# Algebra, help + check please

104,559 results, page 27

### Math

Q. When your doing a multiplication problem, for example 84 times 37 = 3,108, how do you check the answer without a calculator? - A. I'm kinda confused on how to check the answer, do i do 84 times 400??

### Mathematics

if d sum of two numbers is 8 and their product is 15.if the answer of this equation is 3and5 find the number and check let the two numbers be xandy and you must check

### ged math

Using estimating.\$195 of erin's \$1190 monthly check goes for a car payment. What percent of Erin's check is used for this payment?

### Math Check

Hi! Can someone check my answer for this question? Thanks! Question: List the following circles in order based of their radius. List them from smallest to largest. A.) x^2+y^2-6x+8y-9=0 B.) (x-3)^2=9-(y+4)^2 C.) (y+4)^2=3-(x-3)^2 D.) (x-3)^2+(y+4)^2=1 My answers: d,b,c,a

State whether the expression is a polynomial. If it is, state the degree. a) 3x^2 - 7x + 2 = yes;3 b) 3x - 2/x = No c) sqrt2x^2 - 3pi = yes;2 sqrt2x + 5x = yes;1 Am I correct?

### chemistry

Please check this and make sure i did it right.. How many centimeters are in 8534 millimeters? And i got 853 centimeters.. is that right? thanks!

### Math - derivative of f(x) (check)

f(x)= (x^2-1)^3,is its derivative f'(x)= 6x^5 -12x^3 + 6x. Is there an alternative answer, because a computer generated answer is diff then mine. please help.

Find the derivative of f(x)=7x-19 at x=2. I think that the derivative would be 7 and theb times 2 so 14. Is this correct or would it just be 7.

Use a cofunction to write an expression equal to csc(4ð/11). Is the answer csc(4ð/11)= 1/sin(4ð/11)

Find the unit vector in the direction of <-1,-2>. Do not approximate any numbers in your answer. I get (-1/sqrt10) and (-3/sqrt10)

Which equations are dimensionally correct? F=ma E=max X=(1/2)at^3 V=sqrt(2*fx/m) E=(1/2)mv I think that F=ma , E=(1/2)at^3, V=sqrt(2*fx/m) are correct. Would you agree?

### French

Could you please check this sentence? J'habite à Paris avec ma grand-mère, mère et mon grand-père.

### Math

How many factors do the number 8 and 9 have in common? I got, 8:1,2,4,8 9:1,3,9 My answer: 1 Can you please check my answer to see if I got it correct?

### Algebra Help

Let x = log_2 1/8 Write the exponential form of the equation and solve the equation for x. Does this work? Thanks! Exponential form is 2^-3=1/8 To Check: 2^-3=1/2^3=1/8

### Math Check

Can someone check to see if I'm right? Thanks! Question: Determine if v and w are equal If v = Ray AB and w = Ray CD, where A (23, 11), B (10, 15), C (13, 15), and D (0, 11. (True or False) My answer: False

### Math Help Please!!!

Solve the equation:(x+3)/-3=(x+3)(x-1) Divide both sides by (x+3), multipy both sides by -3. I Will be happy to critique your work. will it be x=-2? no. 1=-3(x-1) 1=-3x+3 -2=-3x x= 2/3 check that.

The simple interest on a \$14,500 loan at 9% interest for 5 years my answer is \$301.00 per month

### Math-Please Check Work!

Find the image of P(5,-3)under each of the given transformations: 1. r x-axis(5,-3)? 2. Rorigin (-5,3)? 3. R90 (3,5)? 4.T 0,3 (5,0)? 5.r x-axis o T2,2 (7,1)? 6. r x-axis o r y=x (-3,-5)? 7. r y=x o r x-axis (3,5)? 8. R(2,2) o T5,-3 (12,-4)? Thank you!

Find the Avrage value of the function i=15(1-e to the power of -1/2 t) from t=0 and t=4? A.7.5 sqrt 1+4e^-2 -e^-4 <<<<not sure though B.7.5 sqrt 4-2e^-2 + e^-4 C.7.5 sqrt 4+4e^-2 - e^-4 D.7.5 sqrt 5-2e^-2 + e^-4

estimate cube root of 25 by linear approximation f(x+delta(x))= f(x) + (df(x)/x) * deltax 3 + 1/3x^(-2/3) * -2 3 - 2/3x^(-2/3) 3 - (2/3* ((cube root(9))) is this right? thanks

### essay

can anyone help me to check my essays for penn foster ? please!! i wrote it my penn foster returned it. if anyone anyone increase the word and edit my mistake!

