Answer:
Size of groups known: First and last questions (The rice and cups ones)
Number of groups known: Second and third questions (Cars and hats)
Step-by-step explanation:
In the first problem, you know that one sack is one group, and it tells you that each sack weighs 3 kg. Therefore, you know the size of the group (or a sack).
In the last one, you know that a table is one group and each table fits 4 cups. So, you know that the size of the group is 4 cups.
In the second and third questions, you know that each group is a row (cars) or "equal group" (hat) and that there are 4 of each. So, you know that there are 4 of each group, meaning you know the "number of groups"
Answer:
Negative 27
Explanation:
Answer:
Step-by-step explanation:
R = P * Q
Let's make differentiation for time (t)
dR/dt = (dP/dt)*Q + P*(dQ/dt)
dR/dt = (dP/dt)*30 + 15,000*2
The revenue starts to drop means dR/dt < 0
Then:
(dP/dt)*30 + 15,000*2 < 0
(dP/dt)*30 < -30,000
dP/dt < -1,000
Thus, the monthly revenue starts to drop when the price drops more than $1,000 per month.
Answer:
x = 25
Step-by-step explanation:
Using the formula a²+b²=c², you can easily find out the hypotenuse of the triangle (which is the long side of it, and is the x in this problem.)
If we substitute the side lengths for the question in a²+b²=c², you'll get
20²+15²=x²
Simplifying the numbers and squaring them, you get
400+225=625²
Since you want the value of the x side, you'll need to root 625.
√625=25
Therefore, x = 25
Answer:
A) f(x) = -3x+7
Step-by-step explanation:
f(x) is interchangeable with y when writing a function, so the functions are the same.
