Mathematics: Your long distance telephone provider offers two plans. plan a has a monthly fee of $15 and $0.25 per minute. plan b has a monthly fee of $20 and $0.5 per minute. write and solve an equation to find the number of minutes that you must talk to have the same cost for each of the plans.

Your long distance telephone provider offers two plans.

Ответ:

bellabrill

26.05.2020

They would have to talk for 20 minutes for the costs to be the same.(sorry if it's a bit messy I did it on my phone)

Your long distance telephone provider offers two plans. plan a has a monthly fee of $15 and $0.25 pe

Your long distance telephone provider offers two plans. plan a has a monthly fee of $15 and $0.25 pe

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Ответ:

rjsimpson73

10.02.2023

Mathematics

Step-by-step explanation:

$(x^2-y^2)^2\\\\\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\=(x^2)^2-2(x^2)(y^2)+(y^2)^2\\\\\text{use}\ (a^n)^m=a^{nm}\\\\=x^4-2x^2y^2+y^2\\-----------------------------$

$\text{Other solution}\\\\(x^2-y^2)^2\\\\\text{use}\ a^2-b^2=(a-b)(a+b)\\\\= [(x-y)(x+y)]^2\\\\\text{use}\ (ab)^n=a^nb^n\\\\=(x-y)^2(x+y)^2$

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Your long distance telephone provider offers two plans. plan a has a monthly fee of $15 and $0.25 per minute. plan b has a monthly fee of $20 and $0.5 per minute. write and solve an equation to find the number of minutes that you must talk to have the same cost for each of the plans.

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