# 1.3 /73.814 In significant digit notation, divid, and the answer to two significant digits. I will be happy to critique your work

71,152 questions, page 102
1. ## math

I've worked these problems but I was just wondering if someone could check over them to see if they're correct...if not please help! (u-2)(u+7) my answer: 7u^2-49u (5t-4)^2 my answer: 25t^2-40+16 Thank you :)

asked by krystal on February 16, 2009
2. ## Derivatives

Find the derivative of the following questions; ³√2t/(t^2-4) Every thing is under the ³√ and the / is a fraction bar. My answer is y'= t(2t)^3 Can you check my answer please

asked by Honey on November 7, 2014
3. ## MATH#2

find the solution to system by the substitution method. y=2x+5 y=3x The answer is(5,15). Just don't know how the professor got that answer.

asked by Anonymous on August 20, 2014
4. ## Exponents

x^(-2) = 9 solve for x Steps too I first squared the x on both sides and I was left with x^(-1) = -3,3 but then what would the answer be for x? the answer is supposed to be 1/3, -1/3 but I don't know why

asked by Amy on January 27, 2011
5. ## math

Multiply 2 2/5 x 9/17 Write the answer in simplest form Choose the best answer from the options below: A 48/15 B 85/108 C 15/68 D 1 23/85

asked by makeeda on May 20, 2011
6. ## Math

asked by John on April 25, 2010
7. ## algebra

What percent of 320 is 220 my answer is 6.88 make as a decimal.is this right. -12(

asked by Keaton on February 19, 2009
8. ## Math

Add. Write the answer in simplest form. 1. 3/8 + 4/5= 3/8=15/40 4/5=32/40 15/40 plus 32/40=47/40 47/40=1.175 Please let me know if I got the correct answer or if I did something wrong.

asked by Matt on September 8, 2016
9. ## Math

asked by Cherie on September 8, 2013
10. ## Algebra help 2

Where appropriate, include the approximation to the nearest ten-thousandth. 27.) log x = -3 I have the answer as -3 28.) 7 ^(4-9x)= 49 I have the answer as 2 29.) 8^x =5.2 not sure 30.) 1n x=5/8 not sure Are these answers right?

asked by Shawn on December 1, 2008
11. ## Algebra check

Where appropriate, include the approximation to the nearest ten-thousandth. 27.) log x = -3 I have the answer as 1 28.) 7 ^(4-9x)= 49 I have the answer as 2/9 29.) 8^x =5.2 not sure 30.) 1n x=5/8 not sure Are these answers right?

asked by Shawn on December 1, 2008
12. ## pre-calculus

What is the polar form of the equation 3x - 4y = 12? The answer is r = 12/ (3cosx - 4 sinx) (x = theta) I don't know how to get the answer though.

asked by Jamie on April 6, 2010
13. ## math

Could someone check my answer? I need to figure out the equation of the circle given the center of (-9,0) and radius of 7. (x-(-9))^2 + (y-0)^2 = 7^2 answer(x+9)^2 + (y-0)^2 = 49 is this correct?

asked by sam on September 20, 2009
14. ## math

PLEASE HELP Could someone check my answer? I need to figure out the equation of the circle given the center of (-9,0) and radius of 7. (x-(-9))^2 + (y-0)^2 = 7^2 answer(x+9)^2 + y^2 = 49 is this correct?

asked by sam on September 20, 2009
15. ## Calculus

What is the limit (as u--->2) of square root(4u+1)-3/u-2. I got 1 as an answer, but I want to check if that's right. I heard it could be something else so I'm unsure and doubtful of my answer.

asked by Ezra on September 16, 2013
16. ## Math

Hi! So I did this world problem and I got the answer "4194 units" (which is right) however, it says to round my answer to the nearest whole unit. How do I do that? Thanks!

asked by Tamia on November 14, 2014
17. ## algebra

Pa^t and Pe^rt are two forms of the same exponential function. One would expect to obtain the same answer for f(18). Explain why you may not get the same answer for f(18) in practice.

asked by Anil on November 5, 2011
18. ## Math

Write each equation in standard form. 1.y-3=-2.4(x-5) -The answer I got was 2.4x + y = 15. Could someone please check my answer and tell me how to solve it if it wrong? Thanks