### geometry

check my answer please!! find the image of o(-2 -1) after two reflections, first across the line y=-5, and then across the line x=1. (-2,-1) (-1,-6)# (4,-9) (1,-5)

### Algebra

Statins are used to keep cholesterol in check and are a top selling drug in the US. The equation S-1.5x=6.4 gives the amount of sales (S) of statin in billions of dollars x years after 1998. According to this equation, how much will/did people spend on statins in the year 2008?

### mark check my work algebra

a cartoonist uses the function below to calculate the net profit he earns from sellings his drawings.In the function, d represents the number of drawings he sells. N(d)= 30(d)-\$500...what is domain of N(d)? is the answer all non negative real numbers?

### please check my math

2/3 + 1/5= 13/15. Is that right or can it be Reduced? You're good to go. That is correct... and 2nd question: It can't be reduced.... Good Job!

### Math-- PLEASE CHECK

234 - 145 3/4 233 4/4 -145 3/4 ___________ 88 1/4 or am I wrong? How do I solve this if I am wrong? Thank you!! you're correct

### math

[(x-9)/(x^2-9)]-[(1)/(x+3)] I got (6-x)/(x+3) for answer. [(2)/(y-3)]+[£¨4£©/(3-y)] I got (-2)/(y-3) for answer. I'm not sure about the answers, please check them for me and correct me! THANKS A LOT!

### math

[(x-9)/(x^2-9)]-[(1)/(x+3)] I got (6-x)/(x+3) for answer. [(2)/(y-3)]+[£¨4£©/(3-y)] I got (-2)/(y-3) for answer. I'm not sure about the answers, please check them for me and correct me! THANKS A LOT!

Find the center (h,k) and radius of the following circle. x^2 + y^2 - 6x - 2y + 1 = 0 My answer is center= (-3,-1) and radius of 1. Am I correct?

### 8th grade math

7z-z can someone please check my answer for the above math question. My answer is 62 is this correct?

2NO(g) + Br2(g) -> 2NOBr(g) What is the rate equation? My answer is k[NO]2[Br2] Is this correct? Thank you!!!!

### Math: Please check

What is the simplified form of square root 48n^9? I think the answer is: 3n square root 4n^8. Thank You

Calculate the amount of heat in kilojoules reased when 50 of steam at 125 C are converted to 50 grams of ice at -125 C. AHsteam = m * Cp steam * At q1= 50g * 4.184 J/g C * (125-100)C= 5.23 x 10^J q2= m * AH 50g * 5230 J/g = 2.61 x 10^5 J q3= 50g *4.184 J/g C * (100-0)C= 2.10 ...

ok i need help with these questions i have been trying to figure them out and my brain isnt working. please help and thank you ahead of time. if you can help. 4. Q.write and algebraic expression for the product of 15 and c A. IS IS C-15 16. Q. define the variable and write an ...

### Science

In the UK, what is the recommended allowance for: 1) salt in a day 2) water in a day 3) fruit in a day 4) calories in a day men 5) calories in a day women 6) fat in men 7) fat in women my answers are: 1) 6g 2) 6 - 8 glasses 3) 5 4) 2550 5) 1940 6) 7) Please can you check my ...

### thermodyn. please check work

What is the sign of heat(Q), Work(W), or Temperature for these following situations. Say if it's +,-, or 0. 1)You hit a nail with a hammer: +W, Q=0, T=0 2)You hold a nail over a Bunsen burner: Q=+Q, Temp:constant, W=0 3)You compress the air in a bicycle pump by pushing down on...

### Math--I need help!

I have these two questions on my assignment. Please help me. 80 mi. = _______ km. 9 cm. = _______ m. 9cm (1m/100cm)=??? 80miles (1 km/1600m) one mile = 1.6093 km so 80 times 1.6093 = what? one cm = 1/100 m or .01 m so 9 cm = 9 times .01 = what? 9 cm = 0.09 m. 80mi.= 128.72km. ...

### Technology

1. What column do you put deposits in when you are balancing your checkbook? A. date B. transaction** C. debit D. credit 2. When creating a formula for balancing a checkbook, what do you subtract from the credits? A. debits B. check numbers** C. transactions D. dates 3. Why is...

