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Dmitry_Shevchenko [17]
3 years ago
8

Perform the operation. Enter your answer in scientific notation. 7 × 102 − 5.6 × 102 =

Mathematics
1 answer:
Zarrin [17]3 years ago
3 0
The answer is 142.8
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Use the Law of Sines to find the measure of angle J to the nearest degree.
rjkz [21]
\bf \textit{Law of sines}
\\ \quad \\
\cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c}\\\\
-----------------------------\\\\
\cfrac{sin(J)}{9.1}=\cfrac{sin(97^o)}{11}\implies sin(J)=\cfrac{9.1\cdot sin(97^o)}{11}
\\\\\\
\textit{now taking }sin^{-1}\textit{ to both sides}
\\\\\\
sin^{-1}\left[ sin(J) \right]=sin^{-1}\left( \cfrac{9.1\cdot sin(97^o)}{11} \right)
\\\\\\
\measuredangle J=sin^{-1}\left( \cfrac{9.1\cdot sin(97^o)}{11} \right)
8 0
4 years ago
Can you guys tell me what does C , A, and B equal
irakobra [83]

you will need to use the law of cosines since this picture does not indicate that this is a right triangle

c^2 = a^2 + b^2 – 2ab cos C,

16^2 = 17^2+8^2 -2*17*8*cosC

256=289-272cosC

-33=-272cosC

33/272 = cosC

cos^-1 (33/272)=C  taking the inverse cos

C=83.0  (to the nearest tenth)

b^2 = a^2 + c^2 – 2ac cos B,

8^2 = 17^2 +16^2 -2*17*16cosB

64=289-544cosB

-225=-544cosB

225/544=cosB

cos^(-1) =B

B=65.5

A=180-83-65.6

A=31.4

4 0
3 years ago
Can someone help me with this one i am confused
RideAnS [48]

Answer:

Formula: (x^2 -h) +(y^2 -k)=r^2

The number on the right side of the = is the radius of the circle squared.

(h,k) is the center of the circle.

4 0
3 years ago
MULTIPLE CHOICE:
babunello [35]
Ingles C would be diagonal so your best answer be D hope this helped !!!!!!
5 0
3 years ago
−10x + 6(x − 5) = 12x − 62
tankabanditka [31]

Answer:

x=2

Step-by-step explanation:

So we have:

-10x+6(x-5)=12x-62

Distribute:

-10x+6x-30=12x-62

Combine like terms:

-4x-30=12x-62

Subtract 12x from both sides:

-16x-30=-62

Add 30 to both sides:

-16x=-32

Divide both sides by -16:

x=2

And that's our answer :)

5 0
4 years ago
Read 2 more answers
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