# 8th Grade Algebra: Answer Check #2

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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: 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-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 + 6ã10 10. (27/64 (Fractions) Answer: 3(3/8 ?? 11. 10(20 - 3(80 Answer: 10(5 12. (6/49 (Fractions) ...

8th Grade Algebra
Simplify each rational expression. 1. (x^2+1)/(x+1) 2. (y^2+4)/(y+2) Check Answers: 3.(2t^2+6t+4)/(4t^2-12t-16) Answer: (t+2)/2(t-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 ...

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 ...

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

8th grade Math
Can you please check my answer? Solve for x. 7- 7/2x = -5 my answer: x = 42

Soanish-8th grade please check answer
I'm not sure what they're asking in this question- are they asking where you are when you vacation? ¿Dondé te ustedes cuando de vacaciones? Answer-Yo estoy en Florida.

8th Grade Algebra Confusion
Hi. I am starting a new section in Algebra, and I thought I understood it. But when I went to the back of my book to check the answers, they were way off. We are dividing and simplifying radical expressions and equations.

8th grade Math
I'm actually in 7th grade, but I'm doing 8th grade pre-algebra, but anyway, here: I'm supposed to simplify these four problems and I don't really understand how: 28s (15 power) ____ 42s (12 power) 4m+(n[7th power]m) 63m(5 power)n(6 power) ______________________ 27mn 3a·4a(4 ...

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 ...

8th grade math
7z-z can someone please check my answer for the above math question. My answer is 62 is this correct?

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%

8th grade math
I am not sure if I did it correct, can you please check this answer for me, Ms.Sue? :) Writing equations in point-slope form: m:3, p:(-1, -2) (y-y1) = m(x-x1) y-(-2)=3(x-(-1)) y+2=3x+3 y+2-2=3x+3-2 y=3x+1

8th grade pre-algebra
Can you check the following questions,please? Simplify 30. (-2y)^0/(3x^2)^-3 = 1/(3^-3)(x^-6) = 1/-27x^-6 = 27x^6 42. (-7x^5/14y^3)^3 = (-1^3)(x^15)/(2^3)(y^9) = (-1x^15)/8y^9

Health 8th grade
Please check my answer thansks :) Invasive sampling of the blood from the _______ would reval that the blood is mostly dexygenated My answer is pulmonary arteries

8th Grade
Me and my friend are making our own 8th grade binder, you know like writing down planns for our 8th grade year. Here are the sections: - To-Do-List - Doodles (if you are bored) - Projects that are do (school plans) - Graduation Plans (speech, to-do-list, etc.) - Dates for ...

8th grade Algebra
Find sum or difference of: 49z^4 - 25y^4 Is the correct answer? (7z^2)^2 - (5y^2)^2

Science 8th grade check answer
The cellular process involves mitosis is fertilization ? True or False I picked True

9th grade algebra/Ms Sue
Okay Ms. Sue. I am in 8th grade but I am taking Algebra with 9th graders. I am very confused with my previous problem. I have asked my Dad but we are both getting confused. Now I have come up with 22. Is this my correct answer?

Science 8th grade
please check my answer thanks True or false Blood gains oxygen when it passes through the liver I said True

Science 8th grade
please check my answer thanks True or False Blood gains oxygen when it passes through the liver I said true

math
what is the difference between translation , rotation, relections, and dilation in 8 grade work In 8th grade talk, I recommend you check the examples in your book. OR, if you put your definitions here, I can critique them.

8th grade math
Can you please check my answer? A spherical balloon has a volume of 268 cubic cm. If more air is pumped in so that its radius is 3 times as long, what is its new volume? My answer: 2,412 cubic cm

Math
Theo made the table below to show the number of middle school students who attented the last football game. if this data were displayed in a circle graph, how many degrees would be in the sector representing the 8th grade Grades 6,7,8 # of students in 6th grade: 375 7th grade...

Science 8th grade
Please check my answer thanks A woman who recently came home from a tropical vaction now has abdominal pain and diarrhea// Her blod test show an elevated eosinophil level. Which of the following organisms is most likely the cause of her illness? A Bacteria B Worm C Virus D ...

SOMEONE PLEASE ANSWER "8TH GRADE ALGEBRA" QUESTION
Please! It's almost my bedtime!

Science 8th grade check answer
Anterior to the sternum, medial to the thoracic vertebrae ad superior to the diaphragm is the correct location of the heart True or False I am not sure not this on I am going to say False

what can i compare middle school to?
what can i compare middle school to? (use in metaphor), based on 6th, 7th, and 8th grade. for example playing monopoly 6th grade - buying properties, 7th grade- adjusting to the game, 8th grade - stress over money

8th grade
im in advanced math so i do 8th grade math and i don't understand how too gragh the fractions in equations like y=2/3x+1

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.

8th grade math
Can you please check my answer? Marcia wants to make muffins and needs 3/4 cup of a cup of sugar. She discovers, however,that she has only 2/3 of a cup of sugar. How much more sugar does she need? my answer: 1/12 of a cup

8th Grade Algebra
3m - 10 = 2(4m -5)

Algebra 8th grade
(y2-3y)

algebra
8th Grade Algebra (AP) f(x)=-3x Model the rule with a table of values and a graph.

