Questions on Algebra: Proportions answered by real tutors!

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Question 119515: Hi I have a question that I do not understand how to do. Would anybody please help me?

Use a proportion to estimate each population:

total deer counted: 64
tagged deer counted: 24
total deer tagged: 64

Can anybody explain how to answer this question please?Thanks
Click here to see answer by stanbon(75887)

Question 119559: the hieght of a triangle is half the length its base. the area of the triangle is 12.25 cm.what is the hieght.i was absent the day my teacher was teaching it and now she is absent.please show me what i need to do
Click here to see answer by checkley71(8403)

Question 120054:

1. divide(3a+4b)(5c-10d)by5(a+b)(c-2d)

Click here to see answer by checkley71(8403)

Question 120053: 1. how many tils 10 cm square do you need to cover a room 2m by 3m?
2. if there are 6 tutors and 42 students, what is the ratio of staff to students?

Click here to see answer by checkley71(8403)

Question 120052: if there are 6 tutors and 42 students, what is the ratio of staff to students?

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Question 120106: 15/20=x/4

Click here to see answer by jim_thompson5910(35256)

Question 120361: Two men, A and B, can paint a house in 8 days. A alone can paint it in 12 days. How long will B take to paint the house by himself.
I am unsure on how to solve this. All I know is that there is some formula to this that involves many proportions. Please help!
Click here to see answer by ankor@dixie-net.com(22740)

Question 120599: i need help with this problem!! The ratio of Alex's cycling speed to Bart's cycling speed is 6:5. Bart leaves school at 3:00 pm and alex leaves at 3:10 pm. By 3:30, Alex is only 2 km behind Bart. How fast is each boy going? PLEASE HELP!!! I AM SORRY IF THIS ISN'T ENOUGH INFO, BUT THAT IS ALL THAT IS IN THE BOOK!!!!!!
Click here to see answer by scott8148(6628)

Question 120601: need help with this problem!! The ratio of Alex's cycling speed to Bart's cycling speed is 6:5. Bart leaves school at 3:00 pm and alex leaves at 3:10 pm. By 3:30, Alex is only 2 km behind Bart. How fast is each boy going? PLEASE HELP!!! I AM SORRY IF THIS ISN'T ENOUGH INFO, BUT THAT IS ALL THAT IS IN THE BOOK!!!!!!
Click here to see answer by scott8148(6628)

Question 120661: solve for x:
x over 60 =3 over 20
Click here to see answer by rapaljer(4671)

Question 120667: Willis scores an average of 7 foul shots out of every 10 attempts. At the same rate how many shots would he score in 200 attempts?
Click here to see answer by nabla(475)

Question 120720: A set of rectangles consists of exactly one rectangle of each possible size such that for each rectangle the area is 24 and the length and width are integers.
Find the proportion of the rectangle in the set that have the perimeter greater than 25?
I don't know how to approach this
Thanks
Click here to see answer by ankor@dixie-net.com(22740)

Question 120669: A train traveled 90 miles in 1in a half hours. At the same rate, how long will take the train to travel 330 miles?
Click here to see answer by rapaljer(4671)

Question 120671: A house that is assessed for 12,00 pays $960 in realty taxes. what should be the realty tax on a house that is assessed for $16,500?
Click here to see answer by checkley71(8403)

Question 120904: Three numbers are in the ratio 2:4:7. If the first number is multiplied by 4, the result is 9 less than the sum of the other two. find all three numbers.
Click here to see answer by ankor@dixie-net.com(22740)

Question 120902: Two angles of a triangle are in the ratio 3:4. The third angle is 15 degrees less than twice the first angle. Find all three angles.
Click here to see answer by ankor@dixie-net.com(22740)

Question 120963: Hello, can you please help me solve for x? x-2/x+6 = x/2. I came up with x=0.
Thank you!
Click here to see answer by stanbon(75887)

Question 120892: A varies directly as h. A = 48 when h = 4. Find h when A = 36
Click here to see answer by ankor@dixie-net.com(22740)

