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Fiesta28 [93]
2 years ago
9

What is the perimeter of the smaller pentagon

Mathematics
1 answer:
Mice21 [21]2 years ago
6 0

5 cm since a pentagon has 5 sides just multiply one side by 5

1x5=5

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Please help! 20 points thanks :)
Irina18 [472]
The answer is D (5/4). We go up by 5 and to the side we go 4 in order to get between the points (0,8) and (-4,3). We know it’s rise over run. The rise is 5 because we go up by 5 and the run is 4 because we go to the side 4 times. By looking from left to right at the line, we see it’s a going to be positive. This means the answer is 5/4.
7 0
2 years ago
Read 2 more answers
I need help. With this p
iogann1982 [59]

a_n=a_1+(n-1)d - the formula of n-th term of an arithmetic sequence.

We have:

a_5=12.4;\ a_9=22.4

a_9-a_5=(9-5)d\to4d=22.4-12.4\\\\4d=10\ \ \ \ |:4\\\\d=2.5

a_{31}=a_9+(31-9)d\to a_{31}=22.4+22\cdot2.5=77.4

Answer: C. 77.4

6 0
3 years ago
Simplify each sum or difference. State any restrictions on the variables.
Dvinal [7]

Answer:

2(d-2)/(2d+1) or 1 - 5/(2d+1)

d can not be -½

Step-by-step explanation:

(d-3)/(2d+1) + (d-1)/(2d+1)

Lcm: 2d+1

(d-3+d-1)/(2d+1)

= (2d-4)/(2d+1)

= 2(d-2)/(2d+1)

If further simplification required:

= (2d-4)/(2d+1)

= (2d+1-5)/(2d+1)

= (2d+1)/(2d+1) - 5/(2d+1)

= 1 - 5/(2d+1)

2d+1 = 0

When d = -½

So d can not be -½ because when the denominator becomes 0, fraction becomes undefined

7 0
2 years ago
The area of a square is found by squaring one of its sides, (A = s2). A certain square has an area of z2 + 18z + 81. Factor the
masya89 [10]

Here is your answer

Given area is

z^2 + 18z + 81

= z^2 + 2× z × 9 + 9^2

[using (a+b)^2= a^2 + 2ab + b^2], we get

= (z+9)^2

we know that area of a square is represented by side^2.

So, here

Side of square is

z+9

HOPE IT IS USEFUL

7 0
2 years ago
Read 2 more answers
PLEASE HELP ASAP!!! MARKING BRAINLIEST!!!
saul85 [17]

Answer:

got here just in time phew :3

Step-by-step explanation:

3 0
2 years ago
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