# answer

59,787 results

**8th Grade Algebra: Answer Check**

Find the length of the 3rd side of each right triangle. 1. 8^2+15^2=c^2 Answer: c=17 2. 5^2+b^2=13^2 Answer: b=12 3. 9^2+13^2=c^2 Answer: c~15.81 Simplify. Assume that all variables are nonnegative. { this means square root 4. {12 Answer: 2{3 5. 2{75 Answer: 10{3 6. -3{72 ...

**8th Grade Algebra: Answer Check #2**

Add or Subtract (Radicals) { this means squared 1.3{2 + 4{2 Answer: 7{2 2. 8{3 + 3{3 Answer: 11{3 3. 7{5 - 3{5 Answer: 4{5 4. 8{2 - 5{2 Answer: 3{2 5. 6{x + 7{x Answer: 13{x 6. 9{y + 3{y Answer: 12{y Multiply 7. -3x^2(4x^2-3x-5) Answer: 12x^2 8.(3b+5)(b-3) Answer: 3b^2-4b-15 9...

**8th Grade Algebra-Radicals:Answer Check**

Write each expression in simplest form. ( means square root 4. 3(11 + 4(11 Answer: 8(11 7. 7(2 - 2(8 Answer: 1(2 ?? 8. (48 + (75 Answer: 9(3 9.(3(10) Answer: 19 + 6ã10 10. (27/64 (Fractions) Answer: 3(3/8 ?? 11. 10(20 - 3(80 Answer: 10(5 12. (6/49 (Fractions) ...

**algebra**

Solve the given equations: 1. |2x-5|= 29 Answer: x=17 or is it........ x=-12 2. 5(x+3)-2x = -21 Answer: x=-12 3. 3x+3(1-x)= x-17 Answer: x=20 4. 2[1-3(x+2)] = -x Answer: x= -2 Factor Completely: 1. x^2-12x+20 Answer: (x-2)(x-10) 2. x^2-x-20 Answer: (x-5)(x+4) 3. x^2-49 Answer...

**Pre-Calculus**

Could someone check my answers? 25. 32^(2x-3)=2 Answer- x= 8/5 26. 9^(2x+1)=81 Answer- x= 1/2 27. 1/4=2^3x Answer- x= -2/3 28. 1/27=3^2x Answer- x= -3/2 29. 9^x=27 Answer- x= 3/2 30. 32^x=4 Answer- x= 2/5 31. 27^(x+1)=9 Answer- x= 1/2 32. 125^(x-2)=25 Answer- x= 7/2 33. 81^(x-...

**Math 8R: Homework Check - Part 2**

Part 2: Simplify by combining like terms and using the distributive property 11. 3x + 5x Answer: 8x 12. 3x + 5y - 2x + 8, Answer: 1x + 5y + 8 13. 9 + 5m + 6b - 2m - 4, Answer: 3m + 5 + 6b 14. 3ab + 6c - ab + 10 - 2c, Answer: 2ab + 4c + 10 15. 6(m+3), Answer: 6m + 18 16. 8(x-2...

**8th Grade Algebra-Radicals:Answer Check**

Change each decimal to a fraction in lowest terms. 1) 0.4242.... Answer: 14/33 2)0.58 Answer: 29/50 3)0.14 (Repeating sign over both numbers) Answer: 14/99 Write each expression in simplest form. ( means that it is inside a square root. 1. (54 Answer: 3(6 2. (98 Answer:(14*(7 ...

**Math**

Round each decimal number to the nearest hundredth. 1. 8.456 answer 8.460 2. 3.262 answer 3.260 3. 8.902 answer 8.900 4. 6.551 answer 6.550 5. 7.843 answer 7.840 6. 9.479 answer 9.480 7. 12.007 answer 12.010 8. 10.502 answer 10.500 9. 0.052 answer 0.050 10. 5.607 answer 5.610 ...

**Basic programming principles**

What would be the answer of the following: (only type in your answer at the answer space provided) Result a = 5 b = 7 Answer = 15 Do while answer <= 47 Answer = answer + a – b a = a + 6 b = b – 1 loop end

**8th Grade Algebra-Radicals:Answer Check**

4. 3ã11 + 4ã11 Answer: 8ã11 7. 7ã2 - 2ã8 Answer: 1ã2 ?? 8. ã48 + ã75 Answer: 9ã3 9.(3ã10) Answer: 19 + 6ã10 10. ã27/64 (Fractions) Answer 3ã3/8 ?? 11. 10ã20 - 3ã80 Answer: 10ã5 12. ã6/49 Fractions) Answer: ã6/7 ?? 13. 3ã...

