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3 years ago

I just need to know how to calculate

Mathematics

1 answer:

Anton [14]3 years ago

8 0

Answer:

$-a^{2}$

Step-by-step explanation:

$\frac{-1}{a^{-2} } = \frac{-1}{\frac{1}{a^{2} } } = -1 * \frac{a^{2} }{1} = -a^{2}$

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If M is the midpoint of LN = 27.8 , find the length of MN

Mars2501 [29]

Midpoint is almost like half.

So, I am assuming that LN is one line and M represents the point that can divide L and N evenly.

27.8 / 2

13.9 = half of the line.

Since MN would be the center to the end of one line, it would equal 13.9.

Have a nice day!

7 0

4 years ago

Miguel quiere entrenar para la carrera solidaria de verano en uno de los dos parques que tiene cerca de casa. Su plan es correr

kondor19780726 [428]

Answer:

The square park is more convenient.

Explanation:

The translation of the question is:

Miguel wants to train for the summer solidarity race in one of the two parks that he has close to home. His plan is to run about 10 km each day and he wants to do an exact number of laps around the park to always start and end at the entrance. Since he has not quite decided between the square and the rectangular park, he decides to do some calculations to see which one suits him best.

Square park: 423 meters each side

Rectangular park: 673 meters measures the base and 218 meters the height

<h2>Solution</h2>

1. Calculate the perimeter of the square park

The perimeter of a square is the sum of the four side lengths. Since they are equal it is:

Perimeter = 4 × side lenght

Perimeter = 4× 423m = 1,692 m

2. Calculate how many times 1,692m is in 10 km

10 km is 10,000 m. Then, divide 10,000 by 1,692 m:

Number of laps = 10,000m / 1,692m ≈ 5.91 laps

3. Calculate the perimeter of the rectangular park

Perimeter = 2×base + 2×height

Perimeter = 2×673m + 2×218m = 1,782m

4. Calculate how many times 1,782 is in 10km

Number of laps = 10,000m / 1,782m ≈ 5.61 laps

Then, since the number 5.91 is closer to an integer number than 5.61, you conclude that the square park is more conventient, because by running 6 laps around the square park the number of kilometers run will be closer to 10 km than with any number of complete laps in the rectangular park.

3 0

3 years ago

As an investment, a couple bought a house for 2.7 million. Two years later sold it for $5 million what was their profit

sdas [7]

5,000,000-2,700,000=2,300,000.

The couple made a 2.3 million dollar profit

6 0

3 years ago

7.SP.L.

erik [133]

Answer:

a) two

b) S = {Orange, Purple}

c) 50%

d) 50%

Step-by-step explanation:

When a marble is drawn from the jar, there are two possible outcomes. Either the marble will be orange or it will be purple.

A sample space is a set of all possible outcomes of an event. Thus, the sample space in this case will be:

Sample Space = {Orange, Purple}

The probability of an event is given as the number of favorable outcomes divided by the number of total outcomes.

Therefore,

Probability of selecting orange marble = P(Orange) = 1/2

P(Orange) = 0.5 = 50%

Probability of selecting purple marble = P(Orange) = 1/2

P(purple) = 0.5 = 50%

8 0

4 years ago

Raphael paid $167 for a camera during a 75% off sale. what was the cameras regular price?

mihalych1998 [28]

As the camera was at 25% of the original price, this means you've got to multiply this number to by 4 to get the original price.
167*4= 668
Therefore, the camera's regular price is $668
Hope this helps :)

6 0

3 years ago

Read 2 more answers