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ella [17]
3 years ago
14

Simplify 3y – (y + 2x) + x. 2y + 3x 4y – x 2y – x 4y – 3x

Mathematics
1 answer:
mash [69]3 years ago
5 0

Use the distributive property to eliminate parentheses:

... = 3y -y -2x +x

Collect terms:

... = y(3 -1) +x(-2 +1)

... = 2y -x

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Two ships leave a harbor at
natima [27]

Answer:

  30√3 ≈ 51.96 miles

Step-by-step explanation:

The distance between the two ships can be found using the Law of Cosines, or using your knowledge of the side relationships in special triangles.

__

Each ship is traveling at 10 mph, so after 3 hours will have traveled 30 miles.

The triangle OS1S2 formed by the harbor and the two ship locations is an isosceles triangle with base angles of 30°. Each half of OS1S2 is a 30-60-90 triangle whose longer leg is √3 times half the hypotenuse. The sum of those two "longer legs" is the distance between the ships.

The distance between ships is 2×15√3 = 30√3 ≈ 51.96 miles.

_____

<em>Additional comment</em>

If you prefer to use the Law of Cosines, you are looking for the length of the side opposite the 120° angle in a triangle with sides of 30 miles.

  c² = 30² +30² -2·30·30·cos(120°) = 30²(2-2·(-0.5)) = 3·30²

  c = 30√3 . . . . . take the square root (miles)

8 0
2 years ago
Canny plz help me out​
Lostsunrise [7]

Answer: D) x ≥ -6

Step-by-step explanation:

It is greater than or equal to negative six because the circle is black, and not white with a white outline. The reason it's greater than is because it's going to the right, and going into greater numbers.

Hope this helps. HAVE A BLESSED AND WONDERFUL DAY! As well as a great Valentines Day! :-)  

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3 0
4 years ago
Read 2 more answers
Which number is not divisible by either of the numbers three and five?
Dovator [93]

all prime nubers except 3 and 5..

3 0
4 years ago
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Five more than a number is 25. What is this number?
Alexxx [7]

Answer:

5

Step-by-step explanation:

let the number be a.

5a=25

divide both sides by 5

5a=25

5divide by 5a is a.

5divided by 25 is 5

therefore,a=5.

the number is 5

5 0
3 years ago
Marlee spins the spinner below 30 times. A success occurs when the spinner lands on a 5 or 6. What is the probability of a succe
dlinn [17]

We are going to assume that the spinner has 11 parts.

Answer:

Probability of success = 18.17%

Probability of failure = 81.83%

Step-by-step explanation:

Please kindly check the attached file for explanation.

3 0
3 years ago
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