2 years ago

No file answers or I will report you. Thanks!

1 answer:

3 0

You need to use SOH-CAH-TOA

Sin x = 19/32

You need to take the sin inverse of 19/32

Sin -1(19/32)

X= 36.42

Answer: M

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Solve (x - 3)^2 = 5 p please help

wel

Hello!

Let's solve !

⇒ (x - 3)² = 5

⇒ x² - 6x + 9 = 5

⇒ x² - 6x + 4 = 0

⇒ x = -(-6) ± √36 - 4(1)(4) / 2

⇒ x = 6 ± √20 / 2 = 6 ± 2√5 / 2

⇒ x = 3 ± √5

∴ The solutions are x = 3 + √5 and x = 3 - √5.

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I believe that; A function is {A) sometimes} a relation.

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2 years ago

Scores from an exam are normally distributed with a mean of 85 and a standard deviation of 5. Suppose 188 students take the exam

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The mean is $\mu=85$ and standard deviation is $\sigma=5$ . Then the variable $X\sim N(85,5)$ .

Use substitution $Z=\dfrac{X-\mu}{\sigma}=\dfrac{X-85}{5}$ , then the variable $Z\sim N(0,1)$ .

The probability $Pr(X>80)$ can be calculated in the following way:

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No file answers or I will report you. Thanks!​

No file answers or I will report you. Thanks!