I am clueless.
2007-09-03 19:48:09 · 14 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
90 / 3 = x
x = 30
2007-09-07 19:39:40 · answer #1 · answered by Como 7 · 0⤊ 0⤋
x= 30! 3 times 15 is 45 , so 2 times 15 equals 30
2007-09-04 02:54:03 · answer #2 · answered by apple w 1 · 0⤊ 0⤋
if both equations are equal meaning 3 times what to 45, 2 also times with what. we know 3 X 15 =45, so 2 x 15= 30.therefore x=30
2007-09-04 02:54:56 · answer #3 · answered by Anonymous · 0⤊ 0⤋
2/3 2 to 3 its a ratio! x/45 find x
what would 2/3 s of 45 be?
45 divided by 3 then multiply by 2
next time you get a question like this
rewrite it into a fraction
2007-09-04 02:56:19 · answer #4 · answered by JeeVee 6 · 0⤊ 0⤋
There are many ways to this question:
Here are 3:
1. move 45 to the left--->(2/3)*45
=30= x
2.3*(what)=45
3*(15)=45
so, 2*15=30
3.cross mutiply:
3x=90
x=30
2007-09-04 02:56:15 · answer #5 · answered by Wonder why 2 · 0⤊ 0⤋
45 is the denominator on one side, putting it on the other side changes it to a numerator and its operation to a multiplier of 2 ( cross multiplication ). therefore:
(45 x 2 ) divided by 3 equals 90 divided by 3 equals 30
2007-09-04 02:57:50 · answer #6 · answered by Ian O 2 · 0⤊ 0⤋
x is 30
2007-09-04 02:54:29 · answer #7 · answered by IT'S ME AGAIN 6 · 0⤊ 0⤋
2/3 = x/45
3x = 90 ; cross multiply
x = 90/3 ; divide both sides of eqn by 3
x = 30
2007-09-04 02:55:44 · answer #8 · answered by Querilous 4 · 0⤊ 0⤋
30.
2/3=.6666666
30/45=.6666666
Mimes the easiest to follow. Guess and Check B*tches!
2007-09-04 02:53:27 · answer #9 · answered by Anonymous · 0⤊ 0⤋
30/45.....the number they have in common is "5"....multiply the numbers by five. 3x15=45 for the denominator.
2007-09-04 02:55:58 · answer #10 · answered by life coach on wheels 1 · 0⤊ 0⤋