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sleet_krkn [62]
3 years ago
15

Erik tried to evaluate 2 x 7,000 step by step.

Mathematics
2 answers:
lyudmila [28]3 years ago
5 0
That’s good to know.
ElenaW [278]3 years ago
4 0
First dktvc fdgvhfcc Hecht dc
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HELP Use either law of sines or law of cosine. Need help on this problem! show work please!​
Marina86 [1]

Answer: x = 15.035677095729 approximately

Round this however you need to.

=================================================

Explanation:

I'm assuming you want to find the value of x, which your diagram is showing to be the length of segment QR.

If so, then we'll need to find the measure of angle Q first. Using the law of sines, we get the following:

sin(Q)/q = sin(R)/r

sin(Q)/PR = sin(R)/PQ

sin(Q)/13 = sin(85)/19

sin(Q) = 13*sin(85)/19

sin(Q) = 0.6816068987

Q = arcsin(0.6816068987) ... or ... Q = 180-arcsin(0.6816068987)

Q = 42.9693397461 ... or ... Q = 137.0306602539

These values are approximate.

----------------

Now if Q = 42.9693397461 approximately, then angle P is

P = 180-Q-R

P = 180-42.9693397461-85

P = 52.0306602539

Similarly, if Q = 137.0306602539 approximately, then,

P = 180-Q-R

P = 180-137.0306602539-85

P = -42.0306602539

A negative angle is not possible, so we'll ignore Q = 137.0306602539

----------------

The only possible value of angle P is approximately P = 52.0306602539

Let's apply the law of sines again to find side p, aka segment QR

sin(P)/p = sin(R)/r

sin(P)/QR = sin(R)/PQ

sin(52.0306602539)/x = sin(85)/19

19*sin(52.0306602539) = x*sin(85)

19*sin(52.0306602539)/sin(85) = x

x = 15.035677095729

This value is approximate.

Round this value however you need to.

4 0
2 years ago
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Please help! Will give brainliest!<br> Simplify. <img src="https://tex.z-dn.net/?f=%283a%5E%7B2%7D%2A5a%5E%7B2%7D%29" id="TexFor
sergejj [24]

Answer: 8a

Step-by-step explanation:

8 0
2 years ago
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AveGali [126]

Answer:

4/5

Step-by-step explanation:

I THINK

8 0
3 years ago
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1. In a class of 30 students, 5 made A's on the first test. If a student is selected at random to do a
ExtremeBDS [4]

Step-by-step explanation:

State you answer in the simplest form

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3 years ago
3=g/-4-5 <br> solve for g
devlian [24]

Answer:

4

Step-by-step explanation:

so first you write down the problem and substitute the g by 3 after that you subtract

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