**Algebra**

1) Simplify: (Y^4) (y^3) A:y^1 B:y^7 (my answer) C:y^12 D:y^43 2)Simplify: Y^6 / y^2 A: y^8 B: y^4 C: y^3 ( my answer) D: y^1 3: Convert into a fraction 5-^3 A: 1/5 B:1/15 (my answer) C:1/25 D:1/125 4: 15^0=? A:0 (my answer) B:1 C:15 D:1/15 5: Select all the expressions that ...

**Math**

Combine like terms to simplify the expression. 1/_4+6+9y= Answer: 5y+6 2/ 20a+7+3= Answer: 20+10 3/_5k+9_2+9k= Answer: 4k+7 4/ 17+2.9h+3= Answer: 30+14 Simplify the expression. 5/ _4(3+d)+7d_d= Answer: _16+6d 6/ 8+5(j_5)+3j_1= Answer: 32+8j_1 7/ 9(b_3)+4(b_5)= Answer: 5b+22 8...

**maths**

1. Q: 2|3x-5| when x=(-3) A: 24 2. Q: |6-x|+4 when x=5 A: 5 _______________ Simplify the expression. 1. (-4)(-x)(x^2) my answer: 4x^3 2. (24)(-5x)(-x) my answer: 120x^2 3. -x(4-x) my answer: -4x-x 4. -4t(t+2) my answer: -4t^2+(-6t) 5. b^2(4-b^2) my answer: 4b^2-b^4 6. (c+3c^2...

**Physics Help**

State the number of significant figures. 1) 809 Answer : 3 2) 0.0060 Answer : 5? 3) 0.00000095 Answer : 9? 4) 5.60 Answer : 3 5) 5.743 Answer : 4 6) 0.010 Answer : 4?

**Matt 115**

Hello, I just wanted to know if someone could check my work to see if they are right or wrong. Thanks :) 5. Find 2/5 of 4/11. Answer: 8/55 8. Are 3/21 and 3/54 equivalent fractions? Answer: No 14. Write in decimal form 8 583/10,000 Answer: 8.0583 22. Solve for the unknown: 8/...

**Algebra**

Can someone check my algebra answers and help me with the problems I don't understand? 1. n^2-n-20/2n^2 times n^2+5n/n^2-25 answer: n+4/2n 2. (2x-6/21)/(5x-15/12) answer: 8/35 3. 5x-3/6 - x+3/6 answer: 2x/3-1 4. 5x/26 - 2x/13 answer: 1x/26 5. 3x^2/9x^5 answer: 1/3x^3 6. (x^2+...

**Math**

Please double check Real Numbers and Order |4| + |3| Answer: 7 |-9| - |4| Answer: 5 Adding Real Numbers 7+ (-9) + (-5) + 6 Answer: 17 |-27 + 14| Answer: 13 Subtracting Real Numbers –1/2 – (-5/8) Answer: 2 –3.4 – (-7.6) Answer: -4.2 –54 – 119 Answer: 65 Multiplying ...

**Math**

Please double check me Dividing Real Numbers (-9)(5)/3 Answer: 15 4 – (-3) +1 / 2 –2 / (-2) Answer: 2 16 / (-2) * (-4) / 2 3power + 4 Answer: 6 Subtracting Real Numbers –1/2 – (-5/8) Answer: 2 –3.4 – (-7.6) Answer: -4.2 –54 – 119 Answer: 65 Adding Real Numbers ...

**8th Grade Algebra-Answer Check**

Write each decimal as a fraction in lowest terms. 1. 0.111... Answer: 1/9 2. 0.02 Answer: 1/50 3. 0.7272... Answer: 8/11 4. 0.012012... Answer: 4/333 ?? 5. 0.66666.... Answer: 2/3 6. 0.396 (reapeating sign over all numbers) Answer: 44/111 ??? If I got any of these wrong, can ...

**math**

Please check. (-6m^2n+3mn^2-5mn+2)+(4m^2n+2mn^2-6mn-9) Answer: -2m^2n+5mn^2-11mn-7 (2x^4-3x^2+7x)-(5x^3+2x^2-3x+5) Answer: 2x^4-5x^3-5x^2+10x-5 (a-8)(a-1) Answer: a^2-9a+8 (z+6)^2 Answer: z^2+12z+36 (5x+2y)^2 Answer: 25x^2+20xy+4y^2 Is that order okay? Does it matter? (2x-7)(...