### Algebra please explain

A boat costs \$92,000 and depreciates in value by 15% per year. How much will the boat be worth after 10 years? 18,112.45 78,200 18,941.98 69,000 Is the answer the first one? Could somebody write down the steps for me please? Thanks

### Algebra 2

Can somebody please give me a short explanation (like, a very simple sentence) on how exponents and algorithms are related? I know what they are (for example:) Exponents are the inverse of logarithms and vice versa. 6^2 = 36 Log6(36) = 2 But can somebody please help me explain...

### Genetics (plz check answer)

Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer plz.

### bio (plz check answer)

Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer plz.

### math

2/3 over 10 equals 1.8/r solve for r. (2/3)/10 = 1.8r. First, invert and multiply the denominator; i.e.,10. (2/3)*(1/10) = 1.8/r 2/30 = 1.8/r Now cross multiply. 2r = 30*1.8 2r = 54 Now divide both sides by 2 2r/2 = 54/2 r = 27 check my thinking. check my work.

### Math

Please check my answer thanks :) When repaing an installment loan of \$3,500 with 20 equal monthly payments of \$196 each , the apr of the loan is my answer is 13.5 %

### anna

There is a right triangle. the legs are x and y and the hypotenuse is 120. the angle opposite x is 58. please check my answer. x= 120 y=64 because: SIN58= x/120 COS58=y/120

1) Use the cofunction identites to evaluate the expression without the aid of a calculator. cos^2 18 degrees + cos^2 72 degrees.

### Science-PsyDAG

PsyDAG, could you please check my post on that science experiment thing, if you have time. I posted it yesterday on here, but you were never on. Thanks:-)

### 8th grade math

Can you please check my answer? Selena received \$42 commission for selling a computer for \$1400. What percent is her commission? my answer: 3%

Determine whether on not the following limit exists. If, so compute the limit. lim x->3 of sqrtx - 4 / x^3 +27 sqrt 3 - 4 / x^3 + 27 = sqrt 3 -4 / 54 Is this correct?

CaCl2(aq)+Na3PO4(aq) -----------> Ca3(PO4)2(s) +NaCl(aq)4) If the “H” for this reaction is -45.5 kJ/mol, is the reaction endo- or exothermic? Exothermic

### science

Please check these! Physical or Chemical properties? 1. solubility = physical 2. melting point = physical 3. reacts with water to form a gas = physical

10. In a research proposal, your sources should not have the potential to answer research questions. A.) true *B.) false Thank You

if the sides of a cube are measured with an error of 2% use differentials to estimate the relative error in the volume df= 3x^2 * dx df= 3x^2 * 1/50 df= 3/50*x^2 is this right?

### @JoJay12

I deleted your umpteen questions because you included no answers. If you want help on a few, please post no more than five questions along with your answers. We'll check them for you.

Could someone check these please?I had place a possessive adjective in place of el 1. El hermano de Juan y Pedro se llama Bret Answer: Su hermano se llama Bret 2.Replace los with possessive Los hermanos de Paco y Linda se llama Santiago y Jose Answer: Sus hermanos se llaman ...

### English

Can you please check these other sentences I'm not sure of? Thank you. 1) After visiting the Roman findings (better ruins/remains) in Aquileia, we had a "free lunch". (we were free for lunch, we were free to have lunch where we wanted, our teachers gave us some free time for ...

### previous post

has anyone read my 4 previous posts? I really need someone to check my answers. Please be patient, Erin. Our advanced math teachers are not online right now, it seems. =)

### Law

Please check my answer thanks :) A pre trial conference most likley would occur before dicovery begins but after the complaint is filed True or False I said True

### Health care

Please check my answer thank you :) What is based on per-person premiums or membership fees ? 1. Capitation 2. Fee-for service 3. Medical savings account 4. Retrospective payment system My answer is # 1

### Health/Specialty Exams and Advance Techniques

please check the answer to this question thanks True or False The external auditory canal contains hair and wax-producing glands I said True

### Dogs Hunting Training

Please check my answer thank you very much for all of your help :) Which of the following is not a trained ability ? A. Range B. Pattern C. Gun response D. Reponse to wind and scenting condititions My answer is C

### Math

can someone please check my answers simplest form evaluate 2/3+3/5-5/7= 58/105 6. 3/7*24/25 divide by 6/7= 12/25 8.find GCF 432,360,288=72 9. 1050,9360,330=30 11. find LCM 14,75,78=13,650

I am trying to find the standard form of this equation for an ellipse. 9x^2 + 4y^2 - 36x + 8y + 31 = 0 First I grouped the x and y's together. 9x^2 - 36x + ? + 4y^2 + 8y + ? = -31 + ? + ? Then I factored the 9 and 4. 9(x^2-4x+4) + 4(x^2+2x+1) = -31+36+4 9(x-2)^2 + 4(x-1)^2 = 9...

