# Posts by Maame

Total # Posts: 25

**statistics**

3. Fill in the blanks with the appropriate raw scores, z-scores, T-scores, and percentile ranks. Note: the Mean = 50, SD = 5. Raw z T %ile 35 1.2 35 16

*September 21, 2014*

**Data Mangement- Math**

Paula moves to an area with a different telephone exchange. Telephone numbers in the new exchange start with 753, and all combinations of the four remaining digits are equally likely. a) Calculate the probability that the last four digits in Paula’s new telephone number ...

*April 21, 2013*

**Data Mangement- Math**

Nancy lives in a subdivision where the streets are laid out in a grid pattern. Her school is six blocks south and four blocks east of her home. How many different direct routes could she take when she bicycles to school if she always stops by her friend’s home, which is ...

*February 20, 2013*

**math: reply asap**

Derek invests $250 per month for years at 4.8%/a compounded monthly. How much will his investment be worth at the end of the years?

*May 27, 2012*

**math: reply asap**

i don't know , but here is the question again. Betsy inherits $15 000 and would like to put some of it away for a down payment on a house in 8 years. If she would like to have $25 000 for the down payment, how much of her inheritance must she invest at 9.2%/a compounded ...

*May 27, 2012*

**math: reply asap**

Betsy inherits 1500 and would like to put some of it away for a down payment on a house in 8 years. if she would like to have 25000 for the down payment, how much of her inheritance must she invest at 9.2% a compounded quarterly

*May 27, 2012*

**math: reply asap**

Kenny wants to invest $250 every three months at 5.2%/a compounded quarterly. He would like to have at least $6500 at the end of his investment.How long will he need to make regular payments?

*May 27, 2012*

**matttth help please**

1. Mike wants to invest money every month for 40 years. He would like to have $1 000 000 at the end of the 40 years. For each investment option, how much does he need to invest each month? a) 10.2%/a compounded monthly b) 5.1%/a compounded monthly 2. Kenny wants to invest $250...

*May 26, 2012*

**MATH**

Each year, Eric invests $2500 at 8.2%/a compounded annually for 25 years. a) Calculate the value of each of the first four investments at the end of 25 years.

*May 26, 2012*

**MAAAATTTTHHHHHH**

Franco invests some money at 6.9%/a compounded annually and David invests some money at 6.9%/a compounded monthly. After 30 years, each investment is worth $25 000. Who made the greater original investment and by how much?

*May 26, 2012*

**MATH**

PV = A( 1+i)^n =15,000(1+0.025)^-40 =$5586.46

*May 26, 2012*

**MATH**

Rico can invest money at 10%/a compounded quarterly. He would like $15 000 in 10 years. How much does he need to invest now?

*May 26, 2012*

**math**

Chandra borrows some money at 7.2%/a compounded annually. After 5 years, she repays $12 033.52 for the principal and the interest. How much money did Chandra borrow?

*May 24, 2012*

**Math**

Serena wants to borrow $15 000 and pay it back in 10 years. Interest rates are high, so the bank makes her two offers: • Option 1: Borrow the money at 10%/a compounded quarterly for the full term. • Option 2: Borrow the money at 12%/a compounded quarterly for 5 years...

*May 20, 2012*

**Chemistry**

given what you know about periodicity , predict whether lithium sulphate is more or less soluble in water than sodium sulphate

*January 26, 2012*

**Chemistry**

0.75 L of hydrogen gas is collected over water at 25 oC and 101.6. What volumme will e dry hydrogen occupy 103.3 kPa and 25 oC? What is the balanced equation and what of numbers do i use ?

*January 19, 2012*

**Chemistry**

i would be great to show me the answer , but do it step by step so i understand better

*December 10, 2011*

**Chemistry**

i don't understand

*December 10, 2011*

**Chemistry**

Suppose you are going to add 450 mL of a 0.10 mol/L hydrochloric acid solution to 250 mL of a 0.2 mol/L sodium hydroxide solution. a)Which one is the limiting reactant? b)What is the theoretical yield of sodium chloride?

*December 10, 2011*

**Science : Chemistry**

i would be great to show me the answer , but do it step by step so i understand better

*December 10, 2011*

**Science : Chemistry**

The concentration of dissolved chlorine in tap water can be determined by adding excess potassium iodide and then using aqueous sodium thiosulphate to precipitate the resulting iodide ions. In Ontario, the aesthetic objective for chlorine in tap water is a maximum ...

*December 10, 2011*

**Chemistry**

sorry, i made a mistake

*November 21, 2011*

**Chemistry**

At 80oC, what mass of sodium chloride dissolves in 1.0L of water

*November 21, 2011*

**Chemistry**

okay, thank you, but i don't understand number two

*November 21, 2011*

**Chemistry**

1)20 mL of a saturated of potassium nitrae at 50oC. Approximately, what mass of solid will precipiatae from the solution? 2)At 80oC, what mass of sodium dissolves in 1.0L of water 3.What minimum temperature is required to dissolve 24 g of potassium nitrate in 40 g of water? is...

*November 21, 2011*

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