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elixir [45]
3 years ago
15

Can someone help me ?? :)

Mathematics
1 answer:
LekaFEV [45]3 years ago
7 0
C is the answer you are looking for.
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HELP ASAP!!!! Please!!!! Will give brainliest if CORRECT! :)
Kruka [31]
The answer is the initial cost is 4500
7 0
3 years ago
In triangle ABC, a = 3, b = 5, and c = 7. Find the approximate value of angle A.
OLEGan [10]

9514 1404 393

Answer:

  a)  22°

Step-by-step explanation:

Side 'a' is the shortest side, so angle A will be the smallest angle. Its value must be less than 60°, eliminating the last two answer choices. The actual value can be found from the Law of Cosines.

  a² = b² +c² -2bc·cos(A)

  cos(A) = (b² +c² -a²)/(2bc) = (5² +7² -3²)/(2(5)(7)) = 65/70

  A = arccos(65/70) ≈ 21.7868°

Angle A is about 22°.

8 0
3 years ago
Use the rules of exponents to evaluate or simplify.write without negative exponents. 1/4^-2=?
Talja [164]

9514 1404 393

Answer:

  4² = 16

Step-by-step explanation:

The applicable rule of exponents is ...

  1/a^-b = a^b

So, ...

 \dfrac{1}{4^{-2}}=\boxed{4^2 = 16}

_____

<em>Additional comment</em>

If you were to evaluate this using the Order of Operations, you would evaluate the exponent first:

  1/4^-2 = 1/(1/16)

Then, you would do the division.

 1/(1/16) = 16

__

We sometimes find it convenient to manipulate exponential terms to the form with the smallest positive exponents before we begin the evaluation.

5 0
3 years ago
What is the value of the expression? (-3)(-4)(-5)
nekit [7.7K]

Answer:

-60

Step-by-step explanation:

-3 x -4 x -5

12 x -5

-60

negative x negative x negative= negative

4 0
3 years ago
Can someone help me with this? Please and thank you!
sergiy2304 [10]

Answer:

She should find the squares between 4.2 and 4.3

Step-by-step explanation:

The square of 4.2 was too low and the square for 4.3 was too high so the answer is between the two.

5 0
3 years ago
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