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zhuklara [117]
3 years ago
8

Which area formula or formulas show(s) a joint variation?

Mathematics
1 answer:
Allushta [10]3 years ago
5 0
D. is right sure 

hope helped 
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Solve the triangle that has a=4.6, B=19°, A=92° (picture provided)
kolezko [41]

Answer:

Option b

Step-by-step explanation:

To solve this problem use the law of the sines.

We have 2 angles of the triangle and one of the sides.

a = 4.6\\B = 19\°\\A = 92\°\\C = 180 -A - B\\C = 180 - 92 - 19\\C = 69\°

The law of the sines is:

\frac{sin(A)}{a} = \frac{sin(B)}{b} = \frac{sin(C)}{c}

Then:

\frac{sin(92)}{4.6} = \frac{sin(19)}{b}\\\\b = \frac{sin(19)}{\frac{sin(92)}{4.6}}\\\\b = 1.5

\frac{sin(B)}{b} = \frac{sin(C)}{c}\\\\\frac{sin(19)}{1.5} = \frac{sin(69)}{c}\\\\c = \frac{sin(69)}{\frac{sin(19)}{1.5}}\\\\c = 4.30

8 0
3 years ago
PLease help please i need helo on this
ankoles [38]

Answer:

315

Step-by-step explanation:

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5 0
3 years ago
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Find two acute angles that satisfy the equation sin(2x + 7) = cos(x + 23). Check that your answers make
Vera_Pavlovna [14]

Answer:

The smaller angle is 43 and the larger angle is 47

Step-by-step explanation:

3 0
3 years ago
The rise and span for a roof are shown The pitch of a roof is the ratio of the rise to the half-span. If the rise is 8 ft and th
Amiraneli [1.4K]
The pitch in simplest form is 4/15
8 0
3 years ago
Jamar is four times as old as Josh. In 20 years he will be twice as old as Josh. How old is Jamar?
Juliette [100K]
Simultaneous equations
Jamar=J
Josh=j
4J=j
20+J=2j
Then
4J=j
-4 (J)=-4(2j-20)
So
0=-7j+80
7j=80
j=80÷7
5 0
3 years ago
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