Answer:
y=20x
Step-by-step explanation:
Since y represents the total cost y is the total. 20x because it is 20 dollars an hour and x after 20 because we do not know how many hours they will plan for lessons.
Hi Sebastian0113,
Your Question:
5.708 x 10^-8 in standard form
Solution:
Decimal Form:
To solve this equation just divide 5.708 by 10 8 times.
= 5.708 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10
= 0.000000005708
5.708 x 10^-8 = 0.000000005708
Standard Form:
5.708 x 10^8
5.708 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10
= 570,800,000
Answer:
Standard Form - 570,800,000
Decimal Form - 0.0000005708
Answer:
r=4.5 I hope this helped!
Step-by-step explanation:
We know that if two lines are Perpendicular then Product of Slopes of both of these Perpendicular lines should be Equal to -1
Given : Equation of 1st Perpendicular line is -x + 3y = 9
This can be written as :
3y = x + 9
y = x/3 + 3
Comparing with standard form : y = mx + c
we can notice that slope of 1st Perpendicular line = 1/3
Slope of 1st Line × Slope of 2nd line = -1
1/3 × Slope of 2nd line = -1
Slope of 2nd line = -3
We know that the form of line passing through point (x₀ , y₀) and having slope m is :
y - y₀ = m(x - x₀)
Here the 2nd Perpendicular line passes through the point (-3 , 2)
x₀ = -3 and y₀ = 2 and we found m = -3
⇒ y - 2 = -3(x + 3)
⇒ -3x - 9 = y - 2
⇒ -3x - y = 7
