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juin [17]
3 years ago
11

Find the point that splits segment AB in half if point A is located at (4,3) and point B is located at

Mathematics
2 answers:
noname [10]3 years ago
8 0

Answer:

The point that splits the segment AB in half is C\left ( 1,4.5 \right )

Step-by-step explanation:

Given: Point A is located at \left ( 4,3 \right ) and point \left ( -2,6 \right )

To find: Point that splits segment AB in half.

Solution: Let C\left ( x_{3},y_{3} \right) be the point that splits AB in half.

We know that the mid point \left ( x_{3},y_{3} \right ) of a line segment joining the points \left ( x_{1},y_{1} \right ) and \left ( x_{2},y_{2} \right ) is calculated as \left (\frac{x_{1}+x_{2}}{2},\:\frac{y_{1}+y_{2}}{2} \right )

Here, x_{1}=4,\:x_{2}=-2,y_{1}=3,y_{2}=6

x_{3}=\frac{4-2}{2}

x_{3}=\frac{2}{2}

x_{3}=1

y_{3}=\frac{3+6}{2}

y_{3}=\frac{9}{2}

y_{3}=4.5

Hence, the point that splits the segment AB in half is C\left ( 1,4.5 \right )

musickatia [10]3 years ago
5 0

Answer:

(1, 4.5 )

Step-by-step explanation:

The required point is at the midpoint of AB

Use the midpoint formula

Given A(4, 3) and B(- 2, 6 ), then

midpoint = [ 0.5(4 - 2), 0.5(3 + 6) ] = (1, 4.5 )

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p - 10p = -40

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p = 40/9

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g: Consider the following game. A coin is flipped. If it lands tails we stop playing and winnothing. If it lands heads we spin a
galben [10]

Answer:

E[W] = $25 (assuming the currency is in dollars)

Var(W) = 1041.67

Step-by-step explanation:

Probability of winning first starts with the coin toss.

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Probability of that = 1/2 = 0.5

Then probability of winning any amount = 1/100 = 0.01

Total probability of winning any amount = 0.5 × 0.01 = 0.005

But expected value is given by

E(X) = Σ xᵢpᵢ

where xᵢ is each amount that could be won

pᵢ is the probability of each amount to be won and it is the same for all the possible winnings = 0.005

So,

E(W) = Σ 0.005 xᵢ

Summing from 0 to 100 (0 indicating getting a tail from the coin toss). This could be done with dome faster with an integral sign

E(W) = ∫ 0.005 x dx

Integrating from 0 to 100

E(W) = [0.005 x²/2]¹⁰⁰₀

E(W) = [0.0025 x²]¹⁰⁰₀ = 0.0025(100² - 0²) = 0.0025 × 10000 = $25

Variance is given by

Variance = Var(X) = Σxᵢ²pᵢ − μ²

μ = expected value

We calculate the expression, Σxᵢ²pᵢ which is another sum from 0 to 100

Σxᵢ²pᵢ = Σ 0.005xᵢ²

Σ 0.005 xᵢ² = ∫ 0.005 x² dx

Integrating from 0 to 100

∫ 0.005 x² dx = [0.005 x³/3]¹⁰⁰₀ = [0.1667x³]¹⁰⁰₀ = 0.1667(100³ - 0³) = 1666.67

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2 years ago
An EPA contractor needs to test the concentration of a substance in ten samples of the ground water. Seventy samples were
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Answer:

Systematic sampling

Step-by-step explanation:

An EPA contractor needing to test the concentration of a substance in ten samples out seventy samples provided form a single source at regular time intervals.

For the contractor to effectively carry out the testing he has to employ a Non-probability system of sampling which is called Systematic sampling, because in systematic sampling we can assume the population size (x ) which in this case is 70 and the sample size( n ) to be 10

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7 0
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A jewelry designer is making a pendant. The pendant will be a circular dis (center O) with a circular hold cut out of it, as sho
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Answer:

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Step-by-step explanation:

Given:

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Then, we find out the area of the circular hold cut out of the bigger one, its radius is a haft of the radius of the bigger circle = 35/2 = 17.5

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=>  the area of the pendant = 3846.5  - 961.6  =2884.8 millimeters squared

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