Answer:
A) y-4=-1/2(x+6)
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(0-4)/(2-(-6))
m=-4/(2+6)
m=-4/8
simplify
m=-1/2
y-y1=m(x-x1)
y-4=-1/2(x-(-6))
y-4=-1/2(x+6)
X=amount of children tickes sold
y=amount of adult tickets sold
2 times of children as adult
x=2y
total cost is 800
5x+10y=800
divide both sides by 5
x+2y=160
x=2y
2y+2y=160
4y=160
divie by 4
y=40
x=2y
x=2(40)
x=80
80 children tickets
40 adult tickets
It's a good idea to get into the habit of using <u>parentheses</u> when substituting numbers in for variables.
Since <em>a = -3</em> and <em>x = 3</em>, 5a - x is 5(-3) - (3).
5(-3) is -15 and we have (-15) - 3 which simplifies to -18.
Answer:
He saves $0.0175 per mile
Step-by-step explanation:
Before the work done on the car´s engine, it took 0.033 gallons to travel one mile ( 5 gallons /150miles =0.033). After this work, the car spends 0.028 gallons to travel one mile (6 gallons/210 miles =0.028). The difference between this two is:
0.033 gallons/mile-0.028 gallons/mile= 0.005 gallons per mile.
Now Mr.Harper´s saves 0.005 gallons per mile.
In money he saves:
$3,50/gallon*0.005 gallon/mile= $0.0175/mile (the unit of "gallon" cancel each other)
Rounded to the nearest cent:
He saves $0.0 per mile.
Answer:
if f(θ) = 4 is true then print"hello" elif print "ues'