**math**

Please check. (-6m^2n+3mn^2-5mn+2)+(4m^2n+2mn^2-6mn-9) Answer: -2m^2n+5mn^2-11mn-7 (2x^4-3x^2+7x)-(5x^3+2x^2-3x+5) Answer: 2x^4-5x^3-5x^2+10x-5 (a-8)(a-1) Answer: a^2-9a+8 (z+6)^2 Answer: z^2+12z+36 (5x+2y)^2 Answer: 25x^2+20xy+4y^2 Is that order okay? Does it matter? (2x-7)(...

**math**

Hi I need help with 5 questions..some of it is confusing to me. I just want to make sure my answers are right. 1.6^-7 x 6^4 6^-3 ; 6^-11 ; 6^-28 ; 6^11 - my answer is 6^-3 2. 7/ 7^5 = 7^-2 (supposed to find the missing value which is the other exponent on top of the 7 that's ...

**rounding to sig figs**

round the following to THREE significant figures: i tried some of them...please check to see if i did them right...thank you a) 356,309 a. Answer: 356,000 b) 0.05738949 a. Answer: 0.0574 c) 0.05999999 a. Answer: 0.0510 d) 583,689 a. Answer: 584,000 e) 3,556 a. Answer: 3,560 f...

**Reiny or Steve could you check my Math?**

1. (9m+6)+(-5m-6) my answer: 4m 2. (3r^2+7r+1)+(4r^2-8r-2) my answer: 7r^2-r-1 3. (6h-1)-(9h+4) my answer: -3h-3 4. (m^2-m-4)+(m-5) my answer: m^2-9 5. (4x+4)+(3x+2+1) my answer: 7x+7 Now this was book work for me so it doesn't have multiple choice, so are my answers correct?

**algebra**

Need some one check my homework. Evaluate 3p/q when p=2 and q=6. Answer:1 Use < > or = for __ to write a true sentence: 0.001 __ 0.0010 Answer:< Question 3 Evaluate -3/8 - 5/8. Answer:7 Question 4 Evaluate: 84 + (-99) + 44 - (-18) - 43 = Answer:4 Question 5 Multiply...

**5th grade Math**

Having problems with less than/greater than decimals. Wanted to double check some answers. a)0.5_1.0 My Answer is < b)3.2_3.02 My answer > c)4.83_4.8 My answer < d)6.25_6.4 My answer < e)0.7_0.07 My Answer >

**cal**

1. Given the function f(x) and g(x) below determine the following: A) f o g(3) ANSWER: B) f o g(-4) ANSWER: C) g o f(0) ANSWER: D) f o f(1) ANSWER: E) g o g(-2) ANSWER:

**Algebra**

Hiya. I have 7 expressions that I have been asked to simplify. I worked all of them out, and if you could, I'd like you to check my work for me. Here they are: 1. (x^2 + 3x - 9) + (-4x^2 + 2x - 3) My answer: -4x^4 + 5x - 12 2. (x - 2)(3x + 5) My answer: 3x^2 - 30x - 10 3. (r...

**algebra**

Factor completely with respect to the integers. I just need to see if I can simplify or factor the answers I got even further. 1. x^3 + 64 Answer: (x+4)(x^2-4x+16) Can this simplify any? 2. 8x^3 - 64 Answer 8(x-2)(x^2+2x+4) 3. x^-2x^2+4x-8 Answer: (x^2+4)(x-2) 4. 2x^3 + 3x^2...

**check math**

Here are my answers. Can you check if I got the right answers? Thank you! (x+3)(x-3)>0 answer: x<-3 or x>3 x^2-2x-15</=0 answer: -3</=x</=5 12x^2=3x answer: x=1/4 sin2x=sinx, 0</=x</=2pi answer: x=pi lx-3l<7 answer: (-oo,oo) (x+1)^2(x-2)+(x+1)(x-2)^2...

**Algebra Please Check answers**

Directions: Determine whether each trinomial is a perfect square. If so, factor it. 2. 4a^2+4a+1 Answer: 2(a+1)^2 3. 9m^2+15m+25 Answer: no 4. d^2-22d+121 Answer: (d-11)^2 Directions: Determine whether each binomial is the difference of squares. If so, factor it. 5. x^2-16 ...

**French**

Could you please check my answers thank you so much. Directions: Tell whether each item is either casual or formal. Using sport and habillé 1. Des baskets Answer: sport 2. Un tailleur Answer: habillé 3. Un jean Answer: sport 4. Un complet Answer: habillé 5. Une blouson ...

