3 years ago

What is the value of the this expression when a=5 and k=-2

Mathematics

1 answer:

Marizza181 [45]3 years ago

7 0

Answer:

Where is the equation

Step-by-step explanation:

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Triangle Q M N is shown. The length of Q M is 18, the length of M N is 17, and the length of Q N is 20. Law of cosines: a2 = b2

kvasek [131]

Answer:

53°

Step-by-step explanation:

17² = 18² + 20² - 2(18)(20) cos Q

289 = 324 + 400 - 720 cos Q

289 = 724 - 720 cos Q

-435 = -720 cos Q

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3 years ago

Find y in the line through (4,y) and (7,2) has a slope of 6

Alenkasestr [34]

Answer:

The value of y is -16.

Step-by-step explanation:

To find the missing coordinate, we can use the slope equation and plug in all known values.

m(slope) = (y2 - y1)/(x2 - x1)

6 = (y - 2)/(4 - 7)

6 = (y - 2)/-3

Now we can solve using cross multiplication.

y - 2 = -3*6

y - 2 = -18

y = -16

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3 years ago

40 points! Brainliest for most helpful answer!

telo118 [61]

Answer:

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Step-by-step explanation:

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Answer:the length 7

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Sonbull [250]

Answer:

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