Algebra.
I'm in 8th grade, im in algebra, and this is my question: x=a+b+c ----- ab solve for a. please help!!

Algebra 1: 8th Grade
Simplify each expression. Write your answers using positive exponents. Check Answers Please: 1) 2^3*2^4 = 2^7 2)10^6/10^9 = 1/10^3 3)3^5*3^1 = 3^6 4)5^7*5^-4 = 5^3 5)9^3/9^-10 = 9^13 6) 4^11/4^8*4^-2 = 4^5 7) a^2*a^3 = a^5 8)b^-9/b^4 = 1/b^13 9)c^-5*c^-2 = 1/c^7 11)(5d^4)(8d^6...

algebra 8th grade
20÷ 4 ? 3/4 ÷ (1/2) use this <> and =

Algebra 8th grade
3a + 5b = 70 6a + 9b = 135

Algebra 1- 8th Grade
Find each product. 1) 2t(t + 2) 2) (2n +1) * (n - 4)

8th Grade Algebra
How come x^4/3 is a ploynomial, but 3/x^4 isn't?

8th grade algebra
-12x=14-5x please and thank you!

8th grade math in pre-algebra
6(2x+3)=42

8th Grade
Whta is a verctorican (srry i can't spell that) award when the 8th graders get one?????

8th Grade Math
Can you please check my answer? An American football field is a rectangle 120 yards long (including both end zones) and 53 1/3 yards wide. What is the area of an American football field? my answer: 6360 square yards

Algebra 1- 8th Grade
How do you solve these types of problems? 1) 3 - n = 32 3m - 8n - 6 = 0 2) 2p - q = 8 1/3p + 1/4q = 3

8th Grade Algebra
How do you solve this problem? 3x = 4y x + y = 21 Help please.

8th Grade Algebra
1. (y^2+6y+1)(3y^2-3) 2. (4x^2-2x-1)(3x-1) 3. (n^2-n+2)(n+2) Help!! I'm trying to help my daughter with her homework.

8th grade
what's the answer to .5x-y=8

8th grade algebra
what is the square root of 9x (to the power of 8) Explain too?

Algebra 1 (8th Grade)
How can I factor 18x^2+x=5 by completing the square?

8th grade
what is the answer to the equation 4z-2=30?

Science 8th grade
Please check my answer thanks Which of the folowing process is achieved through osmosis ? A. A cube of sugar didilving in coffee B. Particles of oxygen filling the lungs C. Water moving across thr cell membranne D. Transport of proteins from the endoplasmic reticulum to the ...

Spanish 8th grade-Please check answer
Is this correct the way I answered this-I don't like onion cake so I'm telling them Sorry,but I don't like it. ¿Quieres comer pastel de cebollas conmigo? Lo siento pero no, no me gusta pastel de cebollas. Thank you

Algrebra and Math
Can you help me answer this question? I'm confused, and show me how you did it, that way I can understand on how to solve it more? The total number of students in 8th Grade is 32, including Fran and Billy, Who are one of the female and male students respectively. Fran has ...

8th grade
ok ihave three problems for homework in algebra 1 honors Y+3=3+Y 6*1/2-Y=3*2 3/4+Y=0.75+Y

algebra
1/2x+6=1/3x Please help. my college grad mom can't help with my 8th grade math!

algebra 1 8th grade
I cannot solve for x in the following expression, -4 + 2x + 2 = x + 1 + x. Am i missing something?

8th grade algebra
1 / 2 times Y plus 3 equal 15 What is the value of the Y. 1/2 x y + 3= 15 What does the Y stand for. Thank you

8th grade
Math Algebra With Pizzazz (in music, What Does "Allegro" Mean?

8th grade
1 1 1 - . - . - 5 5 2 help me answer this fraction problem

8th grade math
Solve for x. 6 - x = -10 + 7 my answer: x = 9

8th grade algebra 1 b
Does anyone have the answers to the Unit 4 Lesson 10 test? The connection academy eighth grade one. It is the Quadratic Functions and Equations Unit Test that has 24 questions. Thanks.

8th Grade Math
The temperature in Toronto at noon during a winter day measured 4°C. The temperature started dropping 2° every hour. Which inequality can be used to find the number of hours, x, after which the temperature will measure below -3°C? Can you please check my answer? 4−2x&...

8th grade pre algebra
i am having trouble with solving inequalitys... how do you solve t+6>-3

Algebra 1- 8th Grade
What is the relationship between the x-intercepts of a parabola and its vertex's x-coordinate?

8th grade
this is a algebra pizzazz question what happened to the glass blower who inhaled?

8th grade algebra
write a function to describe each statment buying apples for \$.89 a lb

Algebra 1 8th grade
Can a graph that is in a complete circle possibly have a function

8th grade
Can someone give me a written answer for this: 2.3w - 3.2 + 4.1 = -6

8th grade Science
In ionic bonds, what is the answer to these? Li + P and Rb + As and Pb + F and Bc + N ??

