Questions on Algebra: Trigonometry answered by real tutors!

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Question 108080: The interest rate on an auto loan in May was 12 3/8%. By
September the rate was up to 14 1/4 %. How many percentage points did the interest rate increase over the period?
Please can someone help me with this percentage and fraction problem??

Click here to see answer by checkley71(8403) About Me 

Question 108087: 17 11/12 diveded by 6 1/10 =
HELP PLEASE

Click here to see answer by checkley71(8403) About Me 
Question 108087: 17 11/12 diveded by 6 1/10 =
HELP PLEASE

Click here to see answer by brandombe(4) About Me 

Question 108069: 13/15 - 11/20 =
Help again please, just need to no how to do these again. My mind is not of any help need proffesionals...

Click here to see answer by solver91311(16877) About Me 

Question 108084: Lunch meat sells for about $3 per pound. You use about a 1/2 pound per day for sandwiches. How much should you budget for lunch meat over the next month (about 20 workdays)?
Click here to see answer by edjones(7569) About Me 

Question 108076: 1 1/15 + 3 3/10 - 2 4/5 = ??
Can someone help me with this please, I really have no idea where to start.
Thank you.

Click here to see answer by edjones(7569) About Me 

Question 108067: 1/3 + 5/12 + 4/5 =
help me please still do not no how to add/subtract fractions...Do all the bottom numbers have to be the same number? Then all the top numbers have to be mutliplied by the same as the bottom number???

Click here to see answer by edjones(7569) About Me 

Question 108065: Find the least common multiple (LCM) for each of the following groups of numbers. Use whichever method you wish.
12, 20 and 35

Click here to see answer by Fombitz(13828) About Me 

Question 108447: Write the following as a common fraction or mixed number.
4.0171
Can someone please help me with this?

Click here to see answer by checkley71(8403) About Me 

Question 108449: Arrange in order from smallest to largest.
2.05, 25/10, 2.0513, 2.059, 251/100, 2.0515, 2.052, 2.051
Can someone please help me. Once again I do not even no where to start. (the 25/20 and 251/100 are fractions.)

Click here to see answer by checkley71(8403) About Me 

Question 108452: Lula wants to round 76.24491 to the nearest hundredth. She first rounds 76.24491 to 76.245 and then rounds 76.245 to 76.25 and claims that this is the final answer. What is wrong with this approach?
a) When rounding you only need to look at the number to the right of the place you are rounding to .. so in this case she should have simply looked at 76.24 .. The number just to the right of the hundredth place is less than 5 so you just discard that and all other digits after it. The Correct answer in this case would be 76.44.
b) When rounding you only need to look at the number to the right of the place you are rounding to .. so in this case she should have simply looked at 76.91 .. The number just to the right of the hundredth place is less than 5 so you just discard that and all other digits after it. The Correct answer in this case would be 78.24.
c) When rounding you only need to look at the number to the right of the place you are rounding to .. so in this case she should have simply looked at 76.24491 .. The number just to the right of the hundredth place is less than 5 so you just discard that and all other digits after it. The Correct answer in this case would be 76.24.
d) none of the above.
Can someone please help me with this one problem? I actually think this is the only question that I cannot grasp.

Click here to see answer by stanbon(57307) About Me 
Question 108452: Lula wants to round 76.24491 to the nearest hundredth. She first rounds 76.24491 to 76.245 and then rounds 76.245 to 76.25 and claims that this is the final answer. What is wrong with this approach?
a) When rounding you only need to look at the number to the right of the place you are rounding to .. so in this case she should have simply looked at 76.24 .. The number just to the right of the hundredth place is less than 5 so you just discard that and all other digits after it. The Correct answer in this case would be 76.44.
b) When rounding you only need to look at the number to the right of the place you are rounding to .. so in this case she should have simply looked at 76.91 .. The number just to the right of the hundredth place is less than 5 so you just discard that and all other digits after it. The Correct answer in this case would be 78.24.
c) When rounding you only need to look at the number to the right of the place you are rounding to .. so in this case she should have simply looked at 76.24491 .. The number just to the right of the hundredth place is less than 5 so you just discard that and all other digits after it. The Correct answer in this case would be 76.24.
d) none of the above.
Can someone please help me with this one problem? I actually think this is the only question that I cannot grasp.

