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Annette [7]
2 years ago
10

A bike wheel is shown. Chords I J and L K intersect at point M. The length of I M is 16 centimeters, the length of M J is 7 cent

imeters, the length of L M is 4 centimeters, and the length of M K is x. LK goes through the center of the wheel pictured. Find the diameter of the wheel. Use the intersecting chords theorem to write the equation . The diameter of the wheel is .
The first drop down is 4x=(7)(16)
The second drop down is 32
Mathematics
2 answers:
Nonamiya [84]2 years ago
6 0

Answer:

4x=(7)(16)

the diameter of the wheel is 32cm

Step-by-step explanation:

just took edg test

levacccp [35]2 years ago
3 0

Answer:

The diameter of the wheel is 32 centimeters

Step-by-step explanation:

we know that

The <u><em>intersecting chords theorem</em></u> states that the products of the lengths of the line segments on each chord are equal.

so

In this problem

(LM)(MK)=(IM)(MJ)

substitute the given values

(4)(x)=(16)(7)

solve for x

x=16(7)/4\\x=28\ cm

Remember that

LK goes through the center of the wheel

That means----> LK is a diameter

LK=4+x\\LK=4+28=32\ cm

therefore

The diameter of the wheel is 32 centimeters

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Suppose two different methods are available for eye surgery. The probability that the eye has not recovered in a month is 0.002
umka21 [38]

Answer:

0.4007

Step-by-step explanation:

Let's define the following events:

A: method A is used

B: method B is used

NR: the eye has not recovered in a month

R: the eye is recovered in a month

The probability that the eye has not recovered in a month is 0.002 if method A is used, i.e., P(NR|A) = 0.002, so P(R|A) = 0.998.

When method B is used, the probability that the eye has not recovered in a month is 0.005, i.e., P(NR|B) = 0.005, so P(R|B) = 0.995.

40% of eye surgeries are done with method A, i.e., P(A) = 0.4

60% of eye surgeries are done with method B, i.e., P(B) = 0.6

If an eye is recovered in a month after surgery is done in the hospital, what is the probability that method A was performed? We are looking for P(A|R), then, by Bayes' Formula

P(A|R) = P(R|A)P(A)/(P(R|A)P(A) + P(R|B)P(B)) = 0.998*0.4/(0.998*0.4 + 0.995*0.6) = 0.4007

4 0
2 years ago
Given f(x) and g(x) = f(k⋅x), use the graph to determine the value of k.
yan [13]

Answer:

The value of k is 3.

Step-by-step explanation:

The function f(x) passes through the points (0,4) and (-6,-2)

So the equation of the function is \frac{y-4}{4-(-2)} = \frac{x-0}{0-(-6)}

⇒ y = x + 4 ....... (1)

Again the function g(x) passes through the points (0,4) and (-2,-2).

Therefore, the equation of g(x) will be  \frac{y-4}{4-(-2)} =\frac{x-0}{0-(-2)}

⇒ y = 3x + 4

Therefore, g(x) = 3x + 4 = f(3x) {from equation (1).

So, the value of k is 3. (Answer)

3 0
2 years ago
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If four is half of five and two thirds of six is nine. what is thirty-two?
valkas [14]
Four is IV which is half of five. IX is nine which is 2 thirds of 6 so... thirty-two is 1 5/6
5 0
2 years ago
The graph of h (x) = StartAbsoluteValue x minus 10 EndAbsoluteValue + 6 is shown. On which interval is this graph increasing? (–
Andrew [12]

Answer:

(10, ∞)

Step-by-step explanation:

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2 years ago
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Jeff earned his pilot's license and flew to visit his brother 200 miles away. A headwind of 20 mph slowed down the plane's speed
lora16 [44]
<h2>Plane's speed without wind i s 117.68 mph</h2>

Step-by-step explanation:

We have speed of plane without wind is x.

Distance to brothers place = 200 miles.

A headwind of 20 mph slowed down the plane's speed on the first leg of the trip

Speed to brothers place = x - 20

We have

         Distance = Speed x Time

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A tailwind of 20 mph sped up the plane on the return trip

Speed of return trip = x + 20

We have

         Distance = Speed x Time

         200=(x+20)\times t_2\\\\t_2=\frac{200}{x+20}

The entire trip took 3.5 hours.

That is

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Plane's speed without wind i s 117.68 mph

7 0
2 years ago
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