1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
garri49 [273]
3 years ago
12

Cd has an endpoint at (2, -1) and a midpoint at (8, 3). which measure is closest to the length of cd

Mathematics
1 answer:
stepladder [879]3 years ago
8 0

Answer:

4\sqrt{13}

Step-by-step explanation:

The length of CD will be twice the distance from the midpoint to the endpoint

To calculate the length use the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (2, - 1) and (x₂, y₂ ) = (8, 3)

d = 2 × \sqrt{(8-2)^2+(3+1)^2}

  = 2 × \sqrt{6^2+4^2}

  = 2 × \sqrt{52}

  = 2 × \sqrt{4(13)}

  = 2 × 2\sqrt{13} = 4\sqrt{13} ← exact length

You might be interested in
Simplify this expression. If it is already simplified, then write it as it is.<br> 2p – 2 – 9 - 9p
MaRussiya [10]

Answer:

- 7p - 11

Step-by-step explanation:

2p  - 2  - 9 - 9p \\  =  - 7p - 11

3 0
3 years ago
Tiffany has a spinner that is split into four equal sections: red, blue, green, and yellow. Tiffany spun the spinner 680 times.
Lyrx [107]
Probability of getting Green is 1/4
1/4 ×680 = 170
so choose nearest answer will 187
4 0
3 years ago
How to solve 45y to the second power plus 15y minus 10 ?
Lerok [7]

Answer:

Either y =\frac{-2}{3} or, y =\frac{1}{3}

Step-by-step explanation:

We have to solve the following quadratic equation  

45y² + 15y - 10 =0

Now, dividing both sides with 5 we get, 9y² + 3y -2 =0

Hence, to solve the above equation we have to factorize the left-hand part of the equation.

So, 9y² + 3y - 2 =0

⇒ 9y² +6y -3y -2 =0

⇒ (3y +2) (3y -1 ) =0

⇒ Either (3y +2) =0 or (3y -1) =0

⇒ Either y =\frac{-2}{3} or, y =\frac{1}{3} (Answer)

4 0
3 years ago
Given y inversely proportional to x and x = 3 for y = 4, what is xify= 12?<br> 01<br> 9<br> 16
kari74 [83]

Answer:

16

Step-by-step explanation:

4 0
3 years ago
How do you write 8.08 × 104 in standard form?
Goryan [66]

Answer:

840.32

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • 4x to the 2nd power minus 12
    10·1 answer
  • A 25-foot ladder leans against a wall. The base of the ladder is 15 feet from the bottom of the wall. How far up the wall does t
    7·2 answers
  • Equivalent expression P+1/4p
    15·1 answer
  • Using the linear equation 4x–3y=12, express:
    6·1 answer
  • Mr Elvis divided his money into the ratio 2 to 6 between Derek and Shan Eric of the smaller amount of 420. how much did Shan rec
    9·1 answer
  • Which is the last operation performed when evaluating (8 minus 2 x) squared + 4 for x = 3?
    9·1 answer
  • The function f(t)=16t2 represents the distance (in feet) a dropped object falls in t seconds. The function g(t)=s0 represents th
    14·1 answer
  • 6 degrees above normal​
    10·1 answer
  • PLEASE HELPPPPPPPPPPPPPPPPPPPPPPPPPPP
    7·2 answers
  • O. A store pays $10 for a blanket. The<br> mark up is 40%. What do they sell it for?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!