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Sveta_85 [38]
3 years ago
15

the original price of a DVD player was reduced by $45.50. the sale price was $165.90. Solve the following equation to solve the

equation to determine the original price of the player that is represented by x : x - 45.50 = 165.90.
Mathematics
1 answer:
professor190 [17]3 years ago
7 0

Answer:

211.40

Step-by-step explanation:


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Need step-by-step. Please answer correctly. This determines what grade I get. I will mark brainliest to the first person who ans
tatyana61 [14]

Answer:

  3√3

Step-by-step explanation:

For the problem shown here, your answer 3√3 is correct.

When there is a radical by itself in the denominator, you multiply numerator and denominator by a radical that results in the product being rational. For a square root, that will usually be the same square root:

  \dfrac{9}{\sqrt{3}}=\dfrac{9}{\sqrt{3}}\cdot\dfrac{\sqrt{3}}{\sqrt{3}}=\dfrac{9\sqrt{3}}{3}=\boxed{3\sqrt{3}}

__

If the problem has a sum in the denominator involving a square root, then you multiply numerator and denominator by the conjugate of that sum (the sum with the sign changed). This uses the special product "difference of squares" to eliminate the radical term.

<u>Example</u>:

  \dfrac{9}{2-\sqrt{3}}=\dfrac{9}{2-\sqrt{3}}\cdot\dfrac{2+\sqrt{3}}{2+\sqrt{3}}=\dfrac{9(2+\sqrt{3})}{2^2-(\sqrt{3})^2}=\dfrac{18+9\sqrt{3}}{4-3}\\\\=\boxed{18+9\sqrt{3}}

__

It is easy to demonstrate that none of the offered choices for this problem has the same value as 9/√3.

9/√3 ≈ 5.196. Offered choices have values of about 4.798, 1.732, 6.681, 23.196 -- none even close.

Please discuss this question with your teacher.

3 0
2 years ago
One day at 3:00 a.m., the temperature was -13°F in Kodiak, Alaska. At 10:00 a.m., the temperature was 22°F. What was the average
suter [353]
-13 to 0 = 13 degrees changed. 0 to 22 is 22 degrees changed. 13 + 22 = 35 degree change.

10-3 = 7.

So there was a change of 35 degrees across 7 hours

35/7 = 5 degrees per hour.
6 0
3 years ago
Perry surveyed 60 students at her school and found that 0.45 of the students she surveyed said their favorite class is math. Ano
BabaBlast [244]
the answer is 27 students
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3 years ago
Draw the two lines y = 2x + 2/3, and y = 2x + 1/3. They are parallel a
Nonamiya [84]

Answer:

Two line are perpendicular when they are at right angles to each other.

The red line is perpendicular to the blue line in each of these examples:

Perpendicular Example

Step-by-step ex;planation:

6 0
2 years ago
To get to the reunion, we drove a total of 504 miles in 9 hours. Find our average rate of speed. (Distance is the product of rat
ANEK [815]
Hello!

We drove a total of 504 miles in 9 hours. How I solved this equation is by dividing 504 by 9. 504 / 9 = 56, as the answer. You could also solve this just by adding how many times 9 can go into 504, but that will be longer for the same result.
Enjoy.

Brainliest please?
6 0
3 years ago
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