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maxonik [38]
3 years ago
8

Christy is doing her homework. After every 15 minutes of studying, she gets up and takes a 5 minutes break. If she has 2 hours i

f homework to do, how long will it take her to finish it.
Mathematics
1 answer:
gavmur [86]3 years ago
3 0
2 hours is also 120 minutes

120/15=8

8 x 5=40

120+40=160

It will take her 160 minutes to finish, or 2 hours and 40 minutes
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x = 14  

Step-by-step explanation:

Assume your diagram is like the one below.

The intersecting secant angles theorem states, "When two secants intersect outside a circle, the measure of the angle formed is one-half the difference between the far and the near arcs."

For your diagram, that means

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Check:

\begin{array}{rcl}(3\times14 + 13) & = &\dfrac{1}{2} \left[(8\times14 + 48)^{\circ} - (5\times14 - 20)^{\circ}\right]\\\\42 + 13& = &\dfrac{1}{2}(112 + 48 - 70 + 20)\\\\55& = &\dfrac{1}{2}(110)\\\\55 & = & 55\\\end{array}

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I hope I helped.

Brainliest would be appreciated.

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