<h3>hello!</h3>
=============================================
First of all, let the number be u.
The product of 7 and u means you should multiply 7 times u:
Now, subtract 4:
This expression equals 17:
[Now, let's Find the Value of u]
First, add 4 to both sides:
Now, divide both sides by 7:
=======================================================
<h3>notes:-</h3>
Hope everything is clear; if you need any clarification /explanation, kindly let me know, and I will comment and/or edit my answer :)
First find their rates...
1/6, 1/2, and 1/3 now combined they will perform the job in one day if:
t/6+t/2+t/3=1 make all have a common denominator
t/6+3t/6+2t/6=6/6 which is equal to:
6t=6 so
t=1
So if they all work together they will complete the job in one day.
I assume you are being asked to solve these equations. Since there wasn't an explanation as to how you are expected to solve them, I chose to demonstrate how to use a calculator matrix function. You can find matrix calculators online. My instructions are for a TI-84
Push the blue 2nd button then push x^-1 button (it says matrix above this button in blue)
Arrow over to edit to change the dimensions of the matrix and to put in your values. You have 3 equations (3 rows) and 4 terms (4 columns) so you put a 3x4 in for the dimension and the coefficients (see images).
You use the rref option in the math column in matrix to calculate the answer.
The numbers at the end are the solutions. x = -4, y = 2, z = -1
We compute the productivity percentage change of each category using the formula:
Productivity percentage change for each category
1) Units produced:
2) Last (hours)
3) Resin (pounded)
4) Capital invested ($)
5) Energy (BTU)
2) Improvement for labour hours
From the previous computations, we see that the percentage change of the category "Last (hours)" has a negative value of -8.33%, which means that this value decreased by 8.33% with respect to the last year.
Answer
1) Productivity percentage change for each category
0. Units produced: ,0%
,
1. Last (hours): , -8.33%
,
2. Resin (pounded):, -10%
,
3. Capital invested ($): ,10%
,
4. Energy (BTU): ,-5%
2) Improvement for labour hours
The percentage change of the category "Last (hours)" has a negative value of -8.33%, which means that this value decreased by 8.33% with respect to the last year.
Answer:
About 7 percent
Step-by-step explanation:
