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3 years ago

7

two mechanic worked on a car. the first mechanic worked for 19 hours, and the second mechanic worked for 15 hours. together they

charged a total of $2550. what was the rate charged per hour by each mechanic if the sim of the two rates was $205 per hour?

1 answer:

Georgia [21]3 years ago

4 0

Answer:

d

Step-by-step explanation:

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In right triangle DEF, it is known that Cos D = (12/13) and Cos F = (5/13). If FD = 39, then DE = ? Hint, draw the right triangl

AnnyKZ [126]

Answer:

The value of the line segment $ED$ is 36.

Step-by-step explanation:

The hypotenuse represents the longest side in the right triangle. In this case, FD represents the hypotenuse as it is a multiple of 13. Based on the trigonometric relations described in the statements, we get the following relationships by definition of cosines:

$\cos D = \frac{ED}{FD}$ (1)

$\cos F = \frac{EF}{FD}$ (2)

If we know that $\cos D = \frac{12}{13}$ and $FD = 39$ , then the length of the line segment $ED$ is:

$ED = FD\cdot \cos D$

$ED = 39\cdot \left(\frac{12}{13} \right)$

$ED = 36$

The value of the line segment $ED$ is 36.

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3 years ago

Write an explicit formula for the sequence 7, 2, –3, –8, –13, find the 14th term

Ilia_Sergeevich [38]

The 14th term is equal to -44.

y = 12 - 5x

The sequence can be represented by this function.

Each term is being subtracted by 5.

Using this function we can find the 14th time.

y = 12 - 5(14)

y = 12 - 56

y = -44

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Marizza181 [45]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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