# chemistry- can you check my answers?

81,668 results

**Chemistry(Please check)**

1) The Ka for acetic acid is 1.8e-5. What is the pH of a 3.18M solution of this acid? I did 1.8e-5 = x^2/3.18 x=sqrt 1.8e-5 X 3.18 = 7.56e-3 pH=-log(7.56e-3) = 2.12 The pH is 2.12 2) At 25 degrees celsius, the pH of a 1.75M NaCN solution (the Ka for HCN is 4.0e-10) is ? 4.0e-...

**Math HELP**

I have my answers at the bottom but please do these questions so I can check my answers. Check my answers as well. Subtract these fractions. !Reduce them! 1. 5/7 - 3/10= 2. 11/18 - 5/12= 3. 1/3 - 1/6= 4. 7/12 - 1/16= 5. 7/8 - 3/10= 6. 7/8 - 1/12= 7. 7/10 - 2/5= 8. 3/4 - 1/2= ...

**English**

Now, let's check how well you can use the expressions you've learned. I will distribute handouts. You have to solve the problems. Are you finished? Then, I'll check the answers. Look at the answers on the blackboard. Check your answers. How many students have 10 points? Are ...

**check math**

Here are my answers. Can you check if I got the right answers? Thank you! (x-4)/(x^2-3x-4) = x+1 (x^3-8)/(x-2)=x^2+2x+4 (5-x)/(x^2-25)=-x-5 (x^2-4x-32)/(x^2-16)=(x-8)/(x-4) first one should be 1/(x+1) second is good third: -1/(x+5) 4th is ok Have you not been taught to place ...

**Asap can someone pplz check these answers**

Please check my answers I have 2 do other things right now

**check math**

Here are my answers. Can you check if I got the right answers? Thank you! (x+y)^3= x^3+3x^2y+3xy^2+y^3 [x^(3/2)][x+x^(5/2)-x^2] = x^(5/2)+x^4-x^(3/2) the last term in the second question should be - x^(7/2), (you were adding 5/2 and 2 in the exponents)

**English**

Formative Test Now, let's check how well you can use the expressions you've learned. I will distribute handouts. You have to solve the problems. You will have 5 minutes. Are you finished? Then, I'll write down the answers. Look at the answers on the blackboard. Check your ...

**check math**

Here are my answers. Can you check if I got the right answers? Thank you! 1/(x+h) - 1/x= -h/(x^2+xh) (2/x^2)/(10/x^5)= (x^3)/5 [1/(3+x) - 1/3]/x= -1/(9+3x) 2x/(x^2-6x+9) - 1/(x+1)- 8/(x^2-2x-3)= (x^2+15)/(x^3-5x^2+3x+9) first 3 look ok In the last one I would not have expanded...

**vocab**

does anyone have improving vocabulary skills 4th edition? all i need is sentence check 2 answers and the final check answers and i'll be done with my homework for tonight.

**Math Check**

Hi! Can someone check my answers? Thanks! Directions: Solve each system by using the elimination method. Make sure to write your answer in (x,y) form. 1.) 3x-5y=2 2x+5y=13 2.) 3x+11y=4 -2x-5y=9 My answers: 1.) (3,7/5) 2.) (-17,5)

**Math**

Can someone please check my answers below for accurateness? The instructions are: Differentiate and simplify. 1) y=(2x^2+3x-1)(3x^2-5x-3) y'=(4x+3)(3x^2-5x-3)+(2x^2+3x-1)(6x-5) 2) y=(5x^2+3x-1)(3x^2-5x-3) y'=(10x+3)(4x^2-3)+(5x^2+3x-1)(8x) 3)y=6x^3-7x^2+5x-7+x^(5/3)-7/(x^3) y...