**Math - Check My Answers**

Please help me with the following(there is 9 problems so be prepared): 1.2^(1/3)∙4^(1/3) I think it is 4 for the answer. 2. 11^(1/2)∙11^(1/2) I think it is 11 for the answer. 3. 2^(1/2)∙2^(1/2) I think it is 2 for the answer. 4. 3^(1/3)∙9^(1/3) I think ...

**Algebra**

Write y = -2/5x + 3 in standard form using integers. A)2x+5y=-15 B)2x-5y=15 C)2x+5y=3 D)2x-5y=3 I don't agree with any of these answer choices. I cam up with this answer; 2x+5y=15, but it is not one of the answer choices. Is my answer wrong? If so, what's the right answer? ...

**Math**

Confused on these but these are my answers. *Not multiple choice* 1) -18 + 4 + x = 9 - 19 *my answer is -10* 2) 32 - 6x + 7x = -15 + 28 *my answer is 13* 3) -4x + 5(x -2) = -16 + 10 *my answer 4* 4) 4.8 + x -5.9 = 3.6 * my answer 4.7* 5) 1/3x + 1/3 (2x - 15) = 3 1/2 * my ...

**Physics - Significant figures**

State the number of significant figures. 1) 809 Answer : 3 2) 0.0060 Answer : 5? 3) 0.00000095 Answer : 9? 4) 5.60 Answer : 3 5) 5.743 Answer : 4 6) 0.010 Answer : 4?

**math check**

1. find the square root of 25 answer 5 2. find the median of the following set of numbers 33,72,23,27,77,68,85 answer 68 3. find the mean of the following numbers 13, 15,18,18,18,19,22,26,28,33 answer 21 4. find the mode 15,14,10,15,,16 answer 15 5. the total budget of a ...

**Math**

Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y. x 7 7 5 5 7 y 95 90 75 85 95 (a) Complete the preliminary calculations: SS(x), SS(y), and SS(xy). Incorrect: Your answer is incorrect. . (SS(x)) (my answer was 100.9...

**Math**

The scale on a map is 1 in: 4 miles. Find the actual distance in miles for each length on the map. 1/ 2 in. Answer: d=8 2/ 7.2 in. Answer: d=288 3/ 3.5 in. Answer: d=140 4/ 11 in. Answer: 44 Write the ratio as a scale in simplest form. 3cm\15cm Answer: 1/5 or 1:5 71/5 in./30 ...

**ELA**

Complete the exericse with basic words.Add ion to each verb to make a basic word protect answer: protection confess answer: confession imitate answer: imitation impress answer: impression express answer: expression

**PLEASE HELP ME! PLEASE!**

1 )3x + 8y = 1 7x + 4y = 17 Answer: (3,1) 2) -3x + 5y = -7 9x + 2y = 38 Answer: (4,1) 3) 7r + 3s = 13 14r - 15s = -16 Answer: (1,2) 4) 2x - 7y = 42 4x - 14y = 64 Answer: No Solution ?? 5) 9x + 12y = 15 3x + 4y = 5 Answer: Identity ?? 6) 2 = 4s - 3t 2 = 12s - 9t Answer: No ...

**French**

Bonjour! Could you please check these thank you very much!! Directions: Use the form of de la, du, des, or de l' and also le la or les. Oh, j' achète des carottes, (1)------ épinards, (2)------- haricots verts. (1)Answer: des (2)Answer: des Moi, je mange (1)-------- légumes...

**Algebra(check pt 3)**

1)The dimensions of ST. S[7/12 -1/9] [-1/3 1/9] T[4 -5 2] [8 -1 3] answer=2x3 2)The pair of matrices that are inverses. P[3 1] Q[4 4] R[0 -1/4] [-4 0] [12 21] [1 3/4] S[7/12 -1/9] T[4 -5 2] U[-9 6 4] [-1/3 1/9] [8 -1 3] [-5 -2 3] V[3 1] [0 2] [-4 5] answer=S and R 3)Find the ...

**Math (Algebra)**

How do you simplify the following fraction; 72 --- -68 I know the answer is -18 --- -17 What I do not know is how this is the answer.The example I looked at did not tell me how it came to the answer. What do I do to find the answer?

**Algebra(Check Please?)9nth Grade**

3.) 3x + y = -8 My answer: Y=-8 + -3x 4.)2x - y = 11 My Answer: y=2x + -11 5.) 4x + -8y = 24 My answer: y = 32x + -192 6.) 15x + 10 = -14 - 9x My answer: NEED HELP WITH THIS ONE.

**maths, algebra**

State the degree of each of the following: a)3 b)x^0 My answer for a) was: 1 My answer for b) was: 1 BUT at the back of the book, the answer for a) was 0. The answer for b) was also 0. I just don't understand why I'm wrong.