19. ## Science

asked by libby on February 28, 2011
20. ## Math

Multiply or divide. Write the answer in simplest form. Type your answer as a number. 2 1/4 • 2 2/3

asked by Anonymous on December 20, 2012
21. ## Chemistry

You have the alkane C7H16. What is the IUPAC name. I tried heptane and 4-ethyl-3-methylheptane, but it still says my answer is wrong. What would be the answer then.

asked by George on November 15, 2008
22. ## algebra

I need to find the inverse of this function f(x)=9x+7 please show steps. The answer I got is not one of the multiple choices I have. The answer I got is f^-1 (x)=1/9x-7/9

23. ## find the unit rate

1. 7 apples for \$1.00 2. \$20 per dozen tarts Please answer quickly I work hard and need the answer by tommorow!

asked by seb on April 23, 2008
24. ## Math - derivative of f(x) (check)

asked by Anonymous on October 27, 2010
25. ## Math/Algebra

y^2+6+2(y^2+5) My answer is 3y^2+16 (simplifying) but the hawkes learning system won't accept this answer. Am I missing something?

asked by Laurie on September 4, 2012
26. ## Math

A multiple-choice question has five possible answers. What are the odds in favor of guessing the right answer? A.2:3 B.4:1 C.1:4 D.3:2 Is the answer C? Thank you

asked by Kanani on April 7, 2015
27. ## Algebra

Think we have it but want to make sure Write the standard form of the equation of each line using integers. 1. Y=-8/5x-4 Answer 8x+5y=-20 2. 4y=12+3x Answer -3x+4y=12 Thanks

asked by Mom on November 15, 2015
28. ## calculus

The function f is twice differentiable, and the graph of f has no points of inflection. If f(6)+3, f'(6)=-1/2, and f"(6)=-2, which of th following could be the value of f(7). A.)2 B.)2.5 C.)2.9 D.)3 E.)4 the answer is A. but what are the steps to reach

asked by Confused on April 26, 2011
29. ## Chemistry

You have the alkane C7H17. What is the IUPAC name. I tried heptane and 4-ethyl-3-methylheptane, but it still says my answer is wrong. What would be the answer then.

asked by George on November 15, 2008
30. ## Math

How do you find x in y=-5x^2+30.5x without using the formula x=-b+ root b^2-4ac.... They say to factor it. But it's not working for me. The answer is suppose to be x= About 0.7 and 5.4. But I can't get that answer

asked by Anonymous on April 7, 2015
31. ## college algebra

solve the following exponential equation. (e^x-e^-x)/2=6 what is the exact answer? x=? what is the answer approx to 3 decimal places? x=?

asked by ALLI on September 5, 2012

46=2-8w-3w I tried adding -8w to both sides and i got the answer wrong... my math text book says the answer should be -4 but i don't know how to get it

33. ## Algebra

Check my answer- Solve the system of equations algebraically. Show all of your steps. Y=x^2+2x Y=3x+20 My answer: X^2+2x+3x+20 X^2-x-20 (x-5),(x+4)=0 x=5, x=-4 y=35, y=8 Thank you!

asked by Angel on April 3, 2017
34. ## college alg

solve the following exponential equation. (e^x-e^-x)/2=6 what is the exact answer? x=? what is the answer approx to 3 decimal places? x=?

asked by MYA on September 5, 2012
35. ## math,bobpursly,

4x-2x^2+4x^3 from 4x^3+x-3x^2 4x^3+x-3x^2 -( 4x-2x^2+4x^3) then changing signs and rearranging terms. 4x^3+x-3x^2 -4x^3-4x+2x^2 answer after ADDING the above.. -3x - x^2 so for the answer isn't it the same as what i had -x^2-3x doesnt' x^2 goes first then

asked by jas20 on February 23, 2007
36. ## Math

what is 10 thirds in standard form? A.10 B.100 (my answer) C.1,000 D.1,0000 Please check my answer!!

asked by Clairty on September 29, 2016
37. ## Chemistry

You have the alkane C6H17. What is the IUPAC name. I tried heptane and 4-ethyl-3-methylheptane, but it still says my answer is wrong. What would be the answer then.

asked by George on November 15, 2008
38. ## algebra

1)Write an equation for the parabola whose vertex is at (-8,4) and passes through (-6,-2) answer=y=-3/2(x+8)^2+4 2)Solve x^2>_2x+24 answer=x_6 #1, ok #2, ok

asked by Marissa on August 14, 2007
39. ## calculus

Which of the following is a representation of the domain of the expression: h(x) = 12x + 3 / 2 - square root over x a)[0,4) b) [(0,4) U ( 4, infinity) I know that the answer is b, but how do I come to this answer?