**TO MS SUE**

Please check my answers to my question, I posted this question before but no one answered or helped me. All I need is for someone to check my answers :)

**Math check my answers**

Please check my answers on the following questions Simplify: (X^6)^1/2 = x^3 1000000^1/6 I don't know this one (64n^12)^-1/6 = 1/0.5n^2 (9n^4)^1/2. = 3n^2 36^3/2 = my answer is 2 in the index of the aware root of 36^3 343^-4/3 I don't know this one Thanks

**Math, Can someone check my answers?**

Can someone please check my answers? Tell whether the given equation has the ordered pair as a solution. 11. y = 6x;(3,16) 13. y = -4x; (-2,8) 15. y = x - 3/4; (2,1 1/4) Answers: 11. Not a solution 13. Has a solution 15. Has a solution

**Math: law of exponents check answers**

I know that anything to the power of 0 is 1 but I need help with these 2 questions and check my answers: (xy)^0 / (z^2a^1)= (-2mn^2)^1 / (pqm)^0= (xy^2z)^0= 1? Negative Exponents: it says to leave answers with positive exponents only, I did all these questions so please check ...

**Algebra-Please check**

Please check- sqrt of 2x + 15 = x Answers: -5.3 -3.5 -3 5 I think according to my calculations it would be 5, correct? sqrt root of 7-x = 3-solve for x Answers: -2 2 4 -4 My choice would be 2 Is that correct- I squared both sides and came out with 7-x = 9 and then x = 2 Thank ...

**English**

procedure: Formative Test Now. let's check how well you can use the expressions you've learned. I will distribute handouts. You should pick up a handout on the table. You have to fill in the blanks with suitable expressions. Are you finished. Two minutes left. We'll check the ...

**Science URGENT**

Is there any website or any way I can get the science probe 10 check your understanding answers cause I want to check my answers?

**Chemistry check answers**

HA(aq)+ H2O (l) <-> H3O+(aq)+ A¯ (aq) Given the reaction above, which of the following will cause an increase in the pH of an equilibrium mixture? Give all answers which apply. A) add KA B) add HA C) remove A¯ D) remove HA E) none of these will affect the pH. Answer A ...

**math(check answers please)**

PLEASE CHECK THESE ANSWERS compare the pair of numbers use <,>,= 3/4 _ 6/8 A.3/4=6/8(I PICKED THIS) B.3/4<6/8 C.3/4>6/8 Write the decimal as a fraction or mixed number in simplest form. 3.45 A.4 3/4 B.4 9/20 C.3 3/4 D.3 9/20(I PICKED THIS

**Math Check**

Hi! Can someone check these two answers? Thanks! Directions: Find the correct number of solutions for the following system of equations. 1.) 5x - 3y + 2z = 3 2x + 4y-z = 7 x - 11y + 4z = 3 2.) 2x + y- 3z = 4 4x + 2z = 10 -2x + 3y - 13z = -8 A.) One Solution B.) Infinitely Many...

**Chemistry (URGENT)**

I have a test soon. If you can help me with these questions, that would be great. 1. Define and describe the following. a)Alkaline - metal - base b)Corrosive - burn/eat away - acid c)Caustic - harsh - both? (acid + base) d)Low pH - 0-6.99 - acid Please check my answers and ...

**Science**

Is there any website or any way I can get the science probe 10 check your understanding answers cause I want to check my answers?

**Math Check**

Can someone check my answers? Thanks! Tell whether the system is inconsistent OR dependent. 1.) -7x+6y=-4 14x-12y=8 2.) 3x-y=7 -6x+2y=8 My answers: 1.) inconsistent 2.) Dependent

**check math**

Here are my answers. Can you check if I got the right answers? Thank you! solve for x, where x is a real number. x^2+3x-4=14 x=6,3 (x^4-1)/(x^3)=0 x=1 (x-5)^2=9 x=2,8 2x^2+5x=8 x= [-5+/-sqrt(89)]/4 for first one x=-6 or x=3, factors are (x+6)(x-3) second... also x=0 third ... ...