**ALGEBRA! URGENT. Check Answers!**

1. 18x^2 + 6 + 4x - 15x^2 - 4 + 13x Answer: 3x^2 + 17x + 2 2. 3x^2 + 6 - 2x + 5x - 4x^2 + 9 Answer: -x^2 + 3x + 15 3. 3x^2 + 5x - 7x + 3 - 5x^2 + 2 Answer: -2x^2 + 2x + 5 4. In the expression -7x - 3x^2 + 5. What is the coefficient of x? Answer: I think it's 7 or -7 Thanks!

**Math 8R: Homework Check - Part 4**

Part 4: Translate and solve: 25. 6 less than twice a number is ten Answer : 2n - 6 = 10 (answer: n = 8) 26. The quotient of a number and 4 plus 3 is 8 Answer: n/4 + 3 = 8 (answer: n = 29) 27. 4 less than three times a number is -28 Answer: 3n - 4 = -28 (answer: n = -8) 28. ...

**math**

My homework tells me to divide the answer ,add the answer, and find the mixed fraction in the answer, but they don't tell me where I get the answer . What do I do? Surely there is more info. If not, you can't do it.

**Algebra 1 (Reiny)**

1Simplify the quotient (6.4 x 10^9) / (1.6 x 10^-3). Write the answer in scientific notation. My answer: 4 x 10^6? Simplify. 2. a^16/a^4 My answer: a^12? 3. (4y^6/x^3)^2 My answer: b^15/8?

**8th Grade Algebra- Answer Check**

Solve each system of equations, give the solution and state whether there are no solutions or many solutions. 1 )3x + 8y = 1 7x + 4y = 17 Answer: (3,1) 2) -3x + 5y = -7 9x + 2y = 38 Answer: (4,1) 3) 7r + 3s = 13 14r - 15s = -16 Answer: (1,2) 4) 2x - 7y = 42 4x - 14y = 64 ...

**French**

Could you please check these thanks. Directions: Use with only the d form(de la, de l' des, or du) Au marché, Jean-Marc achète (1)------- pain, (2)------- jambon, (3) ------- fromage, (4)-------- fraises et (5)------- crème. Il va préparer (6)------ sandwichs au jambon et ...

**Grammar (Last one :) )**

Except for Ronnie and _____, everyone was on time. him(my answer) he Between you and _____, I know the answer to the mystery. I me(my answer) Leave your message with Ms. Horioka and _____. me(my answer) I It was Geraldine Ferraro _______ ran for vice president in 1984. who(my ...

**Algebra**

Please confirm if I did the follow problems correctly: A) Find the sum or difference. (5a – 3b) + (2a + 6b)= 7a + 9b Answer: = 7a + 9b B) Let’s work a few of these (FOIL) 1) (x+2) (x+8) = x 10 Answer: x10 2.) (x+5) (x-7) = x + 11 Answer: x + 11 3.) (2x+4) (2x-3) = 4x + 7 ...

**Algrebra**

Please confirm if I did the follow problems correctly: A) Find the sum or difference. (5a – 3b) + (2a + 6b)= 7a + 9b Answer: = 7a + 9b B) Let’s work a few of these (FOIL) 1) (x+2) (x+8) = x 10 Answer: x10 2.) (x+5) (x-7) = x + 11 Answer: x + 11 3.) (2x+4) (2x-3) = 4x + 7 ...

**math**

This is for Ms. Sue ! 0.002,1/4,0.20,1/5 my answer 1/5 and 0.20 7/20,6/20,3.5,0.35 my answer 3.5 0.008,0.08,2/25,1/12 my answer 0.08 14%,1/8 , 0.065, 0.03 0.065, 0.03,1/8 , 14% 0.03, 0.065, 1/8 , 14%, my answer C 0.03, 0.065, 14%, 1/8 7/14,2/5 , 32%, 0.25 7/14, 0.25, 32%, 2/5 ...

**chemistry (WEBWORK)**

Use the labels (CV+, –OH, CVOH, , Ea (activation energy), & G) to complete the reaction potential energy profile below. More than one answer is possible for some spots. a. (Use i, ii, iv, etc. for your answer) b. (Use i, ii, iv, etc. for your answer) c. (Use i, ii, iv, etc. ...