Question 120890: solve for x:
5 over x+2 = 4 over x
Click here to see answer by ankor@dixie-net.com(22740)

Question 120896: A record rotates 100 times in 3 minutes. If side A plays for 22 minutes and 30 seconds, how many times will it rotate?
Click here to see answer by stanbon(75887)

Question 121348: A man who is 75 inches tall is 15 inches on a TV monitor. The image of his friend is 13 inches tall on monitor. How tall is his friend.
Click here to see answer by checkley71(8403)

Question 120891: solve for X:
3x+3 over 3 = 7x-1 over 5

Click here to see answer by HyperBrain(694)

Question 121491: solve for x:
5x-9=8x+6
Click here to see answer by MathLover1(20849)

Question 121491: solve for x:
5x-9=8x+6
Click here to see answer by madhan_math(34)

Question 121490: 3x+7 over 4 =x over 6
Click here to see answer by MathLover1(20849)

Question 121489:
If y varies directly with x and y = 12 when x = 9, find x when y = 15
Click here to see answer by checkley71(8403)

Question 121521: the ratio of students who rode horses to school to students who walked to school was 2 to 9. if 18 students walked to school, how many rode horses to school?
Click here to see answer by Earlsdon(6294)

Question 121488: The ratio of the length to the width of a rectangle is 5:4. If the length is increased by 8 and the width halved, the ratio of the length to the width of the new rectangle is 7:2. Find the dimensions of the original rectangle.
Click here to see answer by jaymore(5)

Question 121828: A brachiosaurus weighed 80,000 kg, but it's brain weights only .2 kg. What would your brain weigh if you were 150 pounds if your ratio was the same as the brachiosaurus?
Click here to see answer by checkley71(8403)

Question 122851: The ratio of females to males in a school band is 7 to 4. If three females and twelve males are absent from practice, the ratio of females to males is 5 to 2. How many members of the band attended practice?
Click here to see answer by ankor@dixie-net.com(22740)

Question 123246: 10/21=5/16a
Click here to see answer by stanbon(75887)

Question 123467: x-r-3/y-s-5 = r/s = 3/5. What is the value of x/y?
Click here to see answer by jim_thompson5910(35256)

Question 123640: I need your help with this last question. It seems easy, but I'm having trouble with it.
Question:
y+10/y+3 = y+1/y-1

Thanks :-)
Click here to see answer by nadinadan(32)

Question 123664: I'm sorry, but I miswrote the problem. Thanks again!
The question is:
Solve for y:
y+10/y+3 = y+1/y-1

y = (?)
Click here to see answer by nadinadan(32)

Question 123670: Please help with this problem...it's a handful. Any help is appreciated. Thanks.
Question:

Solve for y
3(y+7)/7y - (4y-7)/6 = (7y+10)/3y - 2(7y-1)/21
Click here to see answer by stanbon(75887)

Question 123873: I do not understand this..I have to write a system of 2 equations in 2 unknowns and solve each system by substitution.

thanks so so much
Click here to see answer by applesrbest(7)

Question 124185: Question:

Solve for x
2x+5/2x+3 = x+3/x-1
Thanks in advance
Click here to see answer by chitra(359)

Question 124245: Can you tell me if both of these answers are correct?
Problem:
2/9=?/54
Answers:
12 (and)
12/54
Thank you for your help!
Click here to see answer by MathLover1(20849)

Question 124295: Use a proportion to answer the question in terms of y.
What percent of 6y is 24?
Please provide rules for answering questions of this type. My daughter left her book at school, so I can not look at it to determine the way to work it.
Thank You
Click here to see answer by stanbon(75887)

Question 123832: The local movie theater sold 100 tickets for $390. If children's tickets cost $3 and adult tickets cost $6, how many of each were sold?
Click here to see answer by awang1996(50)

Question 122401: This term, 36% of the students in one class are on the honor roll. If 9 students are on the honor roll, how many students are in the class?

Click here to see answer by awang1996(50)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265