Science 8th grade
Please check my answer thanks What's the potential benefit of administering CPR to a person whose heart has stopped beating? A. Prevent blood clots B Prevent permanent brain damage C Prevent pericardial effusion D Prevent heart failure I picked D

8th grade math
I am in 8th grade math as a sixth grader. I am stuck on one problem. It is this: You are making a necklace that is 9 inches long. You use 6 beads for each inch. what integer is the change in your supply of beads after making the necklace?

fractions
Mr.shafier has been teaching school for 10 years.For 6 of those years he taught 8th grade.what fraction represents the time Mr.shafier has not been teaching 8th grade?I knoe the answere is 2 5ths. but how do i show work?HELP!!!!!!!!!!!!!!!

algebra
Is there a site or someone who can help me, im not getting the basic algebra...I need someone or a web site that will help me understand the basics of algebra. PLZ HELP Im in 8th grade

Science 8th grade
Please check my answer thanks What makes up most of the volume of blod plasma ? A Reb blood cells B Water C Plasma proteins D White blood cells I think it's Red blood cells

8th Grade Algebra
How can you tell if these three equations have a common solution? 3x - 5y = 1 4x - y = 24 2x - 3y = 2 Please help ?

8th grade Algebra
Use the Distributive property to rewrite the expression and simplify. 6(y + 13)+ 21y

MATH help asap
connections academy 8th grade Lesson 9: Integers and Algebra help please anyone!

8th grade
what is the answer to what do you call drilling 4,876 holes?

8th grade
is a shortage of tyrosine the cause of albinism? can u explain the answer.

8th grade
what's the answer to this equation? 5+4 times (8-6) to the second power.

8th Grade Algebra
You know how to solve quadratic equations using algebra, graphs and the quadratic formula. Sometimes one method of solving is more convenient than another method. Describe how you would solve each equation. Give reasons for you answers. A) 16x^2 = 1600 B) x^2 - 350 = 0 C) x^2...

Algebra 1: 8th Grade
How many values of x make each statement true? Explain your reasoning. a) 3x+3=3(x+1) b) x-4-x=0 I don't get what the question is telling me to do. Help?

8th grade algebra
same slope?? y=-3x+7 y=3x+33 and what type equation? dependent consistant? independent? inconsistant?

8th Grade Algebra
I need to know a quadratic equation that have: 1) exactly one negative solution

Math
How many 7th grade students are expected to move by the end of the year? If 12 students actually moved, did more or fewer 7th-grade students move than expected? Justify your answer. 6th-grade # of students: 250 % moves: 2% 7th-grade # of students 200 % moves: 4% 8th-grade # of...

Math: Mean, Median, Mode, Range & Finding the devi
What is deviation? And what is the definition of frequency distribution & how would I solve a problem in 8th grade math with this problem...My child is asking about this problem she has in an 8th grade book. Given the following numbers 2,2,3,6,1,9,4,2,5,7,6,8,6, What is the ...

8th grade pre-algebra
how to use a grid and lenghts of line segments to give a geometric argument

8th Grade Pre-algebra
3. Select all of the numbers that are correctly written in scienctific notaton A)42 x 10^5 B) 1.1 x 10^4 C) 7.0 x 20^4 D) 6.01 x 10^-4 E) 18.0 x 10^3 4. Simply (2.0 x 10^4)(3.0 x 10^3) A)6.0 x 10^7 B) 6.0 x 10^12 C) 6.0 x 10^5 D) 6.0 x 10^43 5. (7.0 x 10^6)+(2.0 x 10^6) A)9.0 ...

Science-8th Grade
In metric, we use_______to measure volume. is the answer mass ??

Health 8th grade
Please check this question for me thanks What method of sterilization uses the same agents as are used to disinfect instruments ? A dry heat B gas C chemical D surgial asepisis I pick C

8th Grade Algebra
Rewrite each polynomial as the product of two binomials. 1. y^2 + 6y + 9 2. 25x^2 - 10x + 1 3. 36 - y^2 Can someone please help me do these correctly?

8th Grade Algebra
(b^2-10b+21)/(b^2-11b+28) I need help trying to figure out how to factor each quantity or parentheses. and then simplifying it.

8th grade algebra
I'm not sure how to finish simplifying this problem. 1. (3 x 10^-2) - (6.2 x 10^1) = (.003 x 10^1) - (6.2 x 10^1) = -6.197 x 10^1 (need to make positive 'tween 1 and 10)

10th grade - chemistry
what is 670.8/1000000000 and then what is 3.0 * 10 to the 8th power divided by the top answer ...

U.S History- 8th grade
What was the geography and economy like in the England colonies, middle colonies, and southern colonies? Do you guys know any good websites to check out?

8th grade Math
Can you please check my answers? Wally ordered a pizza. He ordered 4/9 of the pizza with sausage, 1/5 of the pizza with extra cheese, and the rest of the pizza with bell peppers. How much of the pizza had bell peppers on it? My answer: 29/45 of a pizza

8th grade
what is the area of a regular hexagon ABCDEF if AB= 2 units? express your answer in simplist form.

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