**ALGEBRA PLS HELP**

CAN YOU CHECK IF IM RIGHT? |-2 +5 | ANSWER 7 |5| +4 ANSWER: 9 |-5| +4 ANSWER : 9 |5+2| ANSWER : 7 |3-7| ANSWER : -4

**Algebra**

I need to test the integral bounds for the roots. 6x^3-7x^2+7x+9=0 I used synthetic division to find my answer. 1 6 -7 7 9 6 -1 6 6 -1 6 15 0 6 -7 7 9 0 0 0 6 -7 7 9 -1 6 -7 7 9 -6 13 20 6 -13 20 29 2 6 -7 7 9 12 10 34 6 5 17 43 my answer: -1<x<1 I don't understand why ...

**Algebra 2/Math**

Can you check these thanks. Solve the system by substitution or elimination. 2x+y=1 3x-y=14 Answer: (3,5) x-3y= -12 2x + 11y= -7 Answer: (39,17) 4x+2y=8 12x+6y=24 Answer: no solution 4x-2y=5 2x-y= -1 Answer: no solution 4a+3b =6 8a-b= -9 Answer: no solution

**Algebra 1 Answer Check**

1. Simplify 49^3/2. My answer: 343? 2. Simplify 5^ãx^25y^125. My answer: x^5y^25? 3. When the polynomial 5x - 2x + 8x^2 - 7 is written in standard form, what is the leading coefficient? My answer: -2? 4. Classify the polynomial 5x^2 + 9x + 1 according to tis degree and ...

**Algebra 1**

Can someone please check my answers? Thank You 1) Find an equivalent expression without parenthesis -(y+87) Answer: -y-87 3) Solve -3x-13x=96 answer: x= -6 4) Find the decimal notation 14/25 Answer: .56 5) Divide if possible 7/0 Answer:0 6) Solve 7x+10=52 Answer: x=6

**Algebra (check answers)**

Could you please check my answers we are using substitution to solve each system of equations. And at the end of every solution you are supposed to have an answer as a coordinate. 1. x=2y x+y=3 Answer (1,2) 2. 2y=3 x-y=10 Answer: (10,10) 3. y=x+7 x+2y= -21 Answer: (-3,-4) 4. ...

**Troy**

Can someone check my answers for the following problems. Simplify. Assume that no denominator equals 0. 1)(7x^2+3x-9)-(-x^2+8x-3) answer: 6x^2-5x-6 2) 5x^3(7x)^2 answer: 245x^5 3) (2x-3)^2 answer: 4x^2-9 4) Use synthetic division to find (2x^3-5x^2+7x-1)/(x-1) answer: 3 5)...

**Algebra 2 ..**

Solve the equation by completing the square. x^2-2=9x My answer: x=9/2+or- the sqrt. of 22.25 (but when I checked my answer the actual answer was x=9+or - the sqrt. of 89 and then all over 2) Please explain why my answer is different from the actual answer.

**algebra**

(y^2 - y + 2)/(y + 2) I put this in calc101 . com and I got an answer with y - 3 in the quotient and got 8 in thr remainder area. My answer key says the answer is y - 3 + 8/y + 2. Can someone explain how the answer key has this answer?

**Math**

1. 1-(-3) = A. -4 B. - 2 C.2 D. 4 (MY ANSWER) 2. -9 - 2 = A. -11 (MY ANSWER) B. -7 C. 7 D. 11 3. -9 - 2 A. -14 (MY ANSWER) B. -4 C.4 D. 14 4. -64 - (-83) = A. -147 B. - 19 C. 19 (MY ANSWER) D. 29 5. the balance listed on kims bank statement was $65 in April. in may, her ...

**language arts**

tell which letter is a correct answer to the questions. a question may have more than one right answer. Which of the following can be inflamed? a. a wound b. a menu c. an interrogation d. a congregation (I know for sure an answer is 'a' but I'm wondering if c and/or d is an ...

**Algebra**

Hi! I just want you to check if my answers are correct. Factor the expressions: 1. 15a^2(b-2)^2 + 20a^3(b-2)^3 = my answer is 5a^2(b-2)^2 [3 + 4a(b-2)] 2. 18p^2q^3 (r-6)+ 24(r-6) = my answer is 6(r-6)[3p^2q^3 + 4] 3. 24(x-y)^2 + 48(y-x) - 72(x-y)^3 = my answer is 24[(x-y)^2 + ...

**Math/Algebra**

Find each sum or difference (3x^2 + 7x- 2)+ (2x^2 - 3x + 4) Answer: 5x^2 + 4x + 2 (4x + 8y) + (-7y + 3x) Answer: 7x+1y (x^2 + 4x - 1)+ (9x^2 - 8x + 9) Answer: 10x^2 - 4x + 8 (8x + 6) - (2x - 1) Answer: 6x+ 11

**French**

Please check these: I don't know how to do some of the accents sorry:( Directions: Fill in the correct form of au, à la, à l', or aux 1. Elle prête la chaise ------ voisin. Answer: au 2. Ils sont ------ église. Answer: à l' 3. E(with an accent)Ecrivez- vous -------- garç...

**Math**

Could someone double check me Write the answer in lowest terms 5/9 + 8/9 = 13/18 What is the perimeter of a rectangle if the length is 7/11 ft and the width is 2/11ft? Answer: 9/11 ft Write the answer in lowest term 17/36 – 13/36 Answer: 1/9 8/15 + 3/20 Answer: 11/35 1 3/8...

**math check please**

1.Write 4x4x4x4x4 as a power of 4. Answer: 4^5 2. Evaluate. 72 divide 8-9 divide 3 Answer: 0 3. Give the place value for the indicated digit 8 in the number 138,350 Answer: Thousands 4. Fencing a rectangular field that measures 37 ft by 27 ft How much fence should i buy? ...

**Algebra 1**

1. Simplify the quotient (6.4 x 10^9) / (1.6 x 10^-3). Write the answer in scientific notation. My answer: 4 x 10^6? Simplify. 2. a^16/a^4 My answer: a^12? 3. (4y^6/x^3)^2 My answer: 16^12/x^6? 4. (2/b^5)^-3 My answer: b^15/8?

**Algebra 1**

1. Simplify 49^3/2. My answer: 343? 2. Simplify 5^ãx^25y^125. My answer: x^5y^25? 3. When the polynomial 5x - 2x + 8x^2 - 7 is written in standard form, what is the leading coefficient? My answer: -2? 4. Classify the polynomial 5x^2 + 9x + 1 according to tis degree and ...

**math.chem**

Give the answer to the following calculation with the correct number of significant digits. Report your answer in scientific notation. (6.17 x 10-1 + 4.9 x 10-2) x (3.95 x 10-2 + 6.454 x 10-3) i know the answer is 0.0306, but how many sigfigs should the final answer have? ...

**math**

What is the answer of X' cap Y What is the answer of Y' U Z' What is the answer of (X \ Z ) ' What is the answer of ( Y \ Z ) ' U X ' X={10 ,20 ,30 ,40 ,50} Y={30 ,50, 60, 90, 100} Z={40, 50, 60, 70, 80} U={200, 300}

**5th grade math**

I'm helping my daughter with her homework and I'm trying too see if we are doing it correctly it says round to the neared tenth of a square kilometer Problem- 296.37 Her answer was 296.47 km My answer - 300.00 km Problem: 0.44 km Her answer was 44km Problem 60.87 km Her answer...

**Physics - bobpursely**

State the number of significant figures. 1) 809 Answer : 3 2) 0.0060 Answer : 5? 3) 0.00000095 Answer : 9? 4) 5.60 Answer : 3 5) 5.743 Answer : 4 6) 0.010 Answer : 4? Physics Help - bobpursley, Sunday, September 11, 2011 at 4:59pm 2, 3, 6 are wrong: Zeroes to the left of ...

**French**

Could you check these answers also thanks so much and god bless. Directions: Indicate whether each item of clothing is for a man, woman, or for either. 1. un blouson Answer: Les deux 2. Un chemisier Answer: Les deux 3. Un pantalon Answer: Les deux 4. Une jupe plissée Answer: ...

**English**

Need to label the verb wish A for action of L for Linking... 1. The koala bears have climbed the tree. Answer=A 2. The peacock seemed more beautiful than before. Answer=A 3. In the rain forest display at the zoo, the birds looked stange and exotic. Answer=L 4. The goats in the...

**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 ...

**English**

Choose the contraction in parentheses ( ) that correctly completes the sentence . 1/ She (don't, doesn't) know what to expect in the United States . Answer: doesn't 2/ Fortunatley, her aunt and uncle ( haven't, didn't) forgotten to meet her plane. Answer: didn't 3/ ( Didn't, ...

**Precalculus**

Find the roots of the following quadratic equations by factoring. y=x^2+9x-36 I got (x+12)(x-3) but on the answer key it says that the answer is this, however it renames the x values with opposite values. For example, the answer on the review for it has my answer, but the ...

**French continued**

Could you please check these to thanks! Directions: Complete the names of these dishes you have for lunch using à, au, aux. 1. une soupe ------- oignon. Answer: à l' 2. un sandwich -------- jambon. Answer: au 3. un sandwich ------- fromage. Answer: au 4. une omelette...

**algebra 1**

select an appropriate unit from the choices below and connect the rate to that unit. answer a - ft /s answer b - mph answer c - mm/s answer d - km/s question : A car traveling at 36 ft/s

**math**

I have solved the following questions, let me know if they are correct, thanks. 1. Simplify, and write in the base of 3: (9^x . 3^4x)^2 answer: 3^12x 2. Differentiate and simplify a. y= 3x^4 - 4e^x + 8 answer: 4(3x^3 - e^x) b. y= (3 + 4e^x)^5 answer: 20e^x (3+ 4ex)^4 c. y= (e^...

**math-check**

I have solved the following questions, let me know if they are correct, thanks. 1. Simplify, and write in the base of 3: (9^x . 3^4x)^2 answer: 3^12x 2. Differentiate and simplify a. y= 3x^4 - 4e^x + 8 answer: 4(3x^3 - e^x) b. y= (3 + 4e^x)^5 answer: 20e^x (3+ 4ex)^4 c. y= (e^...

**math**

Solve each equation. What am I doing wrong because the answer is suppose to be 11/2 and I don't get the answer. Here's what I'm doing... Problem: 2x+1/4-3x-4/5=1/2 I get: 10x+5-12x-16=10 Which gives me -2x=21 My answer is -21/2 the correct answer is suppose to be 11/2

**calculus-answer check**

1. Determine the slope of the tangent to the graph of y=4/x at (1,4) my answer is -4 2.What is the slope of the line perpendicular to y=(x-2)/(x+2) at (2,0) my answer is -4 3. For which value of x is the derivative of f(x)=(x-1)^10(x+2)^5 equal to 0? my answer is 1

**Calculus**

This is a problem we did previously on a test; my answer was marked correct, but I am having trouble getting my answer in the same form that my teacher gave it. The question: Find the derivative of (x/(x+1))^1/2 His answer: ( (x(x+1))^(1/2) ) / (2x(x+1)^2) My answer: ((x+1)^(1...

**Grammar**

Choose the best answer: 1.The number of spurs ( 'is', 'are', 'am') not identifiable. Answer: are 2. One of the injection sites on the biceps ( seem, seems, seeming) inflamed. ANSWER: seems 3. Digital examination of the lungs ( reveals, reveal, revealing) consistent pink tissue...

**math check**

Peform each indicated operation and simplify. Can you please check my answers. Thank you. A)(x^2+2x-3)+ (2x^2-x+1) Answer: 3x^2+x-2 B) (-x^3+2x^2-5)+(x^2-x+6) Answer:-x^3+3x^2-x+1 C) (3y^2-x+7)-(y^2-2x+3) Answer:4y^2-3x+10 D)(2x^2-xy+y^2)-(-3x^2+xy+y^2) Can you help me with ...

**algebra 2**

I am taking an online class, and cant understand why when I calculate ona ti84 plus an answer I get decimal answer and my teachers answer is sq root, is there something I am not doing on my calculator? How do I convert. Example, teachers answer to the following was sin 315deg...

**Algebra word problem**

There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50 questions. What is the fewest number of questions a ...

**Algebra 2**

Can someone check my answers. Write the following equations in standard form. 1) x^2 - 2x + y^2 + 4y = 11 answer: (x-1)^2 + (y+2)^2 = 16 2) 4x^2 + 24x - y + 34 = 0 answer: y = 4(x-3)^2 + 2 3) The graph of which equation is a circle? A. 5x^2 + 10x = 9 + 5y^2 B. 5x^2 - 10x = 0...

**MATH**

there is a triangle with a base of 2.4 m and both sides are 1.7 m. it is a right triangle. what the heck is the answer? i have an answer sheet and i know the answer is 41 but how do you get that answer?

**Algebra II**

Please check answers: Use the equation of the exponential function whose graph passes through the points (0,-2) and (2,-50) to find the value of y when x= -2. My answer: -2/25 Solve 64^x<32^x+2 Answer: x<10 Write the equation log(243)81=4/5 Answer: 243^4/5 = 81 Evaluate ...

**polynomials**

6. Simplify: 4x2yz2 2z Select answer A 2x2y2z2 Select answer B 2x2z Select answer C 2x2yz2 Select answer D 2x2y Select answer E 2x2yz

**math help**

Use the following table to answer the questions. (Give your answers correct to two decimal places.) x 1 1 3 3 5 5 7 7 9 9 y 3 2 6 1 3 3 3 2 5 3 (a) Find the equation of the line of best fit. y hat = + x (ii) Graph this equation on a scatter diagram. (Do this on paper. Your ...