No, it's not.
15/28 equals to (about) 0.54 while 25/45 is (about) 0.56.
They are close, but not equivalent.<span />
Y = 2x +13
We know the slope to be 2 because lines that are parallel have the same slope. Then we can solve using slope-intercept form and the known point.
y = mx + b ----> Input known values
7 = (2)(-3) + b ---> Multiple
7 = -6 + b ----> Subtract 3 from both sides
13 = b
Now we can use the y-intercept found and the slope to write the equation above.
Permutaions aka slot method
1st slot has 4 possibiliies
2nd slot has 3 since 1 in 1st slot
3rd has 2
multily
4*3*2=24
24 possibilities
456
457
467
465
476
475
546
547
567
564
576
574
647
645
654
657
674
675
745
746
756
754
765
764
what is the difference between the mean and the median of the following distribution. {1,1,1,2,2,2,2,3,3,4,4,4,4,5,5,6,7,7,8,8,9
Travka [436]
Answer:
0.6666666667
Step-by-step explanation:
Mean: 4.6666666667
Median: 4
4.6666666667 - 4 = 0.6666666667
So dad is represented by x
son is represented by y
so x is (x=) 7 times his son (7y)
our first sentence is x=7y
10 years later (x+10, y+10) he will be 3 times as old as his son (x+10=3(y+10))
or 10+x=3(y+10)
so our sentences are
x=7y
and
x+10=3(y+10)
first we subsitute x=7y for x in the second equation
(7y)+10=3(y+10)
7y+10=3(y+10)
we distribute
7y+10=3y+30
subtract 3y from both sides
4y+10=30
subtract 10 from both sides
4y=20
divide both sides by 4
y=5
the son is currently 5 years old
x=7y
subsitute y=5 for y in equation
x=7(5)
x=35
the dad is currently 35 years old
in 10 years
dad is 45 and son is 15
dad=35
son=5