elementary & intermediate algebra help

Elementary transformations are of the following three types: Interchange of any two rows (or columns) The multiplication of the elements of a row (or column) by a non-zero number. The addition to the elements of any row (or column) the corresponding elements of any other row (or ..

Elementary Idea of Electron Microscope - In optical microscope, the ray of light can be bent by a lens system. By placing the object and the lens system in such a way, we control the direction of the ray to get a magnified image of the object. Since as 'electron' carriers charge it is pos..

In optical microscope, the ray of light can be bent by a lens system. By placing the object and the lens system in such a way, we control the direction of the ray to get a magnified image of the objec..

What is the difference between the number of children in Elementary and High schools in the year 2000? => about 9,000 or about 50 or about 1 or about 6,000..

The enrollments made in elementary schools and high schools from 1994 through 1998 is given in a double bar graph. Which year has the maximum difference between enrollments of high schools and elementary schools? => 1995 or 1994 or 1996 or 1997..

Use the data in the table to find the ratio of the expenditure for elementary and secondary school education to that of the expenditure for higher education in the year 2000. => 4 : 5 or 1 : 4 or 3 : 2 or 1 : 8..

289 elementary school students and 120 middle school students wrote letters for a time capsule. Estimate the total number of letters written. => 410 or 400 or 300 or 500..

The frequency table displays the different levels of education of 13 people in a family. How many more persons in the family had undergone Elementary or Secondary education than those who had undergone University education? => 2 or 5 or 4 or 3..

In 1995, the U.S. government spent $315 billion on the Elementary and Secondary school education. This is 45% of the total expenditure on education. Find the total expenditure on education. => $820 billion or $700 billion or $720 billion or None of the above..

The frequency table shows the school enrolment (in thousands) in the year 2000. Let E represents elementary school. Pre Primary Elementary or high school College or graduate school California 1101 6472 2557 New Jersey 303 1444 470 Use the table to find P(E). => 25.57% or 11.01% ..