Click here to see answer by checkley71(8403) About Me 

Question 108458: Add thirty-eight and nine tenths, five and fifty-eight hundredths, seven, and fifteen and eight tenths.
OK I was wrong I have one more problem that I cannot grasp. Help please.

Click here to see answer by waiwai933(6) About Me 
Question 108458: Add thirty-eight and nine tenths, five and fifty-eight hundredths, seven, and fifteen and eight tenths.
OK I was wrong I have one more problem that I cannot grasp. Help please.

Click here to see answer by checkley71(8403) About Me 

Question 108464: Business and finance. In a bottling company, a machine can fill a 2-liter (L) bottle in 0.5 second (s) and move the next bottle into place in 0.1 s. How many 2-L bottles can be filled by the machine in 2 h?
This is the last question that I really do not quite understand, please help.

Click here to see answer by stanbon(57307) About Me 

Question 108496: the width of a rectangle is 2 units less than its length. if the diagonal of the rectangle is 10 units long, find the dimensions of the rectangle.
Click here to see answer by HyperBrain(694) About Me 

Question 108499: a rectangle has a length twice its width. A square with the same area has a side 2 units longer than the width of the rectangle. Find the dimensions of the rectangle.
Click here to see answer by stanbon(57307) About Me 

Question 108914: A circular coffee table has a diameter of 5 ft. What will it cost to have the top refinished if the company charges $3 per square foot for the refinishing?
Can someone please help me with this?

Click here to see answer by josmiceli(9671) About Me 

Question 108924: The distance from Philadelphia to Sea Isle City is 100 mi. A car was driven this distance using tires with a radius of 14 in. How many revolutions of each tire occurred on the trip?
This is my last question of the day. I hate word problems AND i dont understand what/how to do the radius thing either if someone could explain how that would be so great!! Thanx

Click here to see answer by josmiceli(9671) About Me 

Question 108931: Complete each of the following statements, using the symbol < or >.
HELP
5/16 ? 0.313

Click here to see answer by stanbon(57307) About Me 

Question 108936: Please help me with this word problem + I do nnot no where to start on this again.
The following table gives the free throws attempted (FTA) and the free
throws made (FTM) for the top five players in the NBA for a recent season. Calculate the free throw percentage for each player by writing the FTM over the FTA and converting this fraction to a decimal.
Player FTM FTA
Allan Houston 363 395
Ray Allen 316 345
Steve Nash 308 339
Troy Hudson 208 231
Reggie Miller 207 230

Click here to see answer by edjones(7569) About Me 
Question 108936: Please help me with this word problem + I do nnot no where to start on this again.
The following table gives the free throws attempted (FTA) and the free
throws made (FTM) for the top five players in the NBA for a recent season. Calculate the free throw percentage for each player by writing the FTM over the FTA and converting this fraction to a decimal.
Player FTM FTA
Allan Houston 363 395
Ray Allen 316 345
Steve Nash 308 339
Troy Hudson 208 231
Reggie Miller 207 230

Click here to see answer by kaddiedkny(1) About Me 

Question 108930: Write each of the following as a common fraction or mixed number. Write your answer in lowest terms.
15.35
Please help me with this problem.

Click here to see answer by edjones(7569) About Me 

Question 108919: An A-frame cabin has a triangular front with a base of 30 ft and a height of 20 ft. If the front is to be glass that costs $3 per square foot, what will the glass cost?
HELP ME PLEASE!!! I hate word problems.

Click here to see answer by ankor@dixie-net.com(15649) About Me 

Question 109184: Eduardo owned 6/7 of a family business. He sold 1/5 of the business to his son. What portion of the business does he still own?
Help again with these fractions please.

Click here to see answer by stanbon(57307) About Me 

Question 109188: Jon spent 1/3 of his study time doing math homework and 2/7 preparing for a history exam. What fraction of his study time remains?
help me please. Would i multiply these to get 2/21? or no?

Click here to see answer by stanbon(57307) About Me 

Question 109190: Find the least common multiple of 3, 6, and 9.
A) 27 B) 9 C) 36 D) 18
Can somene please help me with this? Would this be D) 18?

Click here to see answer by Demi5000000(8) About Me 

Question 109212: Complete the following statement, using the symbol <, =, or >.
3.671 _____ 3.67

help me with this please would it be > sign?

