NEED HELP PLEASE ITS URGENT thanks- BRAINLIST only for correct answers love :) Thank you!!

The forestry service personnel at a national forest are estimating the average height of the trees in the forest. They measure t

meriva

Answer:

The correct answer is A. 45.2

Step-by-step explanation:

1. Let's review all the information provided for solving this question:

Number of trees of the sample = 31

Number of trees of the sample with a height between 60 and 65 feet tall height = 3

Number of trees of the sample with a height between 65 and 70 feet tall height = 3

Number of trees of the sample with a height between 70 and 75 feet tall height = 8

Number of trees of the sample with a height between 75 and 80 feet tall height = 10

Number of trees of the sample with a height between 80 and 85 feet tall height = 5

Number of trees of the sample with a height between 85 and 90 feet tall height = 2

2. Let's calculate the percentage of the trees that are less than 75 feet tall:

Percentage of the trees less than 75 feet tall = [(Number of trees of the sample with a height between 60 and 65 feet tall + Number of trees of the sample with a height between 65 and 70 feet tall + Number of trees of the sample with a height between 70 and 75 feet tall)/Number of the trees of the sample] * 100

Replacing with the real values, we have:

Percentage of the trees less than 75 feet tall = [(3 + 3 + 8)/31] * 100

Percentage of the trees less than 75 feet tall = [(14)/31] * 100

Percentage of the trees less than 75 feet tall = 0.451613 * 100

Percentage of the trees less than 75 feet tall = 45.1613% = 45.2% (Rounding to one decimal place)

The correct answer is A. 45.2

6 0

4 years ago

Graph y = - 1/2r-6 AND GIVE ME THE RIGHT ANSWER.

Nana76 [90]

Hello!

Are you in algebra?

Here is how to solve and graph.

First, look for the slope and y-intercept of your equation.

y = - 1/2r-6

The y intercept is, -6

The slope is -1/2

the variable r, is another way to represent x, as it is just a variable.

now that you have all that information, plot -6 on the graph, -6 should be on the y- axis.

from that point, move down one space and move right two space. complete this step multiple times.

Now please look at the photo, and Here's what the graph should look like.

8 0

3 years ago

Please simplify –z -10y +2 +15y – 2z -10

Sladkaya [172]

Answer:

25y-3z-8

Step-by-step explanation:

happy to help

5 0

3 years ago

Read 2 more answers

The data depicted in a histogram show approximately a normal distribution if the distribution

Slav-nsk [51]

Answer:

bunches up in the middle and tapers off symmetrically at either end

Step-by-step explanation:

By definition a normal distribution is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Because the data towards the mean is more frequent in occurrence, the graph peaks at the center. The data occurs less frequently at the tail ends of the distribution, thus the shape of the distribution is a bell shape that peaks at the center and tapers off towards the tails. The key characteristic is that the distribution of data is perfectly symmetrical.

This is why the answer is:

The data depicted in a histogram show approximately a normal distribution if the distribution bunches up in the middle and tapers off symmetrically at either end.

4 0

4 years ago

in solving the equation for x to distribute a minus 4 on one side of the equation what needs to be done on the other side of the

IrinaVladis [17]

The distributive property is a simplification rule that does not change the value of an expression. Nothing need be done to the other side of the equation.

q = -4(3+x)
q = -4*3 -4*x . . . . . the -4 is distributed. The right side has not changed value.

6 0

3 years ago

Read 2 more answers