Let x be the unknown number
x×55%=121
x=121÷55%
x=220
So 121 is 55% of 220
The last one- its the only one that applies to the 4* rule.
Answer:
D.3.5
Step-by-step explanation:
4x+2y=10(given)
2x+y=5
y=5-2x-----(1)
y=2x-1------(2)(given)
Since the left side of the equations are the the same,
5-2x=2x-1
4x=6
x=1.5
Sub x=1.5 into eq(1),
y = 5-2(1.5) = 5-3 = 2
so, x+y = 1.5+2 = 3.5
Answer:
1. heights
2. blood pressure
3 . measurement error
4. IQ scores
Step-by-step explanation:
hope this will help you
Answer:
y=-2x+2
Step-by-step explanation:
it has a positive slope
the line should point like this on the graph: picture above
