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serg [7]
3 years ago
13

the perimeter of a geometric figure is the sum of its sides. if the perimeter of the following pentagon is 42 meters, find the l

ength of each side
Mathematics
2 answers:
GrogVix [38]3 years ago
7 0

Answer:

qwtgwrg qegqaergeasrgae

Step-by-step explanation:

rwgearhgsrh

stellarik [79]3 years ago
6 0

Answer: 2.5 divided by 2 equals 1.25 so each side equals 1.25

Step-by-step explanation:

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How to make a number line from -6.2 to -9.1
nadya68 [22]

Answer:

3.1

Step-by-step explanation:

because u have to take away the - sign if it is two negatives :3

5 0
3 years ago
Read 2 more answers
HELP PLEASE BE QUICK
mart [117]

Answer:

A

Step-by-step explanation:

Using the sine ratio in the right triangle

sin40° = \frac{opposite}{hypotenuse} = \frac{AC}{AB} = \frac{AC}{7}

Multiply both sides by 7, thus

AC = 7sin40° → A

4 0
3 years ago
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Does the table show a direct proportional relationship? If so, what is the constant of proportionality? X 4 7 12 Y 32 56 96
dalvyx [7]
<h3>Answer: Yes we have a direct proportional relationship</h3><h3>constant of proportionality = 8</h3>

equation is y = 8x

=============================================

Explanation:

Divide each x and y pair like so: y/x

If we get the same result each time, then we have a direct proportion.

y/x = 32/4 = 8

y/x = 56/7 = 8

y/x = 96/12 = 8

Each time we get the same result 8, which is the constant of proportionality. The table does show a direct proportional relationship. The equation is y = 8x which is in the form y = kx. The k value is the constant of proportionality. So k = y/x.

6 0
3 years ago
Which numbers below belong to the set of the equation below
masya89 [10]
This post is not attached to anything. If you repost this with a picture I can try to answer your question.
7 0
3 years ago
Solve this problem out
Virty [35]

Option C

When (2x - 3)^2 is subtracted from 5x^2 then the result is x^2 + 12x - 9

<h3><u>Solution:</u></h3>

Given that (2x - 3)^2 is subtracted from 5x^2

We have to find the result

Subtraction is a mathematical operation that tells us the difference between two numbers.

When "a" is subtracted from "b", we write in mathematical expression as "b - a"

So (2x - 3)^2 is subtracted from 5x^2 is written mathematically as:

\rightarrow 5x^2 - (2x - 3)^2

<em><u>Expanding the above expression using algebraic identity:</u></em>

(a-b)^2 = a^2 - 2ab + b^2

\rightarrow 5x^2 - ((2x)^2 -2(2x)(3) + (3)^2)\\\\\rightarrow 5x^2 - (4x^2 - 12x + 9)

Multiplying the nnegative sign with terms inside bracket

<em><u>There are two simple rules to remember: </u></em>

  • When you multiply a negative number by a positive number then the product is always negative.
  • When you multiply two negative numbers or two positive numbers then the product is always positive.

\rightarrow 5x^2 - (4x^2 - 12x + 9)\\\\\rightarrow 5x^2 - 4x^2 + 12x -9\\\\\rightarrow x^2 + 12x - 9

Hence the result is: x^2 + 12x - 9

3 0
3 years ago
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