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Butoxors [25]
3 years ago
5

Which of the following is the correct formula for distance?(1 point) d=(x2−x1)+(y2−y1)−−−−−−−−−−−−−−−−−√, where d is the distanc

e between points (x1,y1) and (x2,y2). d=(x2+x1)2+(y2+y1)2−−−−−−−−−−−−−−−−−−√, where d is the distance between points (x1,y1) and (x2,y2). d=(x2−x1)2+(y2−y1)2, where d is the distance between points (x1,y1) and (x2,y2). d=(x2−x1)2+(y2−y1)2−−−−−−−−−−−−−−−−−−√, where d is the distance between points (x1,y1) and
Mathematics
1 answer:
Afina-wow [57]3 years ago
6 0

Answer:

d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Step-by-step explanation:

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pishuonlain [190]
Your answer to your question is A ;)
5 0
3 years ago
What is the value of x?
Juliette [100K]

Answer:

x = 5\sqrt{7}

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

x² + 9² = 16²

x² + 81 = 256 ( subtract 81 from both sides )

x² = 175 ( take the square root of both sides )

x = \sqrt{175} = 5\sqrt{7} ≈ 13.23 units ( to 2 dec. places )

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3 years ago
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PLEASE HELP TY OMG TYTYTY
Naya [18.7K]

Answer:

-14x

Step-by-step explanation:

To put in simple terms, this question is asking what -2x+-12x is. To solve this you must add -2 and -12. So... -2+-12=-14. Then add the one "x" at the end.

7 0
3 years ago
Last Question...Please help if you can...(25 points if you answer this)
tresset_1 [31]

Answer:

  • Annie- 17 hours, Brian- 3 hours

Step-by-step explanation:

Let the number of hours Annie travelled be a, and same of Brian be b

<u>Then we have</u>

  • a + b = 20
  • a = 5b + 2

<u>Substituting a in the first equation</u>

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<u>Then finding a</u>

  • a = 20 - 3 = 17

<u>So the answer is:</u>

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5 0
3 years ago
Without solving the equation, determine the nature of the roots of x^2 - 2x - 8 = 0.
noname [10]

Answer:

two real, unequal  roots

Step-by-step explanation:

This is a quadratic equation.  The quadratic formula can be used to determine how many and what kind of roots may exist:  

Find the discriminant, which is defined as b^2 - 4ac, if ax^2 + bx + c = 0.  In this case, a = 1, b = -2 and c  = -8, so that the discriminant value is

(-2)^2 - 4(1)(-8), or 4 + 32  =  36.

Because the discriminant is real and positive, we know for certain that we have two real, unequal  roots

3 0
3 years ago
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