3 years ago

What is the value of k in the equation 5k-2k=12

Mathematics

1 answer:

kenny6666 [7]3 years ago

3 0

Value of k=4
5(4)=20
2(4)=8
20-8=12

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Evgen [1.6K]

this should help I have it step

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3 years ago

Ben has a cell phone plan that provides 200 free minutes each month for a flat rate of $39. For any minutes over 200, Ben is cha

faltersainse [42]

Answer:

$\left\{\begin{matrix}39 & x\leq 200\\ 39+(x-200)\times 0.35 & x>200\end{matrix}\right.$

Step-by-step explanation:

We are given that Ben has a cell phone plan that provides 200 free minutes each month for a flat rate of $39.

We are also told that For any minutes over 200, Ben is charged $0.35 per minute.

let x be the minutes used each month

So, if $x\leq 200$

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If $x>200$

So, Ben is charged $0.35 per minute

So, when $x>200$

So, charge = $39+(x-200)\times 0.35$

So, the piecewise functions accurately represents charges based on Ben's cell phone :

$\left\{\begin{matrix}39 & x\leq 200\\ 39+(x-200)\times 0.35 & x>200\end{matrix}\right.$

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3 years ago

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lesya692 [45]

Download photo math for equations like this, it will also give you it step by step :)

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3 years ago

Lainey bought a set of 20 markers for $6 dollar sign, 6. What is the cost of 1 marker?

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Hello!

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3 years ago

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konstantin123 [22]

Answer:

The answer to your question is: (4, -1)

Step-by-step explanation:

M = midpoint (-1, 1)

A = (-6, 3)

B = (x, y)

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x = 2xm - x1

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x = -2 + 6

x = 4

$ym = \frac{y1 + y }{2}$

y = 2ym - y1

y = 2(1) - 3

y = 2 - 3

y = -1

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3 years ago