Mathematics, 18.04.2020 14:36 esme2583

Please help, system of equasions

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Answer from: lexysmith1722

x = 4, y = 4

Step-by-step explanation:

x+y=8

The total number of caps or shirts needed will be equal to the total amount of people in the system.

6x+3y=36

We can multiply the amount of caps and shirts by their price to get the total price needed.

$y=8-x\\6x+3(8-x)=36\\6x+24-3x=36\\3x=12\\x=4$

We can substitute one equation into another to solve for x.

Now we put our x value back into the other equation to get y

$4+y=8\\y=4$

Now we substitute both of our values into our second equation to verify that they are correct

6(4)+3(4)=36

So correct!

Answer from: kimberlylove387

Your answer would be 6x + 3y = 36

We can find this because each shirt costs $6, so the total cost for shirts will be 6 multiplied by however many we buy, and since the number of shirts is represented by x, this gives us 6x.

The cost for each cap is $3, so the total cost for caps would be 3 multiplied the number of caps, which is 3y.

We want the overall cost to come out as $36 exactly, so we know that the total cost of shirts plus the total cost of caps must equal $36.

I hope this helps!

Answer from: Quest

then, the surface area of the sphere shown in the image is: 256π sq. units!

step-by-step explanation:

the lateral surface area of a sphere is 2πrh where h=2r.

then:

surface area = 4πr^2.

in this case, r=8 units ⇒ surface area = 4π(8 units)^2. = 256π sq. units!

then, the surface area of the sphere shown in the image is: 256π sq. units!

What is the surface area of the sphere shown below with a radius of 8 ?

Answer from: Quest

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v

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