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Question 262209: Jeff and Diana are working on Math homework. Jeff can comlete 4 math problems in 11 minutes. Diana can complete 7 math problems in 25 minutes. Who is faster?
11/4=25/7
2.75=3.57
Jeff is faster.
Is this right
Click here to see answer by Theo(3464)

Question 262213: Amy is making a pitcher of juice for her party. She has two different recipes to choose from. Welch's Grape Juice = 3 cups grape concentrate, 5 cups cold water. The other is Brand X Grape Juice = 2 cups grape concentrate, 3 cups cold water.
What fraction of each recipe is concentrate? 3/8, & 2/5
What percent of each recipe is concentrate? 3/8=37.5=38 percent, & 2/5=40 percent
Which recipe should Amy choose if she wnts her juice to have the most grape flavor? the Brand X Grape Juice
Is this right?
Click here to see answer by Theo(3464)

Question 262212: Amy is making a pitcher of juice for her party. She has two different recipes to choose from. Welch's Grape Juice = 3 cups grape concentrate, 5 cups cold water. The other is Brand X Grape Juice = 2 cups grape concentrate, 3 cups cold water.
What fraction of each recipe is concentrate? 3/8, & 2/5
What percent of each recipe is concentrate? 3/8=37.5=38 percent, & 2/5=40 percent
Which recipe should Amy choose if she wnts her juice to have the most grape flavor? the Brand X Grape Juice
Is this right?
Click here to see answer by drk(1908)

Question 262461: A 6-ft observer casts a 4-ft shadow at the same time a chimney casts a 238-ft shadow. How tall id the chimney?
Click here to see answer by richwmiller(9143)

Question 263556: 8=X/3-8
I KNOW U ADD 8 FROM BOTH SIDES BUT THEN WHAT
Click here to see answer by checkley77(12569)

Question 263808: John and Ann are having a birthday party. John invited 14 people and will serve 3 cakes. Ann invited 28 people and is serving 7 cakes. At whose party will the guests get the most cake?
3 cakes to 14 people = 3/14 = .21 piece of cake p/person
7 cakes to 28 people = 7/28 = .25 piece of cake p/person
The most cake p/guest will be served at Ann's party.
This right?
Click here to see answer by checkley77(12569)

Question 264134: I have one question,
Miracle wants to sell a 40 fluid oz bottle at the same unit rate of the 12 fluid oz bottle (hint: The 12 fluid oz is $1.32 a bottle) how much will she charge for the 40 fluid oz?

Click here to see answer by checkley77(12569)

Question 261127: EXPRESS EACH RATE IN PER UNIT FORM solve and explain
question
if johnny drives at an average speed of 40 miles/hr, how long will it take for johnny to go 50 miles
Click here to see answer by Alan3354(30993)

Question 264339: it takes four men, 24 hours to build a fence. how many hours will it take six men to build a fence?
Click here to see answer by JBarnum(2044)

Question 264717: the wool sales for one week in New York amounted to 555,000lbs. the ratio of the domestic sales to the foreign sales was 14 to 23. What were the foreign sales?
Click here to see answer by josmiceli(9680)

Question 265166: find the value of m that makes the proportion m over 4 = m-6 over 12 a true statement.
Click here to see answer by stanbon(57352)

Question 265283: three tea bags are needed to make a gallon of iced tea. How many tea bags are needed to make four gallons

Click here to see answer by rfer(12660)

Question 265283: three tea bags are needed to make a gallon of iced tea. How many tea bags are needed to make four gallons

Click here to see answer by stanbon(57352)

Question 265345: The ratio of the measures of a pair of sides of a rectangle is 7:12. If the perimeter of the rectangle is 95, what is the length of each side?
Click here to see answer by mananth(12270)

Question 266292: 1:3/4 = 2/3:x what is x
Click here to see answer by stanbon(57352)

Question 266876: if the ratio of the length to the width of a rectangle is 4:3 and the perimeter is 84 centimeters, find its area.
Click here to see answer by dabanfield(803)

Question 267069: A person who is 6 feet tall walks away from a 50-foot silo toward the tip of the silo's shadow. At a distance of 32 feet feet from the silo, the person's shadow begins to emerge beyond the silo's shadow. How much farther must the person walk to be completely out of the silo's shadow?
Click here to see answer by scott8148(6628)

Question 267565: Jack starts at a 20320 summit and walks downhill at a rate of 4 feet per second. Jill starts at the bottom of the mountain and walks uphill at a rate of 1 foot per second. At what elevation will they meet?
Click here to see answer by drk(1908)

Question 268183: Out of 525 people surveyed, 210 answered yes. Estimate how many people would answer yes if 900 people were surveyed.
Click here to see answer by azhou4(12)

Question 268566: The sum of two numbers is 148.The larger number is 16 more than twice the smaller number.What are the numbers?
Click here to see answer by azhou4(12)

Question 268566: The sum of two numbers is 148.The larger number is 16 more than twice the smaller number.What are the numbers?
Click here to see answer by stanbon(57352)

Question 268600: A board 28 feet long is cut into two pieces and the length of the two pieces are in the ratio of 2 to 5. find the lengths of the two lengths.
Click here to see answer by drk(1908)

Question 268495: a-11 = 7
a+10 = 9
Click here to see answer by persian52(158)

Question 269186: 6x=solution is -8
Click here to see answer by persian52(158)

Question 269786: After driving 126 miles, a person found that the drive would have taken 1 hour less time by increasing the speed by 8mph. What was the actual speed?

Click here to see answer by ankor@dixie-net.com(15652)

Question 269992: Jennifer has 2 rectangular tablecloths that are similar. The dimensions of the larger tablecloth are 1.5 times as large as the dimensions of the smaller tablecloth. If the perimeter of the larger tablecloth is 24 feet, what is the perimeter of the smaller tablecloth?
Click here to see answer by edjones(7569)

Question 270375: How do you work this problem. It says to give all values of x. "The geometric mean of x+1 and 12x is 6x."
Click here to see answer by JBarnum(2044)

Question 270714: If a 140lb person burns 320 calories in 4 miles how many miles to burn 100 calories?
Click here to see answer by jessica,tylers(1)

Question 270972: 7.7meters/1.4meters=x/1meters
Click here to see answer by rfer(12660)

Question 270971: 1/2/8=10/x
Click here to see answer by JenniferTutors(83)

Question 271607: "Yolanda and Yoko ran in a 100-yd dash. When Yolanda crossed the finish line, Yoko was 10-yd behind her. The girls then repeated the race, with Yolanda starting 10-yd behind the starting line. If each girl ran at the same rate as before, who won the race? By how many yards?"
I am a parent who was trying to help her son with his homework. When working on this problem, I had Yolanda running at 100-yd per hour and Yoko at 90-yd per hour. (Just to make the problem easier to solve) My solution has the girls actually meeting up at the 90-yd line, but then Yolanda overtakes Yoko and still wins the race by 1/10 of a yard. However, my son's teacher told him that the girls ended the second race in a tie. Could someone please help me with this? Thank You!
Click here to see answer by mananth(12270)

Question 272034: Solve T=gr + gvt for g
Click here to see answer by ankor@dixie-net.com(15652)

Question 272412: if y varies directly as x and inversely as z, find y whe x=3 and z=2, if y=90 when x=30 and z=1.5
Click here to see answer by scott8148(6628)

Question 272699: An image of a building in a photograph is 6 centimeters wide and 11 centimeters tall. If the image is similar to the actual building and the actual building is 174 meters wide, how tall is the actual building, in meters?
Click here to see answer by stanbon(57352)

Question 272705: 24 is ____% of 40.
Click here to see answer by stanbon(57352)

Question 273133: 75 is what percent of 250? How do you find that answer?
Click here to see answer by edjones(7569)

Question 273127: How do you figure out 80% of 20?
Click here to see answer by edjones(7569)

Question 273766: If (x,4) is a solutionto the equation 5x-3y=13, what is the value of x?
Click here to see answer by solver91311(16885)

Question 273803: rotation of ferris wheel takes 15 min. what is the angle of rotation after 3 min. 5 min. 9 min. and 12 min. do i take 15 over 360 and 3 over a?
Click here to see answer by ankor@dixie-net.com(15652)

Question 274047: Quadratic Functions:
"The height of a ball thrown straight upward is measured by the function h(t)=-16t^2+40t, where h(t) is measured in feet and t is time in seconds."
A) Evaluate h(1) and explain what the dependent and independent variables represent.
B) What is the height of the ball after 2.5 seconds?
C) When is the ball at a height of 48 ft.?
D) When will the ball hit the ground?
* I have answered the first part of (A), getting a solution of 24. I am not sure what the dependent and independent variables are.
*I have solved (B) for an answer of 0.
*For part (C), I am not sure how to go about solving this backwards.
*For part (D), I can't even begin to know what to do. How should I go about solving for this, do I even have enough information?
Click here to see answer by ankor@dixie-net.com(15652)

Question 274337:
how do you show your work when trying to figure out how many yards are in 1,200 feet?
Click here to see answer by checkley77(12569)

Question 274392: 2/9b = b/18
Click here to see answer by stanbon(57352)

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