I need help with algebra 2?
Let the number = x Half the number = x/2 Reciprocal of half the number = 2/x Reciprocal of the number = 1/x Half the reciprocal of the number = 1/2x So 2/x + 1/2x = 1/2 Multiply both sides by 2x 4 + 1 = 2x/2 5 = x So the number is 5
I need help with algebra 2?
10) radical 2 (2 radical 3+radical 6) 2radical 6 plus radical 12 2radical 6 plus 2 radical 3 thats all you can do unless you want to take out a 2 and do 2(radical six+radical 3) 22) 2x^3-x^2-15x=0 take out an x x(2x^2-x-15)=0 x=0 or do pathagoriem theorem 1+or-the square root of 1^2-4.2.-15 all over 4 1+or-the square root of negative 119 all over 4 1+or-the square root of 119 i (i for imaginary #) over 4 Voila the answer is 1+or- the square root of 119 i all over4
I need help with Algebra 2.?
1) x^4 - 36 [substitute a as x^2] a^2 - 36 [now use the difference of squares: x^2 - y^2 = (x + y)(x - y) ] (a - 6)(a + 6) [now re-insert x^2] (x^2 - 6)(x^2 +6) 2) c^4 - 81 [substitute x for c^2] x^2 - 81 [use difference of squares] (x - 9)(x + 9) [re-insert c^2] (c^2 - 9)(c^2 + 9) [use difference of squares] (c - 3)(c + 3)(c^2 + 9) 3) x^4 + x^2 - 20 [substitute a for x^2] a^2 + a - 20 [factor by whatever method you prefer] (a + 5)(a - 4) [re-insert x^2 for a] (x^2 + 5)(x^2 - 4) [use difference of squares] (x^2 + 5)(x - 2)(x +2) 4) 6y^6 - 5y^3 [factor out a y^3] y^3 (6y^3 - 5) 5) x^6 - 4 [substitute x^3 for a] a^2 -4 (a - 2)(a +2) [re-insert x^3] (x^3 - 2)(x^3 + 2) 6) d^4 - 7d^2 +10 [substitute a for d^2] a^2 - 7a +10 [factor] (a - 5)(a - 2) [re-insert d^2] (d^2 - 5)(d^2 - 2) 7) 24q^3 - 81 [factor out a three] 3 (8q^3 - 27) [use difference of cubes: x^3 - y^3 = (x - y)(x^2 + xy + y^2) ] 3 (2q - 3)(4q^2 + 6q + 9) 8) a^6 + 7a^3 + 6 [substitute b for a^3] b^2 + 7b + 6 [factor] (b + 6)(b + 1) [re- insert a^3] (a^3 + 6) (a^3 + 1) [use sum of cubes] (a^3 + 6) (a + 1) (a^2 - a + 1) 9) -4x^4 +26x^2 - 30 [factor out -2] -2 (2x^4 - 13x^2 +15) [substitute a for x^2] -2 (2a^2 - 13a +15) [factor] -2 (2a - 15) (a + 1) [re-insert x^2] -2 (x^2 - 15)(x^2 + 1) 10) 2b^4 + 14b^3 - 16b -112 [group the first and third, and the second and fourth terms] (2b^4 - 16b) + (14b^3 - 112) [factor 2b out of the first, and 14 out of the second] 2b(b^3 - 8) + 14(b^3 - 8) [factor out (b^3 - 8) ] (b^3 - 8)(2b +14) [use difference of cubes] (b - 2)(b^2 -2b + 4)(2b + 14) [factor out a two out of the last term] 2(b - 2)(b^2 - 2b + 4)(b + 7)
Need help with algebra 2 question?
z = 5y - 2x + 9 when x=10 and y=3, z = 5*3 -2 *10 +9 = 15 - 20 + 9 = 4
Need help with algebra 2 mathbits box 9!?
6, 5, 4, '3', 2, 1, 0 . . . powers of x term 0, 1, 2, '3', 4, 5, 6 . . . powers of y term the coefficient of the fourth term can be found in Pascal's triangle . . . or by evaluating 6C3 . . . so the fourth term is 20x³(-y)³ = -20x³y³ 2) 11!/(4!4!2!) = 34650 3) 0.25
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How do I get an A in Algebra 2?
