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3 years ago

Please help me i dont understand

Mathematics

2 answers:

mr_godi [17]3 years ago

8 0

A = 2.76 x 10^12 = 27600000000
w = 4.6 x 10^5 = 460000
w x l = A
2760000000000/460000 = 6000000
l = 6000000
(w x 2) + (l x 2) = perimeter
((4.6 x 10^5) x 2) + ((6.0 x 10^6) x 2) = 12920000

ANSWER: perimeter = 129.2 x 10^5

maks197457 [2]3 years ago

4 0

The perimeter is 5.52000092 x 10^12
The numbers are in scientific notation.

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Answer:

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Step-by-step explanation:

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3 0

3 years ago

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motikmotik

Answer:

Option C: $\sqrt{\textbf{121}}$

Step-by-step explanation:

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7 0

3 years ago

Diego is solving the equation x^2-12x = 21

uysha [10]

Answer:

The solutions to the quadratic equations will be:

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Step-by-step explanation:

Given the expression

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$x^2-12x+\left(-6\right)^2=21+\left(-6\right)^2$

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$x^2-12x+\left(-6\right)^2=57$

Apply perfect square formula: (a-b)² = a²-2ab+b²

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so the expression becomes

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$\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}$

solve

$x-6=\sqrt{57}$

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$x-6+6=\sqrt{57}+6$

Simplify

$x=\sqrt{57}+6$

also solving

$x-6=-\sqrt{57}$

add 6 to both sides

$x-6+6=-\sqrt{57}+6$

Simplify

$x=-\sqrt{57}+6$

Therefore, the solutions to the quadratic equation will be:

$x=\sqrt{57}+6,\:x=-\sqrt{57}+6$

5 0

3 years ago

Subject:Mathematics

posledela

Answer:

x=28°

Step-by-step explanation:

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3 0

2 years ago

Read 2 more answers