One cellular phone carrier charges $26.50 a month and $0.25 a minute for local calls. another carrier charges $14.50 a month and $0.25 a minute for local calls. for how many minutes is the cost of the plans the same?

The cost of plans is same for 120 minutes.

Step-by-step explanation:

Given:

One cellular phone charge = $26.50 a month and $0.15 per minute.

Another cellular charges = $14.50 a month and $0.25 per minute.

Let the number of minutes at which both plans are same be = minutes

For minutes the plan charges are as following:

1)

2)

So, we equate the above expressions as the plans are same.

Multiplying both sides by 100.

Subtracting both sides by 1450.

Subtracting both sides by

Dividing both sides by 10.

∴

The cost of plans is same for 120 minutes.

honesty mood

step-by-step explanation:

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°