y = 0.05 when x = -0.3
Step-by-step explanation:
The direct variation between y and x is denoted as:
y∝x
when the proportionality symbol is removed, the constant of proportionality is introduced.
Putting y=2 and x = -12
So the equation will be:
Putting x = -0.3
Hence,
y = 0.05 when x = -0.3
Keywords: Proportion, variation
Learn more about proportion at:
#LearnwithBrainly
Answer:
Step-by-step explanation:
In similar triangles, the corresponding sides will be in same ratio
As the ratio of corresponding sides are not proportion, these are not similar triangles
Let's write down what we know:
a=50+b
b=30+c
After one hour:
(a+50)*2=-70+3*(c+50)
let's eliminate the brackets:
2a+100=-70+3c+150
2a+100=+3c+80
which is:
2a=-20+3c
substituting from a=50+b:
100+2b=-20+3c
substituting from b=30+c
100+2(30+c)=-20+3c
100+60+2c=-20+3c
160+20=3c-2c
180=c.
So we know that c is equal to 40, then b will be b=30+c
b=30+180=210.
So B had 210 miles initially.
Distance/Speed = Time
Distance=1,071 Speed=63 Time=x
1,071/63 = x
17 = x
Answer:
13.425¢ per pencil
Step-by-step explanation:
The per-pencil cost is the total cost divided by the number of pencils.
<h3>Application</h3>
The total cost is the cost for 200 pencils plus the cost for shipping:
total cost = $19.90 +6.95 = $26.85
The cost per pencil is ...
total cost / number of pencils = $26.85 / 200 = $0.13425 = 13.425¢
The average cost per pencil is 13.425 cents.