Answer:
X= 4
Step-by-step explanation:
28 = 4(x+3)
7 = x+3
x = 4
Answer:
B. 3≤x≤ 6
Step-by-step explanation:
When a question asks for the domain of a function, it is asking for <u>all possible x-values</u>. Look at the graph of the function- there are no points on the graph where x=1, so we know that C and D are definitely wrong since they include 1. The two that are left look very similar, but A means "3 is greater than or equal to x, x is greater than or equal to 6." This has to be wrong because it says that 3 is greater than 6, which is obviously incorrect. The only answer left is B, which is correct because it includes all possible x-values.
lmk if this is incorrect or hard to understand, hope this helps!!!
(btw dont click on unknown links like the one in the other answer)
SOLUTION
From the question, we are told that y varies inversely as x
This is mathematically written as
Now, we will remove the proportionality sign and replace it with equal to sign =
If we do this, we will intoduce a constant k
So we have the formula
We will substitute the values of x for 10 and y for 8 into the formula to get k, we have
Now, we will substitute k for 80 back into the formula to get the inverse function, we have
Hence the answer is option C
It would be 40°F, the temperature drops down 2 degrees in one hour, and theres 3 hours til 3:00am, so it dropped 6° then it would 28°F, then it adds 3° every hour until 7:00am, which is 4 hours, so that would be 28°F+12°F= 40°F
So, we need to subtract fractions.
4 3/4 - 3 1/4.
4 - 3 = 1
3/4 - 1/4 = 2/4 OR 1/2
Your answer is 1 1/2.
Glad I could help, and good luck!
AnonymousGiantsFan