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victus00 [196]
2 years ago
8

John pays $0.25 per minute plus $7 per month for a long distance phone plan. Which expression represents this scenario. Then fin

d the cost if John makes a 15 minute long distance phone call?
A
expression 0.25 + 7m cost $105.25
B
expression 0.25m + 7 cost=$3.75
C
expression 0.25m + 7 cost=$10.75
D
expression 7.25m cost = $108.75
Mathematics
1 answer:
anyanavicka [17]2 years ago
5 0

Answer:

b

Step-by-step explanation:

because you have to add them

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We have been given that in triangle ABC angle A=45 angle B =40 and a=7. We are asked to find the equation that we can use to solve for 'f'.

We have two angles and opposite sides to these angles.

We will use Law of Sines to solve our given problem.

\frac{a}{\sin(A)}=\frac{b}{\sin(B)}=\frac{c}{\sin(C)}, where a, b and c are opposite sides corresponding to angles A, B, and C respectively.

The angle opposite to side b is 40 degrees and angle opposite to side a is 45 degrees.

Upon substituting these values in Law of Sines, we will get:

\frac{7}{\sin(45^{\circ})}=\frac{b}{\sin(40^{\circ})}

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