Answer:
Step-by-step explanation:
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X=<span><span><span>−7</span>±<span>√<span>49<span><span>−11</span><span>v2</span></span></span></span></span><span>v2
but if you are telling me for solving for something else tell me</span></span>
Answer:
5
Step-by-step explanation:
3x+2-3x+7+5x
3x-3x+5x+2+7
5x+9
Coefficient is the 5 of the 5x.
Omg u can’t even figure out this? Why are you still going school
Answer:
The minimum cost of installing the cable is $156.
Step-by-step explanation:
We have an optimization problem.
We have to minimize the cost of the cable.
We will use the variable x to express the the length of cable CP and PM, accordingly to the attache picture.
The length of the cable that goes from C to P (let's call it CP) is x.
Then, the length of the cable that goes from P to M (PM) can be calcualted usign the Pithagorean theorem:
The cost function Y is:
To optimize this cost funtion we have to derive and equal to 0:
The valid solution is x=21, as x can not phisically larger than 33.
The cost then becomes: