7/9 = 42/54...when 42/54 reduces, it becomes 7/9...so this is proportional because proportions are nothing but equivalent fractions.
u could also check it this way...
12/21 = 15/24
cross multiply
(21)(15) = (12)(24)
315 = 288.....these do not equal and are therefore, not proportionate
440/4 = 300/3
110 = 100....not equal, so not proportionate
120/5 = 88/4
24 = 22.....not proportionate
66/82 = 99/123
0.804 = 0.804.......these are proportional
68/172 = 43/123
0.395 = 0.349......nope, not proportional
Answer:
84
Step-by-step explanation:
x12
Simplify ———
x14
Dividing exponential expressions :
1.1 x12 divided by x14 = x(12 - 14) = x(-2) = 1/x2
Final result :
1
——
x2
Answer:
×=3
Step-by-step explanation:
3× + × + 8 = 20
4×= 12
divide 4 with 12 and it will be 3
Answer:
-3.0mph/s
Step-by-step explanation:
Why?
- If you apply brakes then your bike will experience a retar dation.
- Hence acceleration will be in -
Answer:
x=-0.08 and y=2.92
Step-by-step explanation:
123x + 2(x+3) = -4 y = -0.08 + 3
123x + 2x + 6 = -4 = 2.92
125x + 6 = -4
125x = -10
x= -0.08
