can someone correct this for me or help me. 6x^2y^3+ 9x^2y^3 divided by 3x^2y^2 my solving and answer is: 15 x x y y y ---------- = 5y 3 x x y y Looks good to me. I've never thought

96,066 results

Math - repost for Anonymous

Can someone show me the steps to these questions (I will provide the correct answers)? Thanks in advance. 1. When the polynomials 4x^3 + mx^2 + nx + 11 is divided by x + 2, the remainder is -7. When the polynomial is divided by x - 1, the remainder is 14. What are the values ...

Math

Can someone correct it Evaluate the following expressions numbers 3-4 3) [(2+3)^3-4(5)]+7 My way of solving: [(5)^3-4(5)]+7 [123-4(5)]+7 [123-20]+7 [103]+7 My answer: 109 4) [25/ (2^3-3)]*2 My way of solving: [25/(8-3)]*2 [25/5]*2 [5]*2 My answer:10 Thanks for showing your ...

Math, Algebra

Can someone correct my homework. Evaluate.For number 1 1) /4/ + /-3/ My answer: 7 2)Business & Finance: A country exported $60,00,000 less than it imported, creating a negative trade balance. My answer: -60,000,000 Evaluate the following expressions numbers 3-4 3) [(2+3)^3-4(5...

Math

Can you help me check if I'm doing this correctly or not? I'm solving this quadratic equation by us ing the quadratic equation. -9v^2+35v-30=1-v -9v^2+36v-29=0 -36 ± √36^2-4(-9)(29) divided by 2(-9) -35 ± √1296 + 1044 divided by -18 -36 ± √2340 divided by...

math

To solve 3/4 divided by 2/5, Elisha writes, 3/4 divided by 2/5 is the same as 15/20 divided by 8/20. So the answer to 3/4 divided by 2/5 is the same as 15 divided by 8. 1. Is Elisha's first claim, that 3/4 divided by 2/5 is the same as 15/20 divided by 8/20, correct? 2. Is his...

math

can someone correct this for me please... Solve for x: 6x minus 1 divided by 5 minus 2x divided by 3 equals 3 my answer: x = 6 Solve for x: 3/7x = 15 My answer: x = 35 correct, as best I can tell from the description. Thank you.

Tina

How do I solve this? (2/3^2 divided by 4/5 divided by 1/3? I keep trying and anm coming up with the answer 25/4. Can someone check and see if I am wrong or right, and see what the answer is. Thanks! sorry- 2/3^ divided by 4/5 divided by 1/3 2/3 squared is 4/9. Divided by 4/5 ...

math, algebra

can someone correct this for me or help me. 6x^2y^3+ 9x^2y^3 divided by 3x^2y^2 my solving and answer is: 15 x x y y y ---------- = 5y 3 x x y y Looks good to me. I've never thought of showing x^2y^3 as xxyyy. That a neat wrinkle. We see quickly that the Xs cancel and all but ...

algebra,math

can someone correct these. and help me DIrections:Factor (3) 4x^2-4x-15 My solving: 4*x*x-4*x-15 (the star means multiply my final answer: x^3-15 (the ^ means for exponent) (4) 5x^2-26x+5 my solving: 5*x*x-26*x+5 my final answer: x^3-16 I don't understand what you did. The ...

math, beginning algebra

Can someone correct this for me. Directions:Solve 6x-1 divided by 5 minus 2x divided by 3 equals 3 My answer: x = 6 yes If this is what you mean, [(6x-1)/5]-(2x/5)= 3 then yes, x=6 If you mean [(6x-1)/(5-2x)]/(3)=3 then no, x = 0.75

Estimation decimal quotient

Use compatible numbers to find the each quotient ,2.90 divided by 29,48 divided by 3.2, 0.18 divided by 0.33,152 divided by 5.12,41.9 divided by 19,33.90 divided by 10.2, 502 divided by 9.5, 180.8 divided by 6 , 48 divided by 3.33, 0.65 divided by 5.1,18.2 divided by 11, 55 ...

