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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

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

Read 2 more answers

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