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3 years ago

3 -m= -9. 4 Hello hello

Mathematics

1 answer:

Dovator [93]3 years ago

8 0

Answer:

-12

Step-by-step explanation:

(3/4)m=-9

m=(-9/1)/(3/4)

m=(-9/1)(4/3)

m=-36/3

m=-12

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In the following calculation, which part should be calculated first? 3 + (2 * 4) - 5 / 2

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A person on the top of a tall building looks through his binoculars at his friend that is 300 ft away from the building on the g

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Find an equation for the nth term of the arithmetic sequence.<br> -1, 2, 5, 8, ...

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The pyramid shown has a square base that is 1212 centimeters on each side. The slant height is 1818 centimeters. What is the sur

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Answer : Surface area of pyramid = 4406832 square cm.

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3 years ago

1. Write out the law of cosines and find the hypotenuse of triangle with 2 sides lengths equal to three and the included angle m

LUCKY_DIMON [66]

Answer:

1.) $\sqrt{13.341}$ ≈ 3.652

2.) I would say something about how the A in front of cos in the equation would change to 90, rather than stay 75 (in the equation for the step by step), but it would be easier to just use the Pythagorean theorem.

Step-by-step explanation:

I think we may have the same class so hopefully this helps:

1.) $a^2 = b^2 + c^2 - 2bccosA$ --> law of cosines formula.

$a^2 = 3^2 + 3^2 - 2(3)(3)cos(75)$ --> plugged in numbers; when you draw the triangle, the included angle would be A, and the opposite side would be a. B and b, and C and c are opposite each other. In this case, a is the hypotenuse.

$a^2 = 18 - 18cos75$ --> in between steps.

$a^2 = 13.341$ --> more simplifying.

$a(hypotenuse) = \sqrt{13.341} or 3.652$ --> answer

2.) This one is just an explanation: The 75 in the equation is the given angle, which is a. If this changes, it would just change in the equation too. And obviously, if it's 90 degrees, you can just use Pythagorean theorem a^2+b^2=c^2.

Good luck! :)

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