asked by Vana on September 27, 2008
40. ## chemistry

asked by Anonymous on November 16, 2011
41. ## math i need help miss sue please check

What is the prime number in this fraction 5/6? Please answer that then have another response to that one. What is the square root of 69? Answer that one then simplify this 20/65.

asked by consquela on March 14, 2012
42. ## calc check

if you evaluate the integral of: t csc^2 t dt, is the answer -t cot t + ln|sint| + C Differentiate the answer to see if it is correct.

asked by marsha on May 23, 2007
43. ## Maths

Solve 6x^2-17x+3=0 What is the smaller answer ? Answer -1000 if there is no real value of x that solves this equation

asked by Billy Bob Joe on May 1, 2018

subtract 1/3 from 1/2 use 6 as common denominator would be 2/6 -3/6 answer? what would be my next step subtracting these would give me a neg answer

asked by jill on January 3, 2011
45. ## math

Find the value of k such that the system of linear equations is inconsistent. {4x-8y = -3 {2x+ky = 16 I know that the answer is k = -4 but I don't know how to solve to get that answer.

asked by anonymous on May 7, 2008
46. ## geography

Which of the following countries contains the most arabs? A. Jordan B. Israel C. Syria D. Lebanon I think the answer is either B or C, but i really need a definite answer! Thanks!

asked by Katie on November 2, 2016
47. ## Calculus AB

The limit as x approaches infinity of (1+1/x)^x. I tried this twice and I got an answer of e both times, but the answer that my teacher read off in class was not e. Please help.

asked by Jake on May 26, 2011
48. ## maths

I've to solve the following absolute value equation: |x - 3| - 4 = 0. I found one of the answers which is 7 i.e. |x - 3| - 4 = 0 x - 7 = 0 x = 7 However, my textbook also includes -1 as the answer. How did they get this answer?

asked by bindiya farswani on January 30, 2010
49. ## math

I am bouncing this questions for an hour now and still have not come up with answer I believe in. Can you solve for a variable in an equation? Explain the answer Can you help?

asked by Shaira on August 2, 2010
50. ## Math

Solve the equation 13r = 3/7. Express your answer in the simplest form. a r = 91/3 b r = 7/39 c r = 39/7 d r = 3/91 Is c the correct answer.

asked by Miya on April 8, 2015
51. ## Calculus ( finding limits)

Find the limit as x-->-inf (x+2)^(3/2)+1 ----------I know that the answer is infinity but I don't know how to get this answer by hand. Could someone please help me? Thanks a lot!

asked by Jess on March 6, 2010
52. ## SAT math

In the xy-plane, the line determined by (6,m) and (m,54) passes through the origin. Which of the following could be the value of m? A) 2 B) 18 C) 36 D) 48 Is the answer B since if you plug it in, the answer is zero? Also if it is, how can you do this

asked by Anonymous on July 11, 2018
53. ## Math: Integers

Is the sum of two integers always greater than the difference between them? Why or why not? Give examples to support your answer. I think the answer is no.

asked by Renee :) on March 29, 2018
54. ## Probability

Suppose that you have two laptops, both of which you begin using at time 0. Each laptop will eventually fail, and we model each one's lifetime as exponentially distributed with the same parameter λ. The lifetimes of the two laptops are independent. One of

asked by A on April 30, 2014
55. ## Math

1. Simplify. 3x^2+ 5x-5x^2-4x+5-2 A.-8x^2-9x+3 B.2x^2+x+3 C.-2x^2-9x+3*** D.-2x^2+x+3 2. Add or Subtract.(8x – 2y) + (3x – 4y) A.11x+8y B.4x-y C.11x-6y*** D.5x+2y 3.(5x^2-4x-1)-(-4x^2-4) A.-9x^2-8x-1 B.9x^2-4x+3*** C.x^2-4x-3 D.9x^2+4x-3 4.The distance

asked by Hot Chick14 on May 18, 2016
56. ## statistics

Im am so lost.... A bank conducts a survey in which it randomly samples 400 of it customers. The survey asks the customers which way they use the bank the most, (1) interacting with teller, (2)atm use, (3) internet bank service. It was also asked their

asked by Kelly on December 5, 2010
57. ## math algebra

wanted to know if I got the correct answer? question (2a10b2)(3a2b2) answer 6a^12+5a^12b^4+b^4

asked by SO LOST on March 30, 2011
58. ## writing in math

stacy multiplied 589 and said the answer was 44. what two patterns could you use to show that her answer is not correct?