Calculus

How do I solve for lim h->0 (((a+h)^2 + 1)/(3(a+h)+7) - ((a^2 + 1)/3a + 7)) and then all divided by h? The question was use the limit definition to find the derivative of f(x)= (x^2 + 1)/(3x + 7). I tried solving what I did above, but had no luck. I used wolfram alpha to ...

Geometry

I need help solving for the height of a trapezoid and finding the correct final answer for a semi circle (a half circle).In area form Here's what I have so far: Trapezoid Formula: 1/2(b1+b2)h My Answer:1/2(5+15)=10 (My bases are 5 and 15) I need help solving for the height now...

math

To solve 3/4 divided by 2/5, Elisha writes, 3/4 divided by 2/5 is the same as 15/20 divided by 8/20. So the answer to 3/4 divided by 2/5 is the same as 15 divided by 8. Is Elisha's first claim, that 3/4 divided by 2/5 is the same as 15/20 divided by 8/20, correct?

algebra

Find the quotient when (2x^2+5x+2) is divided by (x+2). *** Can someone tell me if i got this answer right if not correct it*** Answer: (2x+1)

math , algebra

Can someone correct these (1) -5^2-3 25-3 22 (2) The sum of m and n, divided by the difference of m and n. My answer: (m+n)/ (m-n) (3) The quotient when 3 more than a number is divided by 3 less than that same number My answer: (x+3)/(x-3) These are all correct.. Trish, the ...

algebra

Can someone correct them 9)Science:Jose rode his trail bike for 10miles. two-thirds of the distnace was over a mountain trail. How long is the mountain trail? My answer: 2/3-10=9 miles 10) perform the indicated operations 3 and 3/4 (divided by ) 1 and 3/8 My answer:2.72 9) 2/3...

Math

12) 2 1/7 x 3 2/3= 15/7x11/3=165/21=55/7=7 6/7 13)Divide. Write the answer in simplest form 3/7 divided by 2/3=9/14 14)1/8 divided by 3/4=1/6 15)2 1/7 divided by 3 2/3=45/77 Can you please check to see if I got the above answers correct Thank you

Math

Write the decimal equivalent, using the bar notation. 5/11 I am wondering if I am doing this correct? 11divided by 5 which equals 0.4545 with the 45 repeating. 5 divided by 11. Not 11 divided by 5. But you came up with the correct answer. It would be .45 with a line over the ...

Elementary Satistics

Test the following function to determine whether it is a probability function. If it is not, then make it into a probability function. (Give your answers correct to one decimal place.) R(x) = 0.2, for x = 0, 1, 2, 3, 4 (a) List the distribution of probabilities. R(0) =0 ...

Chemistry

Good morning. I need help solving 2 problems for chemistry. For #1 I need someone to check my work and tell me if I did it wrong and show me how and where I went wrong. And for #2 I need someone to help me figure out how to solve it and explain. 1. With the balanced equation ...

math

Please can you help me with the following two questions? A. By making use of the correct order of operations, which of the following 3 equations are possible. 1) (35-13)x3= 2) 35-13x3 3)35-(3x13) B. Which of the following does not represent a whole number? 1) 7 x 7 divided by ...

Math

Evaluate the expression. (1)1/3 divided by 1/6= 2 Answer (2)6 divided by 2/5= 15 Answer (3) 4/9 divided by 2/3 dividied by 5/6= Answer 4/5 (4) 7/8 mulitplied by 4/5 divided 7/20=Answer 2 Please help Ms. Sue

Chemistry

Question: the rate constant for the second order decomposition of NOBr(g) is .800 1 divided by MS at 10 degree's C. Suppose a 2.50 L beaker contains NOBr at a concentration at .0680 moles per liter. How much time does it take for 75.0 percent of the sample to decompose. I know...

