Convert 2/5, 1/4 and 7/10 to fractions with like denominators.


Since 8/20,5/20 and 14/20 have the same denominator, add their numerators to add them up.


If u multiply the first equation by -4, u get -2x - y = -20
and when u add the 2 equations..
-2x - y = -20
2x + 3/8y = 5
-----------------
0 - 5/8y = -15.....u notice that the x terms r eliminated.
Answer:3.4d
Step-by-step explanation: From Range Rule of thump:
Standard Deviation = (Range)/4
=[(Highest value - lower value)]/4
=(189.2 - 175.6)/4
=13.6/4
=3.4
1) What transformation takes the graph of f(x)=4x+9 to the graph of g(x)=4x+7 ?
Both have same slope = 4
f(x)=4x+9 , y - intercept b = 9
g(x)=4x+7, y - intercept b = 7; 2 units down from f(x)
Answer
translation 2 units down
2) The graph of function g is a vertical stretch of the graph of function f by a factor of 3.
Which equation describes function g?
Vertically stretch | a | > 1
Stretch by factor of 3 so f(x) = 3f(x)
Answer
g(x) = 3f(x)
2 minutes is the answer difference