**check math**

Here are my answers. Can you check if I got the right answers? Thank you! Solve for z: 4x+10yx=0 z=-2x/5y y^2+3yz-8z-4x=0 z=(-y^2+4x)/(3y-8) there was no z in your first equation, from you answer I can tell it should have been 4x + 10yz = 0 If so, the answer is right. last one...

**@ Lucina -- SS**

I deleted your 32 questions because there were no answers. Please post no more than 5 of these questions, along with your answers. We'll be glad to check your answers for you.

**To Sam: Penn Foster answers**

Please do not post any more answers. Jiskha is not a repository for any exam answers. In addition, we have no idea what the questions are. If you want to post a couple of your exam questions along with your answers, we'll be glad to check them for you.

**@Kemon**

I deleted your 19 questions because you showed none of your work and posted no answers. If you'd like us to check a few of your answers, please repost no more than five questions along with your answers.

**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!

**English**

You are going to take a quiz. I'll distribute exam papers. You should write down the answers. Fill in the blanks with suitable expressions. Take one and pass the others to the other students. First write down your number and name on the top of the paper. You have 3 minutes ...

**Algebra**

1. Find the slope of the graph of the linear function f with f(0)=4 and f(3)=13. I have no idea how to do this.. :( __________________________________ Evaluate the function when x=3, x=0, and x= -2. 2. f(x)=-1/2x+3 my answers: 1.5, 3, 1 3. h(x)=5.5x+4 my anwers: 20.4, 4, 7 4. ...

**Beginning Chemistry**

I am really confused weith sig. figs. and it would really help if someone could check my answers. My answers are after each problem Determine the number of sig. figs. in the following (a)12.7040g - 6 (b)200.0 cm - 4 (c)276.2 tons - 4 (e)4.00 x 10^3 - 3 (f)100 degrees C - 1

**Health: Check answers**

Jakob went for lab tests, it took three tries with a needle to get any blood into the vial. Why might that be? Jakob may be dehydrated. Jakob had six vials of blood taken, is this healthy? Yes, if it wasn't then his doctor wouldn't have done that many. Check answers please?

**Math ~ Check Answers ~**

Please Check My Answers. 1: Solve each inequality. m – 7 < 6 a. m < - 1 b. m > 1 c. m < 13 d. m < -13 2: Solve each inequality. p + 12 > 9 a. p > 21 b. p > 3 c. p > -21 d. p > -3 My Answers: 1: b. m > 1 2: a. p > 21

**Algebra**

Would someone please check these answers? Simplify. 3/x-5+1/1-4/x-5 For this answer I got: x-2/x-9 Divide. x^2-49y^2/6x^2+42y/(x^2-7xy) For this answer I got: (x+7y)/6x(x^2+7y) Add. Express your answer in simplest for. x/6+3x/6 For this answer I got: 2x/3 Please check my ...

**Electromagnetic induction-check answers**

Please check my answers: why does an iron core increase the magnetic iduction of a coil of wire? -I am thinking it has something to do with the voltage being increased. Will a cyclist coast farther if the lamp is connected to the generator on his bicycle is turned off? -I say ...

**Math Help? Check my answers.**

Simplify 6 x 3 divide 3 - 1. Pre-Algebra? Answers: 2 3 5 6 My answer: 5

**English**

Why don't we go to the park together? 1. I don't feel like it. 2. I'm sorry,but I can't. 3. I'm sorry I can't. 4. Sorry I can't. 5. Sorry, but I can't. 6. I'm afraid I can't. 7. I'm afraid, but I can't. 8. Afraid I can't. 9. I'm afraid that I can't. ================== There ...

**Math, Help me check my answers**

I took a screen shot of my answers can u tell me if i am right ht tp:/ /prntscr.c om/9zmlo2

**World History Check my answers**

Okay so i put a star* by each of my answers.

**Science 8 - Check Answers**

Please Check Answers. 4. When a fan is turned on, it changes electrical energy into ______ energy. A. motion * B. magnetic C. gravitational D. electromagnet 5. An experiment discovered that a particular material was a poor conductor of electricity. This material would most ...

