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
Algebra 2 I need help with this problem.?
Im in high school and need some help on a problem.its a story problem. The resistance caused by friction between blood and the vessels that carry it can be modeled by the equation R=2/3 lr to the negative 4th. Where R is the resistnace, l is the length of the blood vessel, and r is the radius of the blood vessel. a) write the resistance equation, R=2/3 lr to the negative 4th with positive exponents only. Heres what I have so far for a) R= 2/3 (0.2)(0.015) to the negative 4th.
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 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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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.
I need help on algebra 2-standard notation?
this is from Intermediate algebra 10th edition , that's the book. ok this is the problem its on scientific notation: In 2000, the population of the U.S. was 281.4 million. a) write the 2000 population in scientific notation. b) write $1 trillion-that is, $1,000,000,000,000-in scientific notation. c) Using your answers from parts (a) and (b), calculate how much each person in the United States in the year 2000 would have to contribute in order to make one person in the nation a trillionaire. Write this amount in standard notation to the nearest dollar. Thank you if you can help me thats great :D i just need to figure out c