Answer:
80 questions
Step-by-step explanation:
Given that a student received an 85% grade on his test, and that he got 12 questions wrong:
We could infer that if he answered all of the test questions correctly, then he would have received a perfect score of 100% on his test.
Since he got 12 questions wrong, then it means that those wrong answers account for the 15% out of receiving a 100% grade on his test (or: 100% - 85% = 15%).
Let x = number of test questions
In order to find how many questions were on his test:
12 questions = 15% (or 0.15) of the total number of questions (x)
12 questions = 0.15x
Divide both sides by 0.15 to isolate x:
x = 80 questions
Therefore, there were 80 questions on his test.
60 pedazos.
15 pedazos.
45 pedazos.
Answer:
30 pedazos
Step-by-step explanation:
(15/2)/(1/4)
= (15*4)/(2*1)
= 60/2
= 30
5x:8 = 7:2
Calculate the value of x.
Answer:
Step-by-step explanation:
Answer:
x = 28/5 = 5.600
Answer: Here's my answer
Step-by-step explanation:
The objective function given, "c = xy", represents the cost (c) associated with the operation of machine X and machine Y, where x represents the number of hours machine X runs and y represents the number of hours machine Y runs.
To understand the objective function, let's break it down step by step:
1. "c" represents the cost associated with the operation of the machines. This could include expenses such as maintenance, energy consumption, or labor costs.
2. "x" represents the number of hours machine X runs. This indicates the duration for which machine X is in operation.
3. "y" represents the number of hours machine Y runs. This indicates the duration for which machine Y is in operation.
4. The objective function "c = xy" states that the cost (c) is calculated by multiplying the number of hours machine X runs (x) by the number of hours machine Y runs (y). This means that the total cost is proportional to the product of the hours of operation for both machines.
For example, if machine X runs for 5 hours (x = 5) and machine Y runs for 3 hours (y = 3), the cost (c) would be calculated as follows:
c = xy
c = 5 * 3
c = 15
In this case, the cost (c) would be 15, representing the total cost associated with the operation of both machines for the given hours.
Therefore, the objective function "c = xy" calculates the cost based on the product of the hours of operation for machine X and machine Y.
I’m confused on how the answer ended up being 2 square root 53
Answer:
decimal form
14.560
Step-by-step explanation:
that was right, maybe you just needed it in decimal form.