Math, check my answer. thanks

Consider the following students’ methods of solving the Proportion 8/5 = 20/x and determine whether the methods were correct: Richie: First I divided 20 by 8 and got 2 1/2 Then I multiplied by 5 and got 12 ½ for my answer. Martha: I think of it this way. Every time a person...

5th grade math

sue and dave shared 1/3 pound of cherries equally. What fractional part of a pound did each get? Molly wrote the following equation to solve the problem: (2 divided by 1/3) 2/1/3=n. Do you agree with Molly's equation? support your answer with information from the problem. I ...

math, beginning algebra

can someone correct this for me: Directions: Solve each literal equation for the indicated cariable. A= 1/2 h (B+b) (for b) Area of trapezoid My answer: 2A divided by h minus B equals b. yes.

Algebra

If p(x) is a polynomial and is divided by (x-k) and a remainder is obtained, then that remainder is p(k). If the quadratic p(x)=x^2-3x+5 gives the same remainder when divided by x+k as it does when divided by x-3k find the value of k, k is not equal to 0. This is the answer ...

Math

What is the first step in solving the equation? 3/4 divided by 2/3 Is the answer multiply

Middle school algebra

Please help: Problem: 14 divided by a number is 21. What is the number? my teacher says the answer is 2/3 but I don't get that answer. I set it up: 14/n= 21 Then tried solving as: (n/14)(14/n) = 21/14 My answer = 1 1/2 What am I doing wrong? Thank you

Algebra

Could someone work this out for me? Someone says the answer is 2.34 x 10^-6 but I think it's 2.34 x 10^-4. 2 x 10^-3 = 3 x 10^8 x 1/6 x pi x d Solving for d. Sorry it's kinda messy.

math

Can someone please help with solving compound inequality. !.) 6x-4<-34 or 3x+10>10 2.) -2<=2x-4<4 I'd appreciate if someone can explain not looking for just answer. Thank you

Math

I have more math problems that I will to figure out. 2) 3.1 divided by 4 and 6.4 divided by 9 Estimate 3.1 which would be 3 Estimate 6.4 which would be 6 3 divided by 4 and 6 divided by 9 This one I am totally confused about. The only other way I can think is 32 divided by 4=8...

Algebra

Can somebody please help me with solving this and show steps if they can. Solve the equation. Check for extraneous solutions. 9|9-8X|=2X+3 For my answer I got X=-1 I divided by 9 on both sides I got 8X=2X-6 Then I divided by 6 on both sides and got X=-1

Triangles/Math

All of these are triangles Find the areas of the triangles 1. 8 is base and 5 is height A=bxh divided by 2 8x5=40 divided by 2=20 2. 6 is base and 7 is height A=bxh divided by 2 7x6=42 divided by 2=21 3. 12 is base and 5 is height A=bxh divided by 2 12x5=60 divided by 2=30 4. ...

Math

1 2/5 divided by 21 Which is correct? A. 21/1 x 5/7 = 105/7 =15 or B. 1/21 x 7/5 = 7/105 / 7/7 = 1/15 Neither is correct. The answer is (2/5)/21 = 2/(5*21) = 2/105. Are you sure you copied the problem correctly? 1 2/5 divided by 21 sorry. I missed the "1" out front. The answer...

algebra 1

divide and simplify . 1. 5x^4/3 divided by 5x^2/6 2. 3/a^5 divided by 3/a^2 3. 6m^4/5 divided by 2m Can someone help me do these? and explain them? because I don't understand how to do them. thanks.

