Answer: False
Step-by-step explanation: I did this already
You can write it as 454 kg in 3 significant digits.
Answer:
Option A.
Step-by-step explanation:
It is given that, sales (in hundreds) for several months can be modeled by the function:
We need to find the month in which 400 toys were sold.
Substitute S(m)=4 in the given function.
Now,
or 
or 
or 
Approx the value to the next whole number.
or 
It means, 400 toys were sold on 7th and 10th month.
Therefore, the correct option is A.
Answer:
(
−
2
,
4
)
Step-by-step explanation:
There were no graphs listed in your question. So...
Convert the inequality to interval notation.
I'd suggest using "elimination by addition and subtraction" here, altho' there are other approaches (such as matrices, substitution, etc.).
Note that if you add the 3rd equation to the second, the x terms cancel out, and you are left with the system
- y + 3z = -2
y + z = -2
-----------------
4z = -4, so z = -1.
Next, multiply the 3rd equation by 2: You'll get -2x + 2y + 2z = -2.
Add this result to the first equation. The 2x terms will cancel, leaving you with the system
2y + 2z = -2
y + z = 4
This would be a good time to subst. -1 for z. We then get:
-2y - 2 = -2. Then y must be 0. y = 0.
Now subst. -1 for z and 0 for y in any of the original equations.
For example, x - (-1) + 3(0) = -2, so x + 1 = -2, or x = -3.
Then a tentative solution is (-3, -1, 0).
It's very important that you ensure that this satisfies all 3 of the originale quations.