### Math: please check

A card is drawn at random from an ordinary deck of playing cards. Find the following odds: Odds against drawing a king, queen, jack, or ace Would this not be 16/52=4/13

### Writing

Can you please check my citation? I'm trying to find out if it's correct. "How Deforestation Affects Us." Edu.udym. 11 Aug. 2008.web. 23 Oct. 2010. <url> (I'd put the url if jishka would let me)

If the reaction Cl2 (g) + O3 (g) = Cl2O (g) + O2 (g) occurred in just two steps, what would be the overall order of the reaction be? a. 1 b. 2 c. 3 d. 4 e. not possible to determine from the information given I chose 2 as the answer. Is this correct?

### government

This one im for sure is A but i just want to check and make sure help please. Why did early groups of people form governments? A. to help them survive B. to preserve democracy C. to provide leadership opportunities D. to encourage the arts

### English

Be quiet. Listen to me. Emily, calm down. You are so noisy. Stand up and go to the back. You should remain at the back for the rest of the class. Got it? (Would you check the sentences? Correct errors, please.)

I think its decades Jill enjoys reading about American history, especially the last 40 years, or four _____________, of the nineteenth century. A. centuries B. millennia C. decades D. eras

### Chemistry Help - Check Please

1) Describe 4 processes/forces that can explain all mechanism in Organic Chemistry? My answers: a) Electron Delocalization b) Hydrogen Bonding c) Aromacity d) Nucleophilic Substitution (SN1 & SN2) Thank you!

### German

Can someone please check my German? _____ du die Fragen? A.Beantwortest B.Fragtest <<< C.Weiß D.Lest Wir lernen über Computers in ___. A. Sozialkunde B. Englisch C. Informatik <<<< D. Integralrechnung

### English

Please check this! The diction of "at the tourist centre in boston" can best be described as.. A. Emotionally charged B. Colloquial and relying on slang C. Informal and simple D. Mostly figurative I don't think it's C or D? My best guess is A.

### Science

Which of the following illustrates how fossil fuels can be conserved? A.) driving more frequently B.) developing more coal-burning power plants. * C.) reducing electrical use Can someone check this please?

### algebra

please check and correct if needed. thanks problem: you have coupon of \$50 off your telephone purchase of \$100 or more at bell store. a. write a function relating phone purchase price after coupon, y, to the retail price, x . give the domain of this function i wrote y => (...

### Spanish

Could you please check these -thank you 1.How do you say I am going to wake up early I think it is "Yo me voy a despertar temprano" 2. What is another way of saying "Voy a secarme el pelo. Is it "Me voy a secar el pello.

### Foreign languages

Can you check these sentences, Writaecher? 1) Can you please tell me how far ...... hotel is from the beach? 2) As a matter of fact, I was looking for a hotel on a seafront. Do you think I should opt for the ..... Hotel?

### MATH CHECK ANSWERS

CHECK THESE MATH ANSWERS PLEASE 1. There are 18 boys and 12 girls in a math class.what is the ratio of girls to total students? A.18:30 B.12:30(I PICK THIS) C.30:12 D.30:18 2.which of the following ratios are equivalent to 6:9? Choose all that apply. A.3:2 B.18/27 C.30:45 D.24...

### MATH CHECK ANSWERS

CHECK THESE MATH ANSWERS PLEASE 1. There are 18 boys and 12 girls in a math class.what is the ratio of girls to total students? A.18:30 B.12:30(I PICK THIS) C.30:12 D.30:18 2.which of the following ratios are equivalent to 6:9? Choose all that apply. A.3:2 B.18/27 C.30:45 D.24...

### Management Accounting

well i try to solve this problem but it look so complicated I need to cash buget what's the problem? check the problem i don't get it check the problem i don't get it

### english grammar

I already answer the grammar exam of 100 question, now I want to check my answers if it is correct or not. How can I check my answers.

