3 years ago

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:

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

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

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3 years ago

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ankoles [38]

Answer:

315

Step-by-step explanation:

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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:

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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

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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

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3 years ago