Algebra 2

Michaela is solving rational equations. A. What is the solution set of the equation ... x^2-7x+12 (all over or divided by) x^2+x-12 both equal to 3. What I did first was factor both equations geting (x-4) on the top and (x+4) on the bottom both equal to 3. I am confused on ...

math

Which division sentence is related to the given set of subtraction sentences? 36-9=27 27-9=18 18-9=9 9-9=0 Answer choices 36 divided by 9 = 4 36 divided by 18 = 2 18 divided by 9 = 2 36 divided by 12 = 3

mathematics

please if you kow the answer to this help me :) Changeing -1.625 into a fraction solving 4/5 divided by 1/3 2/3 x 1/4 - 5/6 it would be a great HELP

Math

can you please let me know if these are correct: 1. 5 5/6 x 2 4/5 = 16 2. 2/3 divided 3/5 = 1 1/9 or 2/5? 3. 7/12 divided 2/3 = 7/8 4. 3 1/2 divided 3/4 = 4 2/3 or 2 5/7 5. 4 2/3 divided 7 = 2/3 6. 4 1/5 divided 1 2/5 = 3 7. 2/5 x 5/14 = 1//7 8. 2/3 + 1/7 = 17/21 OR 12/21

Math

What are the steps to show the quotient in simplest form? Be sure to include various key words. 0.000027 divided by 0.000009 My answer 0.000027 divided by 0.000009=3 Definition of a quotient The answer after you divide one number by another. The qutient in this problem is 3. ...

Solving Equations with Rational Expressions

Can someone correct me if I trypedthese incorrectly andslolve them PLEASE 5/(y-2)=y+2 (x/3)-(2/3)=(1/y-5) (y+2)/7=1(y-5) (x^2)/(x-4)-7/(x-4)=0 x^2/(x+3)-5/(x+3)=0

statistics

Can someone please tell me how I miss this, I added them up 29 and divided by 8 and came up with 3.625. Below is the question. Please don't send me to other sites and just explain why it is wrong. The number of children, x, belonging to each of eight families registering for ...

math

is this correct? 6k-9=15 k=4 I just want to know if i did it right yes you are correct You didn't show your work so I don't know if you did it right or not. Your answer is correct. i did 9=15 which equal 24 and i divided that by 6 which =4 so k must equal 4..........did i do ...

accounting, correction

can someone correct these for me thanks. If you have a spare minutes. I'll appreciate it.... Identify whether the normal balances (in parentheses) assigned to the following accounts are correct or incorrect. a. Office supplies (Debit) My answer: Correct b. Owner Withdrawals (...

math

Consider the following students method of solving the proportion 8/5 = 20/x and determine whether the methods were correct: Richie: First I divided 20 by 8 and got 2 1/2. Then I multiplied 2 1/2 by 5 and got 12 1/2 for my answer. Martha: I think of it this way. Every time a ...

drbob222 math,correction

i made some corrections for the previous postage can you check those when you get a chance please. Also for this one: my options of answers are: A)2y + 6/3 B)3x- 6 /2 C)2 + 2y D)2/3y + 6 Directions: Solve for x: 3x - 2y =6 3x - 2y = 6 +2y +2y 3x = 6 +2y -- ------ 3 3 so my ...

Math

Divide. Write in simplest form. 5. 1/3 divided by 2/5=5/6 6. 1/9 divided by 1/2=2/9 7.2/3 divided by 1/4=8/3=2 2/3 8. 1/2 divided by 3/4=4/6=2/3 9. 4/5 divided by 2=1 3/5 10. 4/5 divided by 1/10=40/5=8 11. 5/12 divided by 5/6=30/60=1/2 12. 9/10 divided by 3= 2 7/10

Math

3 divided by 1/2=6 1/8 divided by 5=1/4 1/9 divided by 3= 1/27 Please let me know if the above are correct. Thank you

Chemistry

If 10.0g of CaCl2 and 10.0g of NaCl are dissolved in 100.0mL of solution, what is the concentration of chloride ions? I found the molar mass of CaCl2 is 111.0g/mol; the molar mass of NaCl is 58.44g/mol. I divided 10g CaCl2/111.0g CaCl2 I divided 10g NaCl/588.44g NaCl and added...

math/algebra

Simplify: 3/4/4/5 answer choices are: a) 3/5 b) 5/3 C) 15/16 d)16/15 How do I go about solving this fraction, please show me how to work this. 3/4 divided by 4/5 1. Invert the second fraction. 3/4 / 5/4 2. Multiply the numerators and denominators. What answer do you get? 15/16...