### To Ms.Sue And All Teachers

I am new in this website. Please help me with my math homework. How do you subtract fractions? How do you subtract 7 and 2/5 AND 4 and 5/10? (7 and 2/5 - 4 and 5/10) How do you subtract 6/10 and 6/20? Thank you! Please visit the following site for a super good tutorial: http...

### math

can someone check my answers please add -3/5 +(8/35) = -13/35 find the reciprocal of 1/3 (9-4)= 5/3 subtract 7/9-(-13/18)=3/2 find the reciprocal of -1/9(-9-3)=4/3

Simplify each expression. 1)(sqrt7 + 5)(sqrt7 -6) My answer is sqrt 7 - 30 Am I correct?

### Algebra2

Check Please? Determine if the given function is even, odd or neither. 1. f(x) = 3x^4 - 2x^2 =Even. 2. f(x) = x^3 + x = Odd.

I'm so confused with these-please check them. ¿Estudias algo los sábados? No, no estudio nada los sábados.Do I need the no, no or just one no, estudio? ¿Hablas a francés a veces? No, no hablo nunca a francés. Once again, do I need no, no hablos or just no, hablo nunca?

### algebra

write an equation of the line containing the given point and parallel to the given line (3,-3) 7x-2y=5 need help please 7(3)-2(-3)= 5 ? 21- 6= 5? this does not look right, please show me where I am supposed to place the (3,-3)to solve the equation thanks

### Programming Logic

How do I write case logic pseudocode and visual logic nested if-then-else flow charts for atm check balances, making remote photo capture check deposits, and perform balance transfers?

### Algebra

Hello....I was helped on this question earlier, but I don't understand why we divide by 2? Please help, please see the below: The president will order 5 turkey sandwich combos and 7 steak lunches and spends \$124.00. The other president will get 10 turkey combos and 5 steak ...

### algebra 2

f(x) =x^4 - x^3 -4x^2 +4. find factor and graph. I only factor to this step: (x^3 - 4x-4)(x-1) = f(x) but i don't know how to continue this step to require factor more completely and graph it. Please help. this is algebra 2. Thank you.

### algebra

1. write an algebraic expression for the word phrase: the quotient of r and 12 a.r * 12 b.r/12**** c.r-12 2. write a word phrase for the algebraic expression: 2t - 9 a.nine fewer than two times a number t***** b.nine fewer than two times a number t c.nine fewer than a number t...

### Algebra

Find three ordered pairs (a,b) that satisfy the equation 3a - 5b = 9. So far, I got (3,0). I'm having trouble finding others. Does anyone have suggestions on other easy ways to find ordered pairs besides guess-and-check? Thank you!

### ALGEBRA

CAN YOU PLEASE HELP, I AM STUCK..THANKS FIND THE DISTANCE BETWEEN (-3,2) AND (1,4) FIND THE DISTANCE BETWEEN (-4,0) AND -5,-3) DETERMINE WHETHER THE ROOT OF 77 IS RATIONAL OR IRRATIONAL. THANKS IN ADVANCE, I APPRECIATE ALL OF THE HELP.... No algebra teacher seems to be online ...

### Math

please help me I am not really sure about this please check answer thanks :) Mary has decided to purchase furniture. She has 2 choices she can pay the full amount of \$4,200.The other choice is to finance the furniture for two years with an installment loan. The loan requires a...

A certain colony of bacteria triples in length every 10 minutes. It's length is now 1 millimeter. How long will it be in 40 minutes? Please help answer thx

### physics

In terms of given quantities, by what amount of time, , does Tim beat Rick? It will help you check your answer if you simplify it algebraically and check the special case . Express the difference in time, in terms of , , and .

### math

The estimated completion time for a inspection consisting of 100 check points is 3 1/3 hours if u take away 3hours whats the estimated rate of completion per check point

### English

Could you please check these few sentences for me, please? Thanks 1) He is ambitious and thirsty for power. He turns into a murderous tyrant as a result of his ambition. 2) A vote was taken (do you know a synonym) in the late afternoon. On July 4 (on July fourth) but on the ...

### Law

If the result of a case is that the defendent has to go o jail for a year then it was likely a malpractice case true or false I said True please check my answer thanks :)

### Anatomy and Physiology

PLease check my answer thanks The burn that involves destruction of the epidermis,dermis and subcutaneous layers. My answer A thrid degree burn