Answer:
Answer:
The value of (f-g)(x)=4^x-5x-14
Step-by-step explanation:
Given : If f(x) = 4^x-8 and g(x)=5x+6
To find : The value of (f - g)(x)?
Solution :
f(x) = 4^x-8
g(x)=5x+6
We can write, (f-g)(x)=f(x)-g(x)
Substitute the value of f(x) and g(x)
(f-g)(x)=4^x-8-(5x+6)
(f-g)(x)=4^x-8-5x-6
(f-g)(x)=4^x-5x-14
Therefore, The value of (f-g)(x)=4^x-5x-14
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3.5 (E) - 6.7 (B)+ 8 (t)= 18.2
Answer: 7
Step-by-step explanation:
-if y is the width and the length of area k (see diagram), the difference between n and y is of 2 square sides, one at each side of y.
-therefore, assuming that n is a whole number and that there aren’t half squares, y must be a whole number too because, as previously said, n-y = 2 so y= n -2
-the only perfect square amongst the values for k you listed is 25, so taking n and y as whole numbers the only possible value for k is 25
-therefore y is 5 and n is 7 because n-y = 2 so y + 2 = n
Answer:
A. T = 20°C - (2.8°C/h × 4h)
Step-by-step explanation:
The rate of change of temperature (-2.8°C/h) is multiplied by time (4h) to get the change in temperature (-11.2°C). That change is added to the initial temperature (20°C) to find the temperature after 4 hours.
Only equation A properly expresses this calculation.
In choice B, the rate of change is (wrongly) shown as +2.8°C/h. In the other choices, the combinations of units are nonsense. (What is a °C·h?)