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2 years ago

What is the permimeter of a 4’ square

Mathematics

2 answers:

galben [10]2 years ago

6 0

Answer:

16'

Step-by-step explanation:

4 equal sides

4+4+4+4=16

zheka24 [161]2 years ago

4 0

Answer: Permimeter of a 4’ square is 16.

Step-by-step explanation:

given that:

• length = 4

∴ Perimeter of Square = 4 x length

⇒ P = 4 × 4

⇒ P = 16 units ...answer...

hope that helps...

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FinnZ [79.3K]

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3 years ago

Prove that H c G is a normal subgroup if and only if every left coset is a right coset, i.e., aH = Ha for all a e G

Kaylis [27]

$\Rightarrow$

Suppose first that $H\subset G$ is a normal subgroup. Then by definition we must have for all $a\in H$ , $xax^{-1} \in H$ for every $x\in G$ . Let $a\in G$ and choose $(ab)\in aH$ ( $b\in H$ ). By hypothesis we have $aba^{-1} =abbb^{-1}a^{-1}=(ab)b(ab)^{-1} \in H$ , i.e. $aba^{-1}=c$ for some $c\in H$ , thus $ab=ca \in Ha$ . So we have $aH\subset Ha$ . You can prove $Ha\subset aH$ in the same way.

$\Leftarrow$

Suppose $aH=Ha$ for all $a\in G$ . Let $h\in H$ , we have to prove $aha^{-1} \in H$ for every $a\in G$ . So, let $a\in G$ . We have that $ha^{-1} =a^{-1}h'$ for some $h'\in H$ (by the hypothesis). hence we have $aha^{-1}=h' \in H$ . Because $a$ was chosen arbitrarily we have the desired .

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3 years ago

HELP PLEASE I NEED ANSWER ASAP!

mixas84 [53]

Answer:

86+18 $\sqrt{2}$

Step-by-step explanation:

Use the properties of 45-45-90 triangles to get a side length of 18 for the 2 legs of the isosceles triangle. Then add 43+18, which is the shorter length of the rectangle, +25, which is the longer edge, +18 $\sqrt{2}$ . The answer is now 86+18 $\sqrt{2}$ .

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2 years ago

Read 2 more answers

The hypotenuse is 8 inches. The side opposite angle X is 7 inches. Angle X = ?

Alex73 [517]

Step-by-step explanation:

In the picture.

The answer is <em><u>X = 61°</u></em>