What is the best definition of an expression?

Mathematics

1 answer:

ipn [44]2 years ago

7 0

Answer:
C.
Step-by-step explanation:
Symbols is a broad category so you logically can't be wrong with that answer

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Using the law of cosines, a=2.2

Shkiper50 [21]

Answer: 81°

Explanation:

1) Law of cosines:

In a triangle with sides a, b, c whose opposite angles are, respectively, A, B and C, the law of cosines states:

b² = a² + c² - 2 (a)(c) cos (B)

2) In the triangle of the figure you have

b = 4.0
B = ?
a = 2.2
c = 3.7

⇒ (4.0)² = (2.2)² + (3.7)² - 2 (2.2) (3.7) cos(B)

⇒ 16 = 4.84 + 13.69 - 16.28cos(B)

⇒ 16.28 cos(B) = 4.84 + 13.69 - 16 = 2.53

⇒ cos(B) = 2.53 / 16.28

⇒ X = arccos(2.53 / 16.28 ) = 81.06° ≈ 81°

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4 years ago

Every year, roughly 25,000,000 kilograms of hair is cut in the united states. Each kilogram of hair contains about about 0.0002

Alla [95]

$25000000 \times 0.0002 = 5000$
$5000 \times 4 = 2000$

Answer: $2000 dollars worth of zinc is contained in cut hair in the United States every year.

Hope this helps. - M

6 0

3 years ago

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Area model for 30 ÷ 5

hammer [34]

I think it would be Six

Because 30 divided by 5 = 6

because 5 times 6 = 30

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4 years ago

What is the equation of the line described below written in slope-intercept form? The line passing through point (0,0) and paral

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