Answer:
x = 5
Step-by-step explanation:
(2x - 1) / 9 = 3x / 15
Cross multiply
9(3x) = 15(2x - 1)
Distributive
27x = 30x - 15
Subtract 30x from both sides
-3x = -15
Divide by -3 on both sides
x = 5
Answer:
Step-by-step explanation:
slope of line through (6,-1) and (11,2) = (-1 - 2)/(6 - 11) = 3/5
slope of line through (5,-7) and (8,-2) = (-7 - (-2))/(8 - 5) = -5/3
product of the slopes = -1, so the lines are perpendicular.
Answer:
x = 5
Step-by-step explanation:
The table and a graph of f(x) and g(x) are shown in the attachment. The solution is x=5. The table shows you f(5) = g(5) = 2, as does the graph.
It is generally convenient to make use of a graphing calculator or spreadsheet when repeated evaluation of a function is required.
Answer:
x represents hours of babysitting
y represents hours of music lesson
hours on babysitting: 11
hours on music lessons: 7
Step-by-step explanation:
x+y=18
5x+12y=139
-5(x+y=18)
=-5x-5y=-90
(5x+12y=139) + (-5x-5y=-90)
7y=49
y=7
x+7=18
x=11
Answer:
The value of given expression is 3.
Step-by-step explanation:
The given expression is

According to the rule of addition and subtraction,

It means,

By using this rule we get,


Therefore the value of given expression is 3.