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tangare [24]
3 years ago
8

A cable company charges $50 for installation and $80 per month for service. Choose the equation that shows the total cost, c, in

dollars, where t stands for months.
A. c = 50 + 80 + t
B. c = 50t + 80
C. c = 80t + 50
D. c = (50 + 80) x t
Mathematics
2 answers:
koban [17]3 years ago
7 0

The correct option is C

Hope this helps

-AaronWiseIsBae

adoni [48]3 years ago
4 0
C
........................
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Answer:

C \approx 91.732^{\circ}

Step-by-step explanation:

(This exercise is presented in Spanish and for that reason explanation will be held in such language)

El lado restante se determina por la Ley del Coseno:

a = \sqrt{b^{2}+c^{2}-2\cdot b\cdot c \cdot \cos A}

a = \sqrt{5.79^{2}+10.4^{2}-2\cdot (5.79)\cdot (10.4)\cdot \cos 54.46^{\circ}}

a \approx 8.466

Finalmente, el angulo C se halla por medio de la misma ley:

\cos C = - \frac{c^{2}-a^{2}-b^{2}}{2\cdot a \cdot b}

\cos C = -\frac{10.4^{2}-8.466^{2}-5.79^{2}}{2\cdot (8.466)\cdot (5.79)}

\cos C = -0.030

C \approx 91.732^{\circ}

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