asked by shy on January 6, 2011
59. ## Chemistry

What is the concentration of Cu2+ in a solution that is 0.10 M Cu(NH3)4^2+? (Kf = 1.2 x 10^12) The answer is 8.0 x 10^-4 How do I solve the problem to get the answer

asked by Kelly on October 14, 2012
60. ## Math116

asked by M Vance on February 10, 2009
61. ## math

Stacy multiplied 5x9 and said the answer was 44. What two patterns could you use to show that her answer is not correct? ...

asked by scott on February 14, 2011
62. ## Algebra

Linear Equation -8x+4y=-12 Answer book states is y=2x-3 I am not arriving at this answer when I simpify

asked by G on February 22, 2008
63. ## math

(3 + 2(8 + 5 • 2 ÷ 4) – 9) what is the correct answer to this problem I got 59 when i entered it on my sci-calculator But my friend got a different answer of 15

asked by Anonymous on November 27, 2009
64. ## Geometry

Hello, Can you please tell me if I have the correct answer? Thank You my answer: 6m Find the diameter of a circle whose circumference is 18.85m.

asked by Mandi on April 9, 2008
65. ## algebra

ok I have a algebra question how do you find the missing number for 42-9=43-? how do I get the answer and I need to understand it? I think the answer might be 45

asked by julie on December 5, 2011
66. ## Maths

I need to solve this inequality: 3(x-1)^2 > 0 The answer is x ‚ 1, but I don't understand why the answer is not allowed to be equal to 1? Thanks :)

asked by Maria on February 26, 2016
67. ## math

First estimate the answer. Then multiply to find the exact answer simplify all answers 4 1/4 • 9 2/3

asked by semaj on September 8, 2015
68. ## Math

f(x)=1/2(x^2-2x+15) I did the quadratic formula and my answer is 2 plus or minus i square root 8/2. Could someone check my answer please

asked by Pam on February 5, 2017
69. ## Math - Check my answer?

Write the decimal 0.063 as a percent. Answer choices: 0.63% 6.3% 63% 630% MY ANSWER: 6.3%

asked by Kate on January 8, 2014
70. ## Algebra check

Convert to exponential equations. 12.) m=log3 9 I have the answer as 3^m =9 13.) log2 64=6 I have the answer as 2^6 =64 Are these answers right?

asked by Shawn on December 1, 2008
71. ## math

Stacy multiplied 5x9 and said the answer was 44. What two patterns could you use to show that her answer is not correct?

asked by sandra on February 13, 2011
72. ## math

asked by semaj on September 8, 2015
73. ## math

asked by jazmin on October 7, 2010

Simplify the algebratic expression below. -3[(5x-2y)-4(x+y)+2y]-2(8y-3x) For my answer I got -13x-9y which is wrong because its not in the answer choices.

asked by Anonymous on May 7, 2015
75. ## math

Subtract: 5/6 - 3/6 Write the answer in simplest form Choose the best answer from the options below: A 2/6 B 1/6 C 1/3 D 9/6

asked by asm on August 12, 2014
76. ## social studies

In Paraguay, what type of money do they have/use and what are some facts about their culture? PLEASE ANSWER, SOMEONE! But only if you KNOW the correct answer or think you know!

asked by Danielle on September 21, 2009
77. ## math

Divide 5 / 7 ÷ 5/2 Write the answer in simplest form Choose the best answer from the options below: A 2 / 7 B 7 / 2 C 10 / 35 D 35 / 10

asked by anette on May 20, 2011
78. ## Math

asked by Diana on October 8, 2015
79. ## Math ASAP

how do you solve 5x/2-10=x/4-1 and..... 3x/10=9/5 5x/2 -10 = x/4 - 1 Combine terms: 9x/4 = 9 9x = 36 x = 4 3x/10 = 9/5 15 x = 90 x = 6 the answer for 5x/2-10=x/4-1 is -2.875 and also i beleive the answer for numba 2 will be 1.8