**Math**

Solve each of these systems using the substitution method. Make sure to check your answers ! 2x + 3y = -4 x - 2y = 5 Question 1 answers x = 1, y = -2 x = -1, y = 2 x = 1, y = 2 x = -2, y = -1

**Math**

How to check 4=-2(4.5p+25) so the answers both check out and equal each other?

**business**

can you please check my answers to the questions i realy need to check them if they right or wrong

**vocab**

improving vocabulary skills textbook chapter 7 sentence check 2 and final check answers

**college math**

Use sets to verify the following answers a. 4+5=9 B. 0+6=6 C. 10+2+12 I want to know if I'm doing this right. please check my answers. I'm confused on how to do this but I'm giving it a shot. A. a+b=c b. 0+2=a C. 5+5+2=12

**To Ron: Chemistry 12**

I've deleted your 14 chemistry questions because you've made no attempt at answering them. This is not a site to dump homework questions like so much garbage to be disposed of. If you'd like to repost any of them with your answers, someone may be able to check them.

**English**

What are four things to look for when proofreading? My answers: Reading, grammar check, spelling check, and punctuation.

**Math check my answers**

1. Evaluate. 8d - 10 for d = 4 A.32 B.22*** C.26 D.46 2. write an algebraic expression for the sum of 3 coins and c coins. A.c + 3*** B.c/3 C.3c D.c-3 3. Find the solution of the equation from the given numbers. x - 2 =16: 14, 18, 21, or 12 A.12 B.14 C.18*** D.21 4.use mental ...

**ALGEBRA**

I NEED SOMEONE TO CHECK THESE PLEASE!!! IF B IS REPLACED WITH A NUMBER THAT SHOWS THE RELATIONSHIP INDICATED IN THE TABLE, ARE THESE ANSWERS CORRECT? Y = -X + B X Y 1 0 2 -1 8 -7 10 ? 20 ? 40 ? SO, y=-1+1=0....y=-2+1=-1.......y=-8+1=-7........y=-10+-3=-13...y=-20+1=19.....y=-...

**math**

How would I come about to the solution and what the answers to the question so I can help my son with his school work? 1.Check all the answers that are square roots of 36 a. 36^1/2 b.-(36)^1/2 c.9 d.6 e.-6 f. √36 2.)Which answers are equal to the expression 2 x √9 ...

**Biology check my answers**

Please check to see if my answers are right: we need to list the 6 kingdoms with their characteristics and an example each Eubacteria -"true bacteria": bacilli Monera- prokaryote ,: Cyanobacteria Protista- single cell, true nucleus :amoeba Plantae- photosynthetic :roses Fungi...

**Algebra**

I have a few questions that I need help with. Solve the radical equation, and check all proposed solutions. 5. x- square root 3x-2=4 I don't understand this problem. Solve and check the equation. 10. (x^2+14x+49)^3/4-20=7 would I have to multiply each number by 4/3? Solve the ...

**Honors Chemistry (check answers)**

On a worksheet we got, we have to balance out chemical reaction equations then define what kind of reaction it is (synthesis, decomposition, single/double-replacement). Would someone be willing to check my answers, please? Thanks!! 1. c) BaO + H2O ==> ________ (synthesis...

**Calculus (pleas help I really need to check this)**

Assume that each of the follwing functions gives the position of an object at time t. Find the velocities indicated by setting up and evaluating a limt algebraically. (a) s(t) = 3t^2, Find v(-1). (b) s(t) = 1/t , Find v(2). (c) s(t) = square root of t, Find v(1). The answers ...

