Answer:
and 
Step-by-step explanation:
The pattern is that a term gets divided by 2 to find the next term. 1 divided by 2 is
and when you divide that by 2 you get 
20 + 25(times the number of hours) = 282.50
You add the 20 because of the one time service fee.
Now lets work this out.
20 + 25x =282.50
25x = 262.50 (subtract both sides by 2 to get the x's alone)
x = 10.5 (divide both sides by 25 to get just x)
x = 10.5 hours
So the answer is A.
Given :
Sin x = 4/5
Using the rule of SOH CAH TOA,
we know that,
Sin x = opposite/Hypotenuse
So,
When the triangle is dilated, the opposite side will be dilated to 8 and the Hypotenuse will be dilated to to 10.
which means 4/5 will become 8/10
and hence,
8/10 after simplifying will be 4/5.Thus there is no change.
Hope this helped!
Brainliest is very much appreciated.
Function A because in one hour it gets up by 4 but in function B it gets up by only 2
Solve the following system:
{x + 7 y = 0 | (equation 1)
{2 x - 8 y = 20 | (equation 2)
Swap equation 1 with equation 2:
{2 x - 8 y = 20 | (equation 1)
{x + 7 y = 0 | (equation 2)
Subtract 1/2 × (equation 1) from equation 2:
{2 x - 8 y = 20 | (equation 1)
{0 x+11 y = -10 | (equation 2)
Divide equation 1 by 2:
{x - 4 y = 10 | (equation 1)
{0 x+11 y = -10 | (equation 2)
Divide equation 2 by 11:
{x - 4 y = 10 | (equation 1)
{0 x+y = (-10)/11 | (equation 2)
Add 4 × (equation 2) to equation 1:
{x+0 y = 70/11 | (equation 1)
{0 x+y = -10/11 | (equation 2)
Collect results:
Answer: {x = 70/11
{y = -10/11