Hey can u please help i will give brainliy if u get it right :)

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

5 0

9514 1404 393

Answer:

400 minutes

Step-by-step explanation:

The cost of the first plan is ...

A = 14 + 0.15m . . . . . . . . where m is the number of minutes used

The cost of the second plan is ...

B = 30 + 0.11m

The costs will be equal when ...

14 +0.15m = 30 +0.11m

0.04m = 16 . . . . . . . . . . . . . subtract 14+0.11m from both sides

m = 400 . . . . . . . . . . . . . . . divide by 0.04

The plans will have the same cost for 400 minutes of calls.

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Please helppppppp!!!!!!!!!!!!!!!!!!!!!!!!!!!

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So here, ABCD is being inscribed in a circle, so ABCD is a cyclic quadrilateral (as inscribed in a circle) also, there exists a property of cyclic quadrilateral, i.e, the sum of opposite angles of a cyclic quadrilateral is 180°, so we can just write the following equation using this :

${:\implies \quad \sf y^{\circ}+83^{\circ}=180^{\circ}}$