**vocab (english)**

i have improving vocabulary skills 4th edition book and i need sentence check 2 answers and final check

**Pre-Calculus-check answers**

Which of the following results in the graph of f(x)=x^2 being expanded vertically by a factor of 3 and reflected over the x-axis? a) f(x)= (1/3)x^2 b) f(x)= -3x^2 c) f(x)= (-1/x^2)+3 d) f(x)=(-1/3)x^2 Answer: d Thanks for checking my answers

**Algebra**

I was wondering if someone could check over these answers for me. Find the slope between the set of given points: a) (3,-6) & (-2,-7)=2.6 b) (7,5) & (7,-4) = -9 c) (0,-5) & (16,-5)= 16 I just wondered if the answers I have are right.

**Math (Check 2 answers please)**

1. What is the value of b in the equation b + 8 = 13? A. 5**** B. 8 C. 13 D. 21 2. The steps below show the incomplete solution to find the value of x for the equation 7x − 3x − 4 = −1 + 21: Step 1: 7x − 3x − 4 = −1 + 21 Step 2: 7x − 3x − 4 = 20 Step 3: 4x − ...

**calculus**

Find the distance from (3,7,-5) to each of the following. a. the xy-plane b. the yz-plane c. the xz-plane d. the x-axis e. the y-axis f. the z-axis **I just wanna check my answers because I didn't really understand it when the teacher was explaining it and it's an even ...

**other Quadratic equations**

The problem is 7x^3-x+1=x^3+3x^2+x. Find all real answers. I came upwith two answers 3x^2=1 and 2x=1/2. The first answer just does not look right. I must be forgeting something! You can check them by putting in x=1/4 (the second answer), and then x=+- sqrt(1/3) These are three...

**Chemistry**

I just need someone to check my answers please :) On the pH scale are the following items base, neutral, or acid? 1. Hand Soap 2. Blood 3. Milk 4. Coffee 5. Orange Juice 6. Soda Pop 7. Vomit 8. Battery Acid My answers: 1. Base 2. Neutral 3. Neutral 4. Neutral 5. Base 6. Acid 7...

**Math PLEASE HELP**

Please finish these questions so I can check my answers. All my answers are at the bottom. Adding and subtracting mixed numbers. Please finish these questions. The answer must be reduced to lowest terms! 1. 3 2/5 + 6 1/5= 2. 4 2/5 + 1/10= 3. 2 3/12 + 2 3/6= 4. 5 3/9 + 2 1/3= 5...

**CHEMISTRY**

This is regarding to the super long post. Dr.Bob, did you actually check all of my answers? Do you want me to make several small posts now? By the way I don't understand how #1 is wrong!!!!!

**Math check my answers**

I posted this before can someone please check my answers and help me thanks:) 2 rectangles have equal areas determine the area of each rectangle then use this info to determine the perimeter. rectangle one: length of 2p + 3 width of 3.8 after my work i got p= 1.5 so the area ...

**Math**

Check my answers please. 1)Which statement is an example of the Identity Property of Multiplication? a)8 • 0 = 0 b)8 • 1 = 8<<<< c)8 • –1 = –8 d)–8 • –1 = 8 2)Whats another way to write -3*(4+7)? a)-3*4+7<<<<< b)-3*4*7 c)-3*4+4*7 d)-3...

**Algebra II**

Solve x^4 - 12x - 5 = 0 given that -1 + 2i is a root. I’ve used synthetic division to get the answers x = 1 +/- 2i , 1 +/- sqrt 2 I’ve having trouble checking the answers though because of that imaginary number. How can I check these kind of problems?

**To SquadHunter**

I banned you from posting here until about noon tomorrow. In the meantime, I suggest you try to find the answers to the many questions you posted. Post your answers and I'll be glad to check them. We will not do your homework for you!!!

**Chemistry - check answers**

Can someone please check my answers and make sure they're correct? A) How much heat would it take to raise the temperature of 46.0 g of water from 90.0 to 100.0 C? Answer using correct sig figs, sign, and units. My answer: +1.92x10^3 J B) How many joules are released when 84.0...

**Health; Check Answers**

Please check my Answers 1. Which is a common viral disease? A. strep throat B. lyme C. tuberculosis D. common cold*** 2. which statement is about the flu? A. there is no cure B. there is usually a fever C. It typically lasts 3-7 days D. it spread by contact with infected ...

