I have this math problem and i was wondering if you someone could check my answer: -6(3x-5y)+z, x= -2, y= -4, and z=5
Is the answer -59 or -79? I am not sure.
2006-09-26 18:32:33 · 11 answers · asked by Sarah S 3 in Education & Reference ➔ Homework Help
or is it none of those?
2006-09-26 18:33:54 · update #1
could you work it out too?
2006-09-26 18:39:37 · update #2
definetely -79
-6(3(-2)-5(-4))+5
-6(-6+20)+5
-6(14)+5
-84+5=-79
2006-09-26 18:37:54 · answer #1 · answered by divinestine 2 · 0⤊ 0⤋
-79
form, sub, solve. Write the formula, substitute the answers and solve. remember PEMDAS
-6(3x-5y)+z
-6([3*-2]-[5*-4])+5
-6(-6- -20)+5
-6*14 +5
-84+5
-79
2006-09-26 19:26:51 · answer #2 · answered by ragnerokk 2 · 0⤊ 0⤋
-6(3x-5y)+z = ?
-6[3(-2) - 5(-4) ] + 5
-6(-6 +20) + 5
-6(14) + 5
-84 + 5
-79
2006-09-26 19:13:40 · answer #3 · answered by pabols 2 · 0⤊ 0⤋
-6(3x-5y)+z, x= -2, y= -4, and z=5
x=-2, y=-4, z=5
-6( 3*-2)-5*-4)+5
-6(-6+20)+5
-6*+14+5
-79
here is your answer.
2006-09-26 20:52:43 · answer #4 · answered by love....me 2 · 0⤊ 0⤋
It has been awhile since I have done Algebra, but I worked it out and came to the same conclusion as divinesti. Which is -79. That was kind of fun!
2006-09-26 18:47:57 · answer #5 · answered by michael_stands_up 2 · 0⤊ 0⤋
I agree with -79, but I know how to spell "definitely" so I should get the 10 points.
2006-09-26 18:46:56 · answer #6 · answered by ? 6 · 1⤊ 0⤋
you equation will look like this after substitution:
-6((3)(-2)-(5)(-4))+5=-79
2006-09-26 18:45:32 · answer #7 · answered by khaLehLa 1 · 0⤊ 0⤋
its -59.
-6(3.-2-(-4*5)+5
=-6(-6+20)+5
=-6*14+5
=-84+5
=-79
good luck
2006-09-26 18:55:49 · answer #8 · answered by Ashley. 3 · 0⤊ 0⤋
do inside () first
3*-2-5*-4 is -6-(-20)
-6+20=14
now you have -6(14)+5
that equals -84+5
that is -79
2006-09-26 18:45:14 · answer #9 · answered by mamills47 2 · 0⤊ 0⤋
I got -79 as well. :)
2006-09-26 18:54:26 · answer #10 · answered by nanaki_13_13 1 · 0⤊ 0⤋