Step-by-step explanation: multiply both sides of the equation by 4. multiply 7 and 4 to get 28. add 28 and 1 to get 29. add 3 to both sides and add 29 and 3 to get 32. divide both sides by 8 then divide 32 by 8 to get 4.

8 0

2 years ago

What is 8 + 0 in additive identity property of zero

IRISSAK [1]

Answer:

0 property

Step-by-step explanation:

I think so

5 0

3 years ago

hexagon is equal to the area of an equilateral triangle whose perimeter is 36 inches. Find the length of a side of the regular h

Vikentia [17]

$Perimter\ of\ equilateral\ triangle\ =36\\ a- \ side\ of\ triangle\\ 36=3a\ |:3\\ a=12\\\\ Area\ of\ equilateral\ triangle:\\ A=\frac{a^2\sqrt{3}}{4}\\ A=\frac{12^2\sqrt{3}}{4}\\ A=\frac{144\sqrt{3}}{4}=36\sqrt3 \\\\ Hegagon\ can\ be\ divided\ into\ 6\ equilateral\ small\ triangles.\\Area\ of\ one\ of\ them: A_s=\frac{A}{6}=\frac{36\sqrt3}{6}=6\sqrt{3}\\ s-side\ of\ equilateral\ =\ side\ of\ small\ triangle\\ A_s=\frac{s^2\sqrt{3}}{4}=6\sqrt{3}\ |*4 \\ s^2\sqrt3=24\sqrt3\ |\sqrt3\\ s^2=24\\ s=\sqrt{24}$ $\sqrt{24}=\sqrt{4*6}=2\sqrt6\\\\
Side\ of\ hexagon\ equals\ 2\sqrt6\ inches$

7 0

3 years ago

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