# Posts by bart

Total # Posts: 130

**math Did I do it right?**

Use front-end estimation to find the value of the expression. I do not understand (without adjustment) 687 - 239 (without adjustment) is this right? 600 + 200= 800 + 126=926

**Check answer**

Does (-2)^7 = -2^7

**Bob, I am lost at what you mean.**

I think I made a mistake in how I wrote the first one. I should have said (-2)^7 So would I be correct in saying -2^7

**Please check answers**

(-2)7=-2^7 -2^5 = -2*-2 = 4 * -2= -8 * -2 = 16 * -2 = -32

**math Did I do it right?**

That was rude and uncalled for! It asks for expanded notation.

**math Did I do it right?**

Calculate using expanded notation, showing steps. 72 + 806 Did I do it right? 72 + 806 (7*10) + (2*1) + (8*100) + (6*1) =(8 * 100) + (7*10) + (6*1)

**math-lost**

List all the subsets of S. You may use "C" for chocolate, "V" for vanilla, and "M" for mint. S = {Chocolate, Vanilla, Mint} I do not understand how to do this.

**math**

I am not sure I understand what you are saying; however, would my answer be 25?

**math**

I just do not understand how to figure this out. Find the number of subsets of the given set. {math, English, history, science, art} Would I do something like this: 1. {} 2. Math 3. English 4. history 5. science 6. art 7. Math and English 8. math and history 9. math and ...

**math**

Write the negation of the following: Every rectangle with four equal sides is a square. A) No rectangle with four equal sides is not a square. B) Every square with four equal sides is not a rectangle. C) Every rectangle with four equal sides is not a square. D) No square with ...

**math**

2 2/3

**math**

Not sure if I did this right. A worker has readings that take minutes each to read and record. How many readings can be completed in 192 minutes? 8/3 = 192/x = 8x = 576/8 = x = 72 Answer = 72

**Math**

Write the numbers in order of increasing size. 0.81, 0.811, 0.888, 8/10, 0.8181 I think it may be 0.888, 8/10, 0.81, 0.8181, 0.81

**math**

I can't believe I messed that up. Thx.

**math**

I have no idea how to do this: Express the ratio in simplest form. 5 yards to 24 feet convert yards to feet: 12 x 5 = 60 ft. Would the answer be 60:24 ? is this the simplest form if the answer is correct?

**math**

is the answer 11.025?

**math**

The 18th hole at the Riverwoods Golf Course is 441 yards long. How long would it be on a model with a scale of 2.5 inches to 100 yards? I do not understand how to figure this out.

**Math**

I do not understand how to decide which method would you use to determine whether this proportion is true or false? 19/6=4/27

**Math**

For the first time ever I understand. Thank you very much. Your correction helped me out immensely.

**Math**

I do not understand the 46 hundredeths. isn't the 2 in the hundredths?

**Math**

A 6-pack of 4oz containers of yogaurt costs 2.99. what is the unit price in cents per ounce? Round to the nearest hundredths of a cent. First I would take 6 x 4 = 24 oz. Then I would divide 2.99/24 and get an answer of .1245833. Would my answer be 12 cents/oz or 13 cents/oz

**Math**

thank you. I actually was thinking I needed to multiply and then divide but I should divide first, which would inclue inverting the 1/6 into 6/1. Duh.

**Math**

I was thinking that I have to multiply but that doesn't make sense. However, I am terrible at story problems. A child's dose of medicine is 1/6 of a pre-measured dose cup. If the bottle of a medicine is the size of 9 doses, how many children's doses are there in ...

**math**

In a game of Incan basketball, A points are given for a free throw and B points are given for a field goal, where A and B are positive integers. If A=2 and B=5, then it is not possible for a team to score exactly 1 point. Nor is it possible to score exactly 3 points. Are there...

**math**

In a game of Incan basketball, A points are given for a free throw and B points are given for a field goal, where A and B are positive integers. If A=2 and B=5, then it is not possible for a team to score exactly 1 point. Nor is it possible to score exactly 3 points. Are there...

**Grammar**

What's wrong with the following sentence? He was in trouble for acting like a tomfoolery.

**Probability**

Sharon was palying darts. She threw six darts and all of them hit the target. Which of the following could be her score? The target goes from 9 in the center, then 7, 5 , 3, and 1 on the outside ring. Possible Scores: 4 17 56 28 29 31 50 8 Please give a quick explanation.

**Math**

Sharon was playing darts. She threw six darts and all of them hit the target. Which of the following could be her score? The target goes from 9 in the center, then 7, 5 , 3, and 1 on the outside ring. Possible Scores: 4 17 56 28 29 31 50 8 Please give a quick explanation.

**chemistry**

how would you state Ag2CrO4 acting as a cathode?

**math**

ive been working on my sat's and i cant seem to figure out how to answer the following question. a right angle is given. the length of ba is 20. what is the approx length of bc? sin= .643 cos= .766 tan= .839 the answer is 12.9 but i don't know how that is. I assume bc ...