To:Writeacher

Thanks for your help! I have questions of subject math. What is 100 divided by 50? So 100 is the dividend and 50 is the divisor And answer is 50 Am I correct? What do you call the answer of the division problem? Your answer of 50 is correct. The answer in a division problem is...

math

can someone check this for me 11)Subtract 5/6 -3/5 My answer: .23 12)Add 1/3 + 1/5 + 1/10 My answer:.63 13) Divide .write each result in simplest form: 8/9 (divided by) 11/15 My answer: 1 and 1/20 5/6-3/5 is like saying: 25/30-18/30 = 7/30

math

What is the lowest numberthat has a remainder of 1 when divided by 2 and a remainder of 2 when devided by 3 and a remainder of 3 when divided by 4 and a remainder of 4 when divided by 5? The answer is 59. There is a general method for solving such problms, but in this case you...

math/ algebra 1

can someone please help me explain how they got this answer and can someone please show me the steps into solving this question? Q: Four more than the quotient of a number and three is at least nine.

Math

Matt says the expressions 12 divided by p and p divided by 12 are equivalent. Darla says they are not equivalent. Who is correct. I said yes, if p = 12 the answer would both be 1

5th grade math

solve 1. 8/11 divided by 4 2. 3/8 divided by 3/10 3. 6 divided by 3/4 4. 1/6 divided by 5/6 5. 2 3/4 divided by 11 6. 3 1/2 divivded by 7/8 7. 1 7/8 divided by 1 1/2 8. 5 divided by 4 1/3

Math

I need someone to please check my answer for me... add. -1.6 + (-2.3)= the answer I got was -3.9 is this correct? if not could you tell me why and how to get the correct answer..? thank you

Math check and question

x is a binomial random variable. (Give your answers correct to three decimal places.) (a) Calculate the probability of x for: n = 1, x = 0, p = 0.15 P(x) = Correct: Your answer is correct. . (0.85) (b) Calculate the probability of x for: n = 3, x = 3, p = 0.15 P(x) = Incorrect...

math

can someone check my answer Graph by first solving for y. x + 2y = 8 x-x+2y=8-x 2y=8-x 2y/2=8/2-x y=4-x y=4-x/2 y=4-1/2x

math,correction

can someone correct me on this: Find the mean for the list of numbers: 79, 40, 79, 98, 40(round to the nearest tenth) this is what i did: I added all the numbers then divided by the amount so it would be: 336/5 = 67.20 i don't round further i leave it as is: correct.

physics

4.8mF capacitor in series with 500 ohm resistor is connected, via a switch, to a 12V battery. What is the current through the resistor at t=1.0s after the switch is closed? I tried doing I^2R = 1/2 CV^2 and solving for I but the answer wasn't correct. can some1 please help? ...

math

4^2(4squared)>or=-2(x-5) 16>or=-2x+10 -10 to both sides 6>or=-2x 6/-2>or=-2x/-2 -3<or=x I believe this is correct and I changed the direction of< since we divided by a neg. Did I get the correct answer Thanks and Happy New Year

Math Inequalities

-9/8x greater than or equal to -1/16 can someone please check my answer? my answer is x greather than or equal to 1/18 is this correct? if not what is the correct answer and what is the correct way to solve this problem..maybe I missed a step or did not do math correctly....

Math

Can someone correct them 5) Write fraction as a percent 7/8 My answer: 0.875=87 1/2% 6)Write each decmal as a percent 0.008 My answer:8% 7) Write as a decimal 160% My answer:1.60 8)Write as a fraction 52% My asnwer:5/10 5) Write fraction as a percent 7/8 My answer: 0.875=87 1/...

