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3 years ago

In the figure below, two secants are drawn to a circle from exterior point U. Suppose that UW=45, UZ=30, and UX=22.5. Find UY

Mathematics

1 answer:

Alex777 [14]3 years ago

3 0

UY = 25

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NeverReady batteries has engineered a newer, longer-lasting AAA battery. The company claims this battery has an average life spa

melomori [17]

Answer:

the probability is 0.0202

Step-by-step explanation:

The computation is shown below:

Given that

The Average life span = 17 hours

Standard deviation = 0.8 hours

Sample = 30 batteries

Sample mean = 16.7 hours

Now based on the above information

The probability is

$P (\bar x \leq 16.7) = P (\frac{\bar x - \mu}{(\frac{\sigma }{\sqrt{n} } )} \leq (\frac{16.7 - \mu}{(\frac{\sigma }{\sqrt{n} } )}\\\\= P(z\leq \frac{16.7-17}{\frac{0.8}{\sqrt{30} } } )\\\\= P(\leq -2.05)\\\\= 0.0202$

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3 years ago

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aliya0001 [1]

I beliee the answer is C

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3 years ago

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Kamila [148]

$\bf \begin{cases} f(x)=4x+1\\ g(x)=x^2-5\\[-0.5em] \hrulefill\\ (f\circ g)(4)=f(~~g(4)~~) \end{cases} \\\\[-0.35em] ~\dotfill\\\\ g(4)=(4)^2-5\implies g(4)=16-5\implies \boxed{g(4)=11} \\\\\\ f(~~g(4)~~)\implies f(11)\implies f(11)=4(11)+1\implies \blacktriangleright f(11)=45\blacktriangleleft$

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3 years ago

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deff fn [24]

Answer:

x = 13.6 in

Step-by-step explanation:

The arc x is calculated as

x = circumference of circle × fraction of circle

= 2πr × $\frac{0.8}{2\pi }$ ( cancel the 2π on numerator/ denominator )

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4 years ago

Solve the system of linear equations by elimination. 2x – y=0 3x – 2y = -3

devlian [24]

Answer:

Point form: (3,6)

Equation form: x=3, y=6

Step-by-step explanation:

Add the equations in order to solve for the first variable. Then plug this value into the other equations in order to solve for the remaining variables.

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4 years ago

In the figure below, two secants are drawn to a circle from exterior point U. Suppose that UW=45, UZ=30, and UX=22.5. Find UY​

In the figure below, two secants are drawn to a circle from exterior point U. Suppose that UW=45, UZ=30, and UX=22.5. Find UY