Plz worth 70 points

Mathematics

1 answer:

Solnce55 [7]3 years ago

7 0

Answer:

6 divided by some number y

Step-by-step explanation:

Let y be some unknown number

Given an expression 6/y

The slash sign (/) there means division. Hence the statement can be described as 6 divided by some number y

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The height of a poplar tree in feet at age t years can be modeled by the function h(t)=6+3ln(t+1) . use the model to predict the

Citrus2011 [14]

The function h(t)=6+3ln(t+1) is a logarithmic function

The height of the tree will exceed 18 feet after 53.6 years

<h3>How to determine the number of years?</h3>

The function is given as:

h(t)=6+3ln(t+1)

When the height is 18 feet, we have:

6+3ln(t+1) = 18

Subtract 6 from both sides

3ln(t+1) = 12

Divide both sides by 3

ln(t+1) = 4

Take the exponent of both sides

t + 1 = e^4

Evaluate the exponent

t + 1 = 54.6

Subtract 1 from both sides

t = 53.6

This means that the height of the tree will exceed 18 feet after 53.6 years

Read more about logarithmic functions at:

brainly.com/question/25953978

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3 years ago

Find the critical value z alpha/2 that corresponds to the given confidence level. 81%

Karolina [17]

Critical values are basically cut-off values that indicate regions where the test statistic is unlikely to lie. The required critical value is 1.31.

<h3></h3><h3>What are critical Values?</h3>

Critical values are basically cut-off values that indicate regions where the test statistic is unlikely to lie; for example, if the null hypothesis is true, the critical value is surpassed with probability alpha.

The value of α can be written as,

α = 1 - 0.81 = 0.19

$z_{\frac{\alpha}{2}} = \dfrac{0.19}{2}= 0.095$