80. ## precalculus

Is my answer correct, I am confused by this question? Find the second difference for the sequence. 7, 6, 7, 10, 15, 22, …. 1 2 3 5 answer: 2

asked by sally on December 15, 2016

asked by Kaleigh-Anne on March 20, 2008
82. ## math

First estimate the answer. Then multiply to find the exact answer. Simplify all answers. 8 1/6 . 9 3/4

asked by Rochelle Ambush on January 20, 2013
83. ## math

please answer this my topic is all about sums and differences of rational algebraic expression 3/5 + 4/5 another is x/3 - y/3 another is 7/a + 2/a please answer it thanks!!!!!

asked by jazmin on October 8, 2010
84. ## voc electronics

what happens when iron is heated It gets hot. Ha, Ha. But I'm sure you didn't want that for an answer. Please be more specific about what you are looking for and I can refine that answer for you.

asked by alan on February 27, 2007

The answer I get for the problem 3 1 4 _____ - ____ = ___ 3x-9 x-3 9 is 4/0 which is undefined. Am I doing something wrong or could this answer be right?

asked by Taylore on December 21, 2010
86. ## alg2\trig

if a3= 17 & a8=37 are terms in annarithmetic sequece, fina a1 & d. the answer is a1=9 & d=4 but i don't understand how they got the answer, please help!

asked by dianela on January 29, 2012
87. ## Math

Sayed gave an answer of 6 6/7 for the problem 4 2/7 times 1 3/5. Using the estimates, is this a reasonable answer.

asked by Ishmel on May 5, 2015
88. ## grammar

I have to answer dependent/independent clause or neither. The next question says "because of the pictures in them." I think the answer is neither because it is a phrase. Is this right? Thanks.

asked by Sarah on September 27, 2010
89. ## Math

Solve the equation. Choose the answer in simplest form. 4x = 8/7 a. 1/28 b. 1/7 c. 2/7 d. 7/2 Would the correct answer be b.

asked by Jay on April 8, 2015
90. ## Calculus

Evaluate lim x->0 (Sin^3 3x - 3x^3/x^3 x^4) I got zero (0) to be my answer by imputing 0 in place of x but am not so sure if the answer should be 0, am thinking it should be like 1/0 or something like that.

asked by Francis on January 28, 2015
91. ## Math / Fractions

If 3/8 + 3/4 = \$36.35 and the room to cover is 12 ftX 12 ft how much will the total cost be. I do not want the answer, I want you to explain to me HOW to GET the answer.

asked by lifeontwofeet on September 6, 2008

in the order of operations equation 8-(24/8)^2 I Alex answered with 24/8= 3 3^2 = 9 8 - 9 = answer You cannot subtract 9 from 8. So how do you get the answer?

asked by sandra on October 8, 2010
93. ## high school algerbra class

2/x^2-4+3/x^2+x-6+1/x+3 Could someone help me with this fraction? I have tried to answer it over three days now without any luck. If anyone can help please show the steps,so I can see how you got the answer. Thanks in advance!!!

asked by kenneth on August 24, 2010
94. ## Algebra

Simplify a^5 b^3 _______ ab^8 Answer: a^4 b^-5 Is this correct? {Note: There are no parentheses in either the problem or the answer}

asked by Anonymous on September 12, 2009
95. ## Math

Here is the question: Use rounding to estimate the answer: 783 divided by 4. My answer is 195 is this right?

asked by B.B. on June 18, 2009
96. ## algebra

I just want to see if my answer for this problem is correct or not. The aswer I have is 3x^2-3/7x^3-3x^2-17x+6. I was just wondering.Can I factor my answer? 3x-3/7x-3*x+1/x^2-1

asked by kim on August 31, 2010
97. ## math

Divide 2 2/5 ÷ 2 2/4 Write the answer in simplest form Choose the best answer from the options below: A 24/25 B 23/25 C 22/25 D 21/25

asked by anette on May 20, 2011
98. ## MATH

PLEASE TELL ME THE ANSWER OF HOW TO DIVIDE 602.88 DIVIDED BY 200. WHAT WILL BE THE ANSWER ? DON'T USE CALCULATOR PLEASE.

asked by Johaann on July 21, 2013
99. ## Algebra

What value(s) of x make each of these undefined? #1: 25x-x^2 my answer: x=0 and x=25 #2: 5x^2-3x-2 my answer: x=1 Are these both correct? Isn't there another solution for #2, or is the only one x=1?

asked by Anonymous on September 22, 2009
100. ## math

First estimate and then multiply to get the exact answer give your answer as a whole or mixed number 2&1/5 •5&1/3•3

asked by semaj on September 8, 2015