$25.90 because if you move the decimal over one place in 18.50 you get 1.85 that is 10% so you take that times four and get $7.50 add that to 18.50 and you get the answer
No because the formula for a quadratic equation is ax^2+bx+c=0
This is a linear equation however.
Hope this helps
Let y be the temperature
Let m be the rate of temperature drop in degrees per hour
Let x be the number of hours elapsed since 8PM
The initial temperature (at x = 0) is 0
y = mx
Four hours from 8 PM, the temperature was -16.8 degrees
-16.8 = m(4)
m = -4.2 degrees per hour
At 9PM, one hour will have elapsed.
y = -4.2(1)
y = -4.2 degrees
Answer:
2 *( 3+7-9) =(1+5) - ( 8 -4 )
Step-by-step explanation:
2 _( 3_7_9) = (1_ 5) _ ( 8 _4 )
I just started playing with things
2 *( 3+7-9) = (1_5 ) _ ( 8 _4 )
2 * (10-9)
2*1
So the left side is 2
Now to make the right side 2
(1+5) - ( 8 -4 )
6 - 4
2
