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Jet001 [13]
2 years ago
7

5. Becca wants to edge her hexagonal garden

Mathematics
1 answer:
Ipatiy [6.2K]2 years ago
6 0

Answer:

(a)\ Perimeter = 6l

(b)\ Cost = \$36l

Step-by-step explanation:

Given

l \to sides

Solving (a): The perimeter

The shape has 6 sides; since the sides are equal, the perimeter is:

Perimeter = 6 * l

Perimeter = 6l

Solving (b): Cost of fencing

We have:

Unit\ cost = \$6/yd

So, the cost is:

Cost = Unit\ cost * Perimeter

Cost = \$6/yd * 6l

Cost = \$36l

<em>To get the actual answer, substitute the length of one side of the hexagonal in the calculated expressions</em>

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Answer:

y = 300(0.78)^x

Step-by-step explanation:

x is the number of years. y is the population after x years.

Each year, the population decreases by 22%, since 100% - 22% = 78%, and 78% = 0.78, each year, the population is 0.78 of the previous year's population.

year zero: y = 300

year 1: y = 300 * 0.78 = 300 * (0.78)^1

year 2: y = (300 * 0.78) * 0.78 = 300 * (0.78)^2

year 3: y = ((300 * 0.78) * 0.78) * 0.78 = 300 * (0.78)^3

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2 years ago
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Step-by-step explanation:

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3 years ago
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3 years ago
1. Find the distance between two
BigorU [14]

Answer:

\mathrm{D)\:}9.4\: \mathrm{units}

Step-by-step explanation:

<u>Solution 1:</u>

Notice the x coordinate of both points are equal, meaning both points are on a vertical line. The distance between two points on a vertical line is the absolute difference of their y-coordinates. The absolute difference between 4.7 and -4.7 is |4.7-4.7|=\fbox{$9.4$}.

<u>Solution 2:</u>

The distance between two points (x_1,y_1) and (x_2,y_2) is:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

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d=\sqrt{(-2.6-(-2.6))^2+(4.7-(-4.7))^2},\\d=\fbox{$9.4$}.

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