SAMARA

Most popular questions and responses by SAMARA
1. Chem

Calculate the pH of a solution obtained by mixing 50 mL of 0.75 M CH3COOH with 15 mL of 1.6 M NaOH. (Ka of CH3COOH is 1.8 x 10-5)

2. Grammar

Which of the following is correct in regard to the use of formal English? A. In formal English, we use words to say precisely what we mean. B. Contractions are considered acceptable in any document. C. Formal English is used more frequently in speaking

3. Mathematics

write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

4. stationary point

find the stationary point of the function z=4x^2+10xy+4y^2-x^2y^2 and also determine their nature plz show me step i don't know it

5. 7th grade math- fast help

A triangle has measures of 90°, 40° and x degrees. What is the measure of x?

6. Mathematics

how do you calculate the time when average speed is given

7. Mathematics

write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.

1. Science

help me unscramble acnsrl spgei

posted on October 6, 2016
2. 3 grade math ms sue

10 cubes

posted on April 7, 2016
3. Grammar

B?

posted on May 9, 2013
4. Mathematics

the distance is 50 and the speed is 60 which equals 0.8333.... not sure is that answer makes sense

posted on July 25, 2012
5. Mathematics

this is the 5th time am posting this in the last 3 weeks and no one has helped me! i really don't know how to answer this question

posted on July 20, 2012