UOP

help solving 4c divided by 2c minus 4 plus 2c divided by 4c minus 8

math

When a positive integer, n, is divided by 24 the remainder is 18. When n is divided by 8 the remainder is: A.0 B.1 C.2 D.4 E.6 I tried doing n/24=18 and I got 432 and when I divided it by 8 I got 54; am I misinterpreting the question? I really see no other way to do it. Can ...

math correctionplz

can someone correct these also for me.. Which of the following is not a polynomial? a) 24 b) 4x^3+5x-1 c)2x-(1)/(x) d)3xy^2+xy MY answer is: A Simplify. write your answer with only positive exponents (y^5)/(y^10) Possible answers: a)y^2 b)(1)/(y^2) c)(1)/(y^5) d) y^5 My answer...

math, algebra

Can someone correct these for me Directions: Write each of the following phrases, using symbols. (1)The sum of m and n, divided by the difference of m and n.

math,help

on one of last week homeworks i got this one wrong can someone explain to me what is the correct format. The demand supply equations for a certain item are given by: D= -5p+40 S=-p^2+30p-8 The correct answer was: $1.43 how do you get to this answer because i've tried it and it...

College Chemistry

The rate constant for decomposition of compound X was determined to be 1.0x10^-4 s-1 at 298 K and 1.0x10^-2 at 365 K. The activation energy for reaction is: I don't know if this is correct 8.314 x 10^-3 x 298x365 divided by 365 - 298 x In 1.0 x10^-2 divided by 1.0-4. This ...

Nth

Explain how the answers for 20 divided by 1/7 (140), 20 divided by 2/7 (70) and 20 divided 6/7 (23 1/3) are related. Show why this makes sense. Please answer my question

Chemistry

Complete each calculation. Express your answer to the correct number of significant digits. a)4.02mL + 3.76mL +0.95mL b)(2.7 x 10^2m) x (4.23 x 10^2m) c)5092kg divided by 23L d) 2-6.3 + 6-7 e)(6.853 x 10^3L) + (5.40 x 10^3mL) f)(572.3g + 794.1g) divided (24mL + 52mL) My ...

math,correction ,

can someone correct these for me please... Remove the parentheses. -(3x+5y) My answer: -3x-5y Find the value of the polynomial -x^2+3x-1 when x=4 My answer: -5 multiply. 10x(-4x-7) my answer: -40x^2-70x all correct. awsome.....thank you...i just want to make sure....

Chemistry

for each of the following, give an answer with the correct number of significant figures: A. 400 times 185 b. 2.40 divided by 4 times 125 c. 0.825 times 3.6 times 5.1 d. 3.5 times 0.261 divided by 8.24 times 20.0

Math

Hi! My teacher told my class that the answer to this question is "1-sin x/cosx" but she wants us to figure out why. I tried solving it but I didn't end up with the answer given. Can someone help me? Thank you! Problem: cos x/1+sinx

Chemistry please help

Complete each calculation. Express your answer to the correct number of significant digits. a)4.02mL + 3.76mL +0.95mL b)(2.7 x 10^2m) x (4.23 x 10^2m) c)5092kg divided by 23L d) 2-6.3 + 6-7 e)(6.853 x 10^3L) + (5.40 x 10^3mL) f)(572.3g + 794.1g) divided (24mL + 52mL) My ...

Calculus

I am having trouble differentiating x^2 + 2lny = y (solving for dy/dx). I know that I need to do implicit differentiation, but the answer I get is not correct. The answer I got was (2x-2xy)/2, but the answer is (2xy)/(y-2). How do I do this problem?