**@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.

**Chemistry Check**

A compound that contains only Fe and O is 69.9% Fe by mass. What is the empirical formula of theis compound? Attempt: 69.9g(1/56): 1 30.1g(1/16): 2 I got FeO2 but the answers say that it is Fe2O3

**Mathematics **

I need help with this quiz, if anyone knows the answers, I will be most happy. The quiz I am on is Unit 5: Lesson 6: Graphing Linear Functions. I have my answers and Mr. Steve PLEASE check them for me, thank you! 1. B 2. A 3. B 4. B 5. A 6. A 7. C 8. C

**Calculus - please check my work**

Differentiate each function a) y = -3x^2 + 5x - 4 b) f(x) = 6/x - 3/(x^2) c) f(x) = (3x^2 - 4x)(x^3 + 1) the answers i got for each was: a) y'= -6x + 5 b) f'(x)= -6/x^2 + 6/x^3 c) f'(x)= 15x^4 + 6x - 16x^3 - 4 please double check and let me know if these are correct, thank you.

**Chemistry(Please check)**

Classify the following functional groups: 1)CH3CH = CH2 I think this is an alkene 2) CH3CHCH3 I think it is an alcohol. ! OH Would you agree with my answers?

**math 1st grade can you check the answers**

can you check this set of answer {10,14,18,22,26} mean=18 median=18 mode =no mode

**Chemistry (please check)**

1)Which of the following compounds has the largest lattice energy: LiF LiCl NaF NaCl 2)Which of the following compounds has the most ionic character in its bonding: CaBr2 GeBr4 KBr GaBr3 3)Using the electronegativity table on page 364 of your text, which end of the B-N bond is...

**MATH: Check my answers | HELP ASAP!!**

What is the diameter of a circle with a circumference of 282.6 m? Round your answer to the nearest meter. 4.5 m 9 m 90 m##### 45 m Check my answer please.

**Math check**

The middle 69% of a normally distributed population lies between what two standard scores? (Give your answers correct to two decimal places.)0.31 and 1.69 was my answers and they are wrong????. .

**French(easy question)**

Translate all this french into english. I did all of it at the bottom. Please do it as well so I can check my answers. Check my answers as well. Thanks. On passe un bon film au Gaumont. On y va? Pas possible. J'etudie pour l'interro, demain. D'accord. Alors, a demain. My ...

**@ Helps meas pleases**

Your previous post was deleted because it had lots of questions -- but no answers. Please repost no more than five of those questions along with your answers. I'll be glad to check them.

**socialstudies(CHECK ANSWERS)**

modern mexico check answers 7. Which of the following was largely responsible for the Mexican Revolution? A. separation from Spain B. the overthrow of Maximillian(I PICK THIS) C. widespread poverty D. lack of women's rights 9.Why did the Mexican Revolution most likely happen ...

**Chemistry**

Are the following compounds or mixtures? Please help to check the answers. 1) starch - compound 2) chalk - compound 3) coal - mixture 4) drain water -compound

**chemistry check if my answers are right. drbobzz**

Acetylene gas(c2h2) is used in welding. During one job a welder burns 48.0 g of acetylene. Using a balanced equation for the complete combustion of acetylene calculate the following. Equation 2C2H2 + 5O2 ---> 4CO2 + 2H2O A) the mass of oxygen used B) the mass of carbon ...

**Accounting**

A check returned by a bank because the issuer's cash account balance could not cover the check is called a(n): a. Cancelled check b. Certified check c. Outstanding check d. NSF check

**Math please check my answers**

Decide whether the lines in each pair are parallel , perpendicular, or neither. Justify your answers: A.) m=3/4 m=12/16 B.) m=100 m=0.01 C.) m=10 m= -0.1 My answers: A.) parallel because they both equal to 0.75 B.) neither because they aren't the same and aren't negative ...

