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3 years ago

A coffee table is on sale for 20% off the original price of $115.

Mathematics

2 answers:

Murljashka [212]3 years ago

6 0

Answer:

The answer would be around $98.90

Angelina_Jolie [31]3 years ago

4 0

The answer would be $98.90

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Hii! I need some help, would anyone mind helping me?

Kisachek [45]

Step-by-step explanation:

${x}^{2} - 14x - 25 {y}^{2} + 100y = 76$

Factor by grouping,

$( {x}^{2} - 14x) - (25 {y}^{2} - 100y) = 76$

Complete the square, with the x variables,

$( {x}^{2} - 14x + 49) - (25 {y}^{2} - 100y) = 125$

Factor out 25 for the y variables

$( {x}^{2} - 14x + 49) - 25( {y}^{2} - 4y) = 125$

Complete the square

$( {x}^{2} - 14x + 49) - 25( {y}^{2} - 4y + 4) = 25$

Simplify the perfect square trinomial

$(x - 7) {}^{2} - 25(y - 2) {}^{2} = 25$

Make the right side be 1 so divide everything by 25.

$\frac{(x - 7) {}^{2} }{25} - (y - 2) {}^{2} = 1$

Here our center is (7,2).

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2 years ago

Solve these equations

Alex_Xolod [135]

Could u take the picture from a different angle

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2 years ago

A college basketball game is 40 minutes long. Derrick’s favorite player participated for 60% of last week’s game. How many minut

alexandr1967 [171]

Answer:

24 minutes

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

A water sprinkler sends water out in a circular pattern. How many feet away from the sprinkler can it spread water if the area f

myrzilka [38]

Answer:

The sprinkler can spread water 18 feet away.

Step-by-step explanation:

We are given the following in the question:

Area formed by watering pattern = 1,017.36 square feet

We have to find the how far the sprinkler spread the water.

The sprinkler covers a circular area. We need to find the radius of this circular area to find the how far the sprinkler spread the water.

Area of circle =

$A = \pi r^2$

where r is the radius of the circle.

Putting values, we get,

$1017.36 = 3.14 r^2\\\\r^2 = \dfrac{1017.36}{3.14}\\\\r^2 = 324\\r = \sqrt{324} = 18\text{ feet}$

Thus, the sprinkler can spread water 18 feet away.

6 0

3 years ago

Read 2 more answers

How far can you run in 5/7 of an hour if you run at a speed of 8 2/5 mph?

Mazyrski [523]

Answer: you can run 6 miles

explanation: 8 2/5 divided by seven = 1.2 1.2x5 = 6

5 0

3 years ago