Algebra: exponents

(b^(-4y+7))(b^y) / b I got 1 / b^(3y-8) but the answer is supposed to be 1 / b^(3y+6) ? could someone write the steps to solving this?

algebra

can someone plz show the steps to solving equation. i believe the answer is 36. (6^5)/(6^3)

algebra

• After solving a system of linear equations, how can you check your answer to determine whether it is correct? Demonstrate the process of checking an answer with an example

algebra

Can someone let me know if I hve the correct answer? Divide and simplify (x^2-16)/(49x+196)÷(x-4)/28 I came up with the answer 28/49 is this correct or can it be simplified more?

math 116

After solving a system of linear equations, how can you check your answer to determine whether it is correct? Demonstrate the process of checking an answer with an example.

Math

Simplify: 5x{24-19)x[25+23)divided by 12-(9-7)} Please help! Subject is algebra. sorry- please help! Am I working the problem correctly? IS THE ANSWER 50? 5x{24-19)x(25+23)divided by (12-(9-7)) = (5x5x48)/(12-2) = (25 x 48)/10 = ? No, the answer is not 50. As best as I can ...

Math

8 divided by 4-2+5 divided by 3+10 divided by 24 divided by 2+10-16 divided by 2 =0 Put brackets around numbers to make sentance true.

Math

Simplify each expression and state any non-permissible values. (4 marks - show your work) 4x-1/x^2+7x+12 divided by 2x-1/x^2+x-12 My work on simplifying the expressions: 4x-1/(x+3)(x+4)divided by 2x-1/(x+4)(x-3) If I've gone wrong please help me understand where I went wrong ...

math

Atdewberry Elementary there are 5 times as many boys than girls. Let (b) represent the number of boys. Which expression shows the number of girls students at the school. a. 5xb b. 5 divided by b c. b divided by 5 d. bx5 my answer is B. Is this correct?

math

can someone check this (9-2)squared +(7-10 divided by 5) 49 + -3 divided by 5 49.6

Algebra 1

Harrison predicted that the actual quotient for 57,872 divided by 305 will be less than the estimate 60,000 divided by 300 =200. Is Harrison correct. Explain how Harrison arrived at his prediction without dividing the actual numbers. Please help answer. Thanks

Math

Write the following decimals as fractions and find the Quotients. 4.5 divided by 0.9= 0.6 divided by 0.12= 1.2 divided by 0.5= 22.5 divided by 0.5= 0.18 divided by 0.03=

math

will someone check to see if I have this question correct please. divide and simiplify to lowest terms. __2x^2-8_ divided by __x-4__ 5x-8 5x-8

math

(14 hr 3 min) divided by 3. how do i go about solving this

Fractions/Math

7/8 divided by into 3 1/2 please help I got 0.014 is this correct and 2 1/4 divided by 1 1/7

Math

Courtney and Kurtis are planning to travel 160 km in a car by travelling at x kilometres per hour for the first half of the distance, and then increasing their speed by 10 km/h to finish the distance. Which is the correct simplified expression for the total time of the trip? a...

math

when 7x^4-49x^3+7x^2 is divided by 7x^2, the quotient is when I divided I got x^2-7x+1 Is this correct?

math

can someone simpilfy this? 1+2/x-1 divided by x^2/x divided by x^2+x-2

arithmetic

On one of the questions of a recent math test, a student divided by 9 instead of multiplying by nine. This computation gave an answer of 18. What's the correct answer?

English

This was a question asked in our last test Either of her eyes --------- not work well. (Do, does, is) I answered 'do' but some of my friends say 'does' is the correct answer. Now I am really confused. Please someone help. What's the correct answer???

Math

What is the first step in solving the equation 3/4 divided by 2/3

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  66. 66
  67. 67
  68. 68
  69. 69
  70. 70
  71. 71
  72. 72
  73. 73
  74. 74
  75. 75
  76. 76
  77. 77
  78. 78
  79. 79
  80. 80
  81. 81
  82. 82
  83. 83
  84. 84
  85. 85
  86. 86
  87. 87
  88. 88
  89. 89
  90. 90
  91. 91
  92. 92
  93. 93
  94. 94
  95. 95
  96. 96
  97. 97
  98. 98
  99. 99
  100. 100