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2 years ago

A square lawn has a length of 8 feet and a width of 8 feet. Eight researchers each examine a randomly chosen

1 answer:

8 0

The best approximation to the number of seedlings that are at least 2 inches high in the entire lawn is:

D. 6,400

<h3>Total Seedlings Calculation.</h3>

To identify the total number of seedling in the entire lawn, first you must add all the seedling counted by the researchers:

Counted seedlings = 82 + 87 + 95 + 99 + 102 + 106 + 111 + 115
Counted seedlings = 697

Now, you must divide 697 in the number of regions taken by the researchers ( in this case were 8), this to obtain the average:

Average seedlings by region = $\frac{697}{8}$
Average seedlings by region = 87.125

Now, how we know, the entire lawn has a length of 8 feet and a width of 8 feet, it means 64 regions of one feet by one feet, by this reason, we multiply the average of seedlings by the whole regions in the lawn:

Number of seedlings in the lawn = 87.125 * 64
Number of seedlings in the lawn = 5576

Taking into account the average of seedlings is 5576, the best approximates of seedlings that are at least 2 inches high in the entire lawn is 6400.

More information about Approximations:

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Set up the inequality of $3.000 and $15

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Answer:

$3.00 < $15.00

Step-by-step explanation:

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$3.00 < $15

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3 years ago

1) A building is 190 feet tall and has a shadow that is also 190 feet. Determine the angle of elevation from the tip of the shad

iren2701 [21]

Answer:

C. 45

Step-by-step explanation:

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3 years ago

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aliina [53]

Answer:

$\fbox {x-intercepts : (1, 0) and (-3, 0)}$

$\fbox {Roots : x = 1, x = -3}$

Step-by-step explanation:

Given :

y = 4x² + 8x - 12

4 cancels throughout.

y = x² + 2x - 4

Solving by quadratic formula :

x = -8 ± √(8)² - 4(4)(-12) / 8
x = -8 ± √64 + 192 / 8
x = -8 ± √256 / 8
x = -8 ± 16 / 8
x = -1 ± 2
x = 1 and x = -3

∴ Hence, the x-intercepts are (1, 0) and (-3, 0). The roots of the equation are 1 and -3.

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2 years ago

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The triangle has side lengths l,m, and n. Find the length of each side and the perimeter of the triangle. (PLEASE SHOW WORK)

erastovalidia [21]

The measure of the sides is 27, 23 and 16 and the perimeter is 56 respectively

<h3>The perimeter of a triangle</h3>

The triangle is a 2 dimensional shape that has 2 sides.

Given the following sides

l = m + n - 12

n = m - 7

m = l - 1/4n

l = m + 1/4n

Substitute

m + 1/4n = m + m - 7 - 12

m + 1/4(m-7) = 2m - 19

m + 1/4m - 7/4 = 2m - 19

-m + 1/4m = -19 + 7/4

-3/4m = -19(4)+7/4

-3/4m = -69/4

-3m = -69

m = 23

Hence the value of m from the given expression is 23

n = 23 - 7

n = 16

l = 23 + 16 -12

l = 39 - 12

l = 27

n = 23 - 7

n = 16

Hence the measure of the sides is 27, 23 and 16 respectively

Perimeter = 27+23+16

Perimeter = 56

Learn more on perimeter of triangle here: brainly.com/question/24382052

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1 year ago

What does 4m^2 +5m if m=-2 equal?

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Answer:

-26

Step-by-step explanation:

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