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postnew [5]
2 years ago
10

Find the perimeter of the polygon?

Mathematics
2 answers:
Black_prince [1.1K]2 years ago
7 0

Answer:

A-15

Perimeter means- you add all sides up OR multiply.....

polygon has 5 sides and one side equals 3....

you can do 3+3+3+3+3

to find your answer or simply multiply 3*5

Your answer will be 3+3+3+3+3 or 3*5= 15

astra-53 [7]2 years ago
6 0

Answer:

answer is option a)15in

Step-by-step explanation:

we know that a polygon has all sides equal

so

5sides(pentagon has 5 sides) ×3inch

=15inches

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5a-8=8+a

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mote1985 [20]

Answer:

c. f(x)=x(x+2)(x-1)(x-4)

Step-by-step explanation:

Where it says "as x goes to negative infinity" then "y goes to infinity" (that's the part with the infinity symbols) that means the graph is going up at it's left end. This curve is a quartic (4th degree) which means its left and right ends are kind of parabola-ish, but the middle is not the neat u-ish, v-ish shape of a parabola; it's more like a wonky, noodle-ish wavy affair. Anyway, LIKE a parabola when the beginning of the equation is positive, the two ends point up. That's what's happening here and so we can eliminate b. and d. as potential answers.

Since -2, 0, 1, 4 are zeros (which are solutions...and also x-intercepts) we can find the factors of the function.

If x = -2

ADD 2 to both sides.

x + 2 = 0

This means (x+2) is a factor.

This is enough info to select answer c. but let's verify the other factors.

If x = 1

SUBTRACT 1 from both sides.

x - 1 = 0

Thus means (x - 1) is a factor.

If x = 4

SUBTRACT 4 from both sides.

x - 4 = 0

(x - 4) is a factor.

You can see c. has all these factors as well as x, because x=0 already, so x is a factor too.

I think of this as a working backwards problem, bc usually you have to factor and solve. This one, you have solutions (which are zeros and x-intercepts) and work backwards to find factors and multiply them together to find the function.

5 0
2 years ago
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