what is a good algebraic expression for the product of 5 and a number?
what is a good verbal expression for 2nwith a small 3 next to n plus 12?
15 divided by 3 x 5-4 squared
and lastly how do you evaluate :
2xy-z with a small 3
over z
thanks for anyone that can honestly give me the rights answers and 10 points to person who gives mostly correct answers. thanks!
2007-09-18 10:05:11 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Looks like you got the right answers already on the first two.
On the last one. "with a small 3" is to the third power, which I will show like this ^3
(2xy - z^3)/z
Divide both terms by z . This is the distributive property
(2xy)/z - z^3/z
(2xy)/z - z^2
That's it. Since you don't have a full equation, you can't just multiply it by z. That would completely change the value of the expression. You just have to leave that z under the 2xy.
2007-09-18 12:22:37 · answer #1 · answered by The Babe is Armed! 6 · 0⤊ 0⤋
what is a good algebraic expression for the product of 5 and a number? 5x
what is a good verbal expression for 2nwith a small 3 next to n plus 12? 2 times n to the third plus 12
15 divided by 3 x 5-4 squared = 9
Hope these are right and that i helped.
2007-09-18 10:11:56 · answer #2 · answered by Stevie B 2 · 0⤊ 1⤋
1. 5x
2. two times n to the third power plus 12
3. do you mean a) 15/3*5-4 squared or b) 15/ (3*5-4 squared)
a) 9 b) -15
4. (2xy-z^3)/z
(2xy/z) - (z^3/z)
(2xy/z) - z squared (can be left off here for some uses)
can then:
((2xy/z) - (z^2))*z (to get z out of the denominator
2xy - z^3 (aka (2xy - z to the third power)
2007-09-18 10:23:11 · answer #3 · answered by kt_dance_sing 1 · 0⤊ 0⤋
4(3/4)x +4(2) = 4(11) multiply everything by 4 3x+8=44 3x=36 subtract 8 from both sides x=12 divide three on both sides -2 1/5x -33=22 -11/5x -33=22 change to an improper fraction 5(-11/5x) -5(33)=5(22) multiply everything by 5 -11x -165=110 -11x=275 add 165 to both sides x=-25 divide both sides by 11 -2y - 3y + 7 - 5y =-73 (-2-3-5)y+7=-73 all the numbers that are factors of y can be written this way -10y+7=-73 -10y=-80 subtract 7 from both sides y=8 divide both sides by -10 -2/3x + 2 = -22 3(-2/3)x + (3)2 = 3(-22) multiply everything by 3 -2x +6= -66 -2x= -72 subtract 6 from both sides x=36 divide both sides by -2
2016-05-17 22:44:31 · answer #4 · answered by ? 3 · 0⤊ 0⤋
5x
2n sub 3 plus 12
15/(3*5 -4^2)
(2xy -zsub3)/z
a small n or small z is what i have taken to mean a subscript. Sorry if my assumption is wrong.
2007-09-18 10:15:46 · answer #5 · answered by ironduke8159 7 · 0⤊ 0⤋
5x=y
what is the product of 2 times a number cubed plus 12
9
2xy=z cubed? i don't know what you mean by evaluate.
2007-09-18 10:16:24 · answer #6 · answered by jessi f 2 · 0⤊ 0⤋
5x
2n^3 +12
15/(3x5-4)^2
2xy-z^3/z- you can't evaluate because it's not an equation
2007-09-18 10:11:58 · answer #7 · answered by peteryoung144 6 · 0⤊ 1⤋