To calculate: The number of grams of carbohydrate does a 5-oz serving contain if an 8-oz serving of pineapple contains 19.2-g of carbohydrate.

asked 2021-05-07

Suppose that A and B are independent events such that $P(A)=0.10$ and $P(\overline{B})=0.20$

Find$P(A\cap B)$ and $P(A\cup B)$

Find

asked 2022-01-23

Verifing $\int}_{0}^{\pi}x\mathrm{ln}\left(\mathrm{sin}x\right)dx=-\mathrm{ln}\left(2\right)\frac{{\pi}^{2}}{2$