10.10 of the answer choices. if u look closely
Step-by-step explanation:
-9x-4y=1....eq1
3x+3y=3.....eq2
multiply eq2 by 3
to get
9x+9y=9....eq3
add eq1 and 3
0+5y=10
5y=10
divide both sides by 5
y=2
substitute y=2 in to eq1
-9x-4(2)=1
-9x-8=1
grouping of like terms
-9x=1+8
-9x=9
divide both sides by -9
x= -1
now the answer is
x= -1, y=2
Answer:
{0, –3, –9, 5, 7)}
Step-by-step explanation:
The range of the function is the list of second numbers in the ordered pairs:
{0, –3, –9, 5, 7)}
_____
If you like, you can rearrange them to increasing order:
{-9, -3, 0, 5, 7}
Answer: -5(3y+5)
Step-by-step explanation:
Answer:
$0.5
Step-by-step explanation:
Given data
Cost of 5 pencils= $2.50
Required
The cost per pencil
The cost per pencil is
Cost of 5 pencils divided by 5
=2.5/5
=$0.5
This is the constant of proportionality
For any number of pencils x
The cost is
Cost =0.5x
Hence the cost of one pencil is $0.5
