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Reika [66]
3 years ago
14

Find the length of segment CD with points C(2,2) and D (-1,8)

Mathematics
1 answer:
kumpel [21]3 years ago
6 0

Answer:

D

Step-by-step explanation:

Calculate the length using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

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

CD = \sqrt{(-1-2)^2+(8-2)^2}

     = \sqrt{(-3)^2+6^2}

     = \sqrt{9+36} = \sqrt{45} ≈ 6.7 → D

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Answer:

A.

Step-by-step explanation:

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= (1/3)(35.3)

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3 years ago
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What property would you use first to solve 1/2x-6=10
NISA [10]

I don't know what you mean by property. Do you mean like, commutative, distributive, etc?

but, if this is what you mean:

to solve this:

The operation here is subtraction. Do the inverse. So, add 6 to both sides of the equation

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3 years ago
An object with initial temperature 120° F is submerged in large tank of water whose temperature is
nikitadnepr [17]

Answer:

F(t)=Ts+(T0-Ts)^{e-0.2t

Step-by-step explanation:

<u>Newton's law of cooling states </u>

"<em>that the temperature of a body changes at a rate proportional to the difference in temperature between the body and its surroundings"</em>

Newton's Law of Cooling is given by the formula

F(t)=Ts+(T0-Ts)^{e-kt

Where

F( t )  is the temperature of the object at a given time  t

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3 years ago
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Troyanec [42]

Answer:

A = 144 cm²

Step-by-step explanation:

Let the side of the square be x. Using Pythagoras theorem for square,

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The area of the square is given by :

A = side²

Put values in the formula.

A = 12²

A = 144 cm²

So, the area of the square is equal 144 cm².

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2 years ago
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