**Algebra Please check answers**

Could you please check these answers thanks. Directions: Factor each polynomial. If the polynomial cannot be factored, write prime. 1. a^2-16b Answer: (a-16)(a+16) 2. m^2+8m+16 Answer: (m+8)^2 3. 3a^2b+6ab+9ab^2 Answer: Prime 4. 2r^2+3r+1 Answer: Prime 5. z3+6z^2+9z Answer: Prime

**7th grade math check**

Ok I was wondering if you could check these 3 problems please. I am suppose to set these equations equal but I am not sure if did them right. I think I accidently solved these systems as substitutions. The answers are suppose to be in coordinate pairs. 1) x - y = 11 -3x + y...

**Math- check my answers**

Decide whether the lines in each pair are parallel , perpendicular, or neither. Justify your answers: A.) m=3/4 m=12/16 B.) m=100 m=0.01 C.) m=10 m= -0.1 My answers: A.) parallel because they both equal to 0.75 B.) neither because they aren't the same and aren't negative ...

**Please check-Reiny**

Could you check these two problems? 3sqrt (y+2) = 3 is y = 25 Answers were: true or false I said true because I did it like this Square both sides=y + 2 = 3^3 y+2 = 27 y = 25 and sqrt (2y-6) = 3-y for y answes are: no solution 5 3,5 3 I said 3 because I did it like this: 8y -...

**math(check answers please)**

please check my math answers again thanks. by the age of 27,justin had visited 25 out of the 50 states.what fraction of the states had justin visited?write the answer in simplest form. A.2/1 B.25/50 C.1/2(I PICKED THIS) D.1/3 Heather drove 10 miles in 22 minutes.which is the ...

**Algebra (check my answers)**

Please check these answers. Multiply -7(2a2 -4) = -14a2 + 28 Multiply 0.5(a + b -5) = 0.5a + 0.5b - 2.5 Factor bx - by + bz = b(x - y + z) Combine like terms (simplify) 12x + 4 - 11y - 6x - 9 - y = 6x - 12y - 5 Evaluate the expression 3x2y when x = 3 and y = 5 Answer: 135 ...

**Math 8R - HW Qs. Check**

Topic - Logic In the clues below, each variable represent a different digit ranging from 0-9. Determine what digit each variable represent g+g+g = d (3+3+3 = 9) j+e = j (2+0 = 2) g (to the 3rd power) = d (3, to the 2nd power = 9) b+9 = d (6+3 = 9) f-b = c (7-6 = 1) i+h = a ...

**Health Check answers plz**

Can someone check my answers? 1. Obesity is the condition of being significantly overweight. A. True**** B. False 2. Obesity is body weight that is normal for that particular age, sex and height. A. True B. False**** 3. The number of children in the United States who are obese...

**Math**

I cannot come up with the right answers for my matrix. I need to write as a system of equation and solve the system. 1 2 3 x 1 1 1 1 y = 12 -1 1 2 z 2 The answers I come up with are 31 15 15 when I check these, they will not work, what I am doing wrong?

**To Brady, please check**

Please check my answers down below.

**Math (URGENT)**

Use calculator - answer correct to 3 places. a. 3sqrt17 + 2sqrt15 / 5sqrt7 = 10.644 b. 2sqrt11 - 3sqrt2 + 15sqrt10 + 5sqrt5 = 61.005 c. 4.3sqrt6.9 / 1.7sqrt57 = 50.163 Can someone check my answers? I keep getting the feeling these are not the right answers. Thank you.

**Hector >> history**

I've deleted your 28-question test. You posted no answers, and we HELP with HOMEWORK. We do not answer test questions. If you post two or three of the questions and your answers, we'll be glad to check them for you.

**To Linda >> Microeconomics**

Linda, I've deleted your 15 multiple choice questions because you did not tell us what your answers are. If you repost your questions and your answers, someone may be able to check them for you. Jiskha tutors do not do homework or tests.