Alexander Sherman has written a good specific answer, so I will just talk about some general things for High School Maths.Here is basically what I used to do in High School for all math classes.Read your text carefully. Reread all the examples of calculations. Attempt your homework, trying to remember (without looking) similar examples from the text. Write best attempt at solution. Re-read relevant examples to your homework problems, and use these examples to correct any errors in your homework. Rewrite homework correctly on a “hand in” sheet, for handing in later.When you go to class, spend a few minutes reviewing your notes from last class, or your reading if the teacher follows your book.In class, take notes of the important statements, and outlines of proofs, and write out all examples. Review these notes before doing that nights reading/assigned work.Repeat this cycle for each class/lecture/homework all semester. When assignments/exams come back, really study whatever you got wrong, and why, and improve yourself (by understanding what happened and setting mental alarm bells against repeating those mistakes) so that those mistakes won’t occur again.On weekends, spend 45 extra minutes reviewing your notes from the past week’s lectures.At end of semester, skim through all of your notes, trying to recall all outlined material.Can you:state all definitions correctly?state all theorems correctly?think of example questions/idea for each theorem, where you see the theorem in action?solve examples of each basic sort of problem that has been asked?Finally, it is very important that you check all of your written work on exams calmly at the end of the exam. checking for ‘stupid mistakes’ will save you a lot of pain and really help your grade.Good luck!
Needed help in Algebra 2 on - Elimination!!?
2p - q = 5 3p + q = 5 -------------- 5p = 10 p = 10/5 p = 2 2p - q = 5 2*2 - q = 5 -q = 5 - 4 -q = 1 q = -1 Sol: {2; -1} 2.) 2j - k = 3 3j + k = 2 --------------- 5j = 5 j = 1 2j - k = 3 2*1 - k = 3 -k = 3 -2 k = -1 Sol: {1;-1} 3.) -3c + 2d = -2 3c + 4d = 50 ------------------ 6d = 48 d = 48/6 d = 8 3c + 4d = 50 3c + 4(8) = 50 3c + 32 = 50 3c = 50 - 32 3c = 18 c = 18/3 c = 6 Sol: {6;8} 4.) 2f + 3g = 9 f - g = 2 f = 2+g 2(2+g)+3g = 9 4 + 2g + 3g = 9 5g = 9 -4 5g = 5 g = 1 f = 2 +g f = 2 = 1 f = 3 Sol: {3;2} 5.) -2x + y = -1 x + 2y = 3 x = 3 - 2y -2(3-2y) + y = -1 -6 + 4y + y = -1 5y = -1 + 6 5y = 5 y = 1 x = 3 - 2(1) x = 3 - 2 x = 1 Sol: {1; 1} 6.) 2x - y = 12 2x - y = 6 --------- null :>:
Another Algebra 2 word problem I need help with.?
A trucking company is hired to deliver 125 lamps for $12 each. The company agrees to pay $45 for each lamp that is broken during transport. If the trucking company needs to receive a minimum payment of $1365 for the shipment to cover their expenses, find the maximum number of lamps they can afford to break during the trip. Please show all work.
Do you need algebra 1 to do geometry and do you need geometry to do algebra 2?
You definitely need Algebra 1 to do Geometry, as you do need to know how to solve for variables and graph basic equations for Geometry so you can find certain features of graphs or find the sides or volume of a shape.However, you don’t necessarily need Geometry for Algebra 2. I did them at the same time, and while at times Geometry concepts would come up in Algebra 2 that I didn’t know, my teacher would end up going over them again anyway because no one remembered it from Geometry, so I was fine.It depends on the school though. My school does Geometry before Algebra 2 (unless you double up like I did), but some do Algebra 2 before Geometry. Some schools allow you to double up, some don’t. Check the prerequisites for the classes at your school and check to see if they allow doubling up, and that’ll answer your question. If you can double then you don’t need Geometry for Algebra 2 and vice versa at your school, but if you can’t then your school set it up so you need one before the other.