Answer:
Answer:
x=3 and y=1
Step-by-step explanation:
Let's solve your system by substitution.
x=3y;2x+4y=10
Step: Solvex=3yfor x:
x=3y
Step: Substitute3yforxin2x+4y=10:
2x+4y=10
23y+4y=10
10y=10(Simplify both sides of the equation)
10y
10
=
10
10
(Divide both sides by 10)
y=1
Step: Substitute1foryinx=3y:
x=3y
x=(3)(1)
x=3(Simplify both sides of the equation)
Answer:
x=3 and y=1
Answer:
If two lines are perpendicular and neither one is vertical, then one of the lines has a positive slope, and the other has a negative slope. Hope this helps.
Step-by-step explanation:
Answer:
Median = 36
Step-by-step explanation:
To calculate the median number of miles Jenna cycled, we must first rearrange the numbers. The rearranged numbers are:
28, 31, 36, 36, 42, 48, 52
The middle number is 36
The median it therefore = 36
Answer:
Step-by-step explanation:
(7x-3)(12x-7)
we are solving for x and we are multiplying.
we start with the x's 7x*12x= 84x
-3*-7=21
so now we have
84x+21=0
the 0 is a placer for answering the question
we minus 21 to both sides
84x=-21
now we divide
84/-21= -4
x=-4
Answer:
Step-by-step explanation:
Before adding we require the fractions to have a common denominator
The lowest common denominator of 2, 5 and 3 is 30, thus
+ 
+ 
= 
+ 
+ 
Add the numerators leaving the denominator
= 
=