Click here to see answer by jim_thompson5910(28593) About Me 

Question 109213: Write the following as a common fraction or mixed number.
0.00508
Would the answer be 508/10,000?

Click here to see answer by jim_thompson5910(28593) About Me 
Question 109213: Write the following as a common fraction or mixed number.
0.00508
Would the answer be 508/10,000?

Click here to see answer by MathLover1(6627) About Me 

Question 109211: Greg spent 1/4 hour (h) responding to emails and 5/8 h returning phone calls. How much time did he spend on the two activities?
I keep cpming up with 5/8, but that is not an answer option what am I doing wrong?? :(

Click here to see answer by stanbon(57307) About Me 

Question 109216: Round to the indicated decimal place.
7.76338 four decimal places
A) 7.763 B) 7.764 C) 77.6340 D) 7.7634
Help me with this one please? Would the answer be D??

Click here to see answer by stanbon(57307) About Me 

Question 109301: Prove that Sin(theta)times Cos(theta) divided by Cos^2(theta)-Sin^2(theta)=Tan(theta) divided by 1-Tan(theta)
Show step by step how to change the left to equal the right side of equasion

Click here to see answer by jim_thompson5910(28593) About Me 

Question 109302: Pove that
1+sin(theta)divided by 1-Sin(theta)- 1-Sin(theta) Divided by 1+Sin(theta)=
4Tan(theta)times Sec(theta)
Show step by step how to change the left side of the equation to equal the right side of the equation.

Click here to see answer by bucky(2189) About Me 

Question 109611: A tennis ball is served from a height of 7 feet to just clear a net 3 feet high. If it served from a line 39 feet behind the net and travels in a straight path, how far from the net does the ball first hil the ground?
The answer is 29.25 in the answer key, I just need to know how to do it!
PLEASE HELP- NEED SOON!

Click here to see answer by stanbon(57307) About Me 

Question 109630: Multiply. Write the answer in scientific notation.
(2.4 x 10(–5)) x (4 x 10(–4))

Click here to see answer by checkley71(8403) About Me 

Question 109628: Write using positive exponents, and simplify if possible.
(–3x)(-2 power)

Click here to see answer by checkley71(8403) About Me 

Question 109660: If a ladder, leaning against the side of a house, has a height of 14 meters, and the ladder is 2.5 meters away from the wall. What is the angle formed by the ground and the ladder?


answer is 80 degrees. need to know how

Click here to see answer by checkley71(8403) About Me 

Question 109662: If a tree has a height of 50 meters, and projects a shadow of 17 meters along the ground, what is the angle of the sun above the tree?

answer is 71 degrees. Need to know steps

Click here to see answer by stanbon(57307) About Me 

Question 109788: Write the following as a common fraction or mixed number.
5.679
Could someone please help. Is my answer correct?
5 and 679/100

Click here to see answer by bucky(2189) About Me 

Question 109968: Each side of a regular hexagon has length 10. Find the area of the hexagon.
(Hint: Divide the Hexagon into triangles)
How many triangles do I divide the hexagon into and what do I do from there?
Or just write out the equation to solve it.
The answer in the answer key is 150 square roots of 3.

Click here to see answer by josmiceli(9671) About Me 

Question 109958: Find the length of the indicated side of triangle PQR.
1. The measure of Q= 90, measure of P=53 QR= 197, PR=? (find what PR equals)
I just need an equation to solve this using trig.

Click here to see answer by scott8148(6628) About Me 

Question 109991: How would you determine if the problem below is true?
Cos(B)Cot(B) = CSC(B)- Sin(B)
*Work*
Cos(B) X(times) (Cos(B)/sin(B))= CSC(B)- (1/CSC(B)
Cos^2(B)/Sin(B)) = (CSC^2(B)-1/CSC(B))
(1-Sin^2(B)/Sin(B) = ?


Click here to see answer by edjones(7569) About Me 

Question 110099: Using the law of Cosine or Sine, solve:
a=60 b=x c=20 Angles A=x B=x C=34.0 degrees SSA
I tried A=sin-1(60sin34.0/20) but it said error. Pleas help

Click here to see answer by scott8148(6628) About Me 

Question 110579: A store has T-shirts on sale at 2 for $5.50. At this rate, what
do five T-shirts cost?
Would this be $6.25?

Click here to see answer by Kalmetam(43) About Me 

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