There are different kinds of audio instrument. The speaker in the audio was en una tienda de ropa.
<h3>What are sound instruments?</h3>
All musical instruments are known to bring about sound. This makes matter to vibrate. The vibrations are known to bring about sound waves moving through the air.
A lot of musical instruments often uses resonance to make or increase the sound waves and make the sounds too be more louder. The voice in the audio is said to be that of en una tienda de ropa
Learn more about audio instrument from
brainly.com/question/1520067
The angle of the triangle ABC from smallest to largest are approximately 22°, 27° and 131°.
The sides of the triangle are as follows;
AB = 20
BC = 12
AC = 10
Let's find ∠A using cosine rule,
a² = b² + c² - 2bc cos A
cos A = b² + c² - a² / 2bc
Therefore,
cos A = 10² + 20² - 12² / 2 × 10 × 20
cos A = 100 + 400 - 144 / 400
cos A = 356 / 400
cos A = 0.89
A = cos⁻¹ 0.89
A = 27.1267531173
∠A ≈ 27°
Using sine rule let's find ∠B
12 / sin 27 = 10 / sin B
cross multiply
12 sin B = 10 sin 27
sin B = 10 sin 27 / 12
sin B = 10 × 0.45399049974 / 12
sin B = 4.5399049974 / 12
B = sin⁻¹ 0.37832541645
B = 22.2299936087
∠B = 22°
Using sum of triangle theorem let's find ∠C
∠C = 180 - 27 - 22
∠C = 131°
The angles from smallest to largest are approximately 22°, 27° and 131°.
learn more on triangle here: brainly.com/question/12913110?referrer=searchResults
<h3>
Answer:</h3>
60 days
<h3>
Explanation:</h3>
Half-life is the amount of time it takes half of a substance to decay away.
Guess and Check
One method for solving half-life problems like this is to guess and check. To do this, we can continue to divide 475mg by 2 until we get to 30mg.
- 475 ÷ 2 = 237.5
- 237.5 ÷ 2 = 118.75
- 118.75 ÷ 2 = 59.375
- 59.375 ÷ 2 = 29.6875
As seen here, it takes approximately 4 half-lives for this sample of Ra-225 to decay to 30mg. Now, we can multiply 4 by the length of the half-life, 15 days.
Fractions
Another way to solve this is to use fractions.
- 16 is equivalent to
.
This means that it takes 4 half-lives for 475mg to decay to 30mg. Using the same method above, we can tell that 4 half-lives are 60 days.
Important Note
In this question, I rounded occasionally. So, not all of the values are exact, but they are all very close.
The land of the coastal plain to be softer than the land of the piedmont coastline because the terrain is low-lying.
The Piedmont is a region in the eastern United States that stretches for about 600 miles (950 km) from New Jersey to Alabama in the north and from the Atlantic Coastal Plain in the south (east).
The Coastal Plain gradually increases in elevation as it moves more inland from the "Pine Barrens," although it seldom reaches over 500 feet above sea level. The soil in this area is composed of sand, clay, and other elements. The peaches, pecans, and peanuts grown in this bountiful region, along with many other agricultural goods, are world-famous.
"Pine Barrens" region of the state is unfit for agriculture even now. On the property, pine trees are largely grown for grazing and for the production of turpentine, pulp, and other products.
To learn more about Piedmont and Coastal Plain, refer from
brainly.com/question/28193341
#SPJ4
