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3 years ago

6

In South Australia, an average of 16 400 000 packets of chips were eaten each day. After a campaign by the health department thi

s amount reduced by 3.9 million.
How many packets of crisps were eaten after the campaign?

1 answer:

Dmitrij [34]3 years ago

5 0

16,400,000 - 3,900,000 = 12,500,000

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Black_prince [1.1K]

$\large\text{Hey there!}$

$\mathsf{The\ sphere\ formula\ is: \dfrac{4}{3}\pi\times r^3}$

$\mathsf{Now, that\ we\ have\ our\ formula\ let's\ solve\ for\ the\ equation}$

$\mathsf{So,\ first\ \bf{\underline{DIVIDE}}}\mathsf{\ both\ of\ your\ sides\ by\ \pi}$

$\mathsf{\dfrac{4}{3}r^3=972}\\\\\rightarrow\ \mathsf{r^3=972\times\dfrac{3}{4}}\\\\\mathsf{972\times\dfrac{3}{4}=729}\\\\\mathsf{\rightarrow\ r^3=729}$

$\mathsf{\sqrt[\mathsf{3}]{\mathsf{729}} = 81}\\\\\mathsf{\sqrt{81}=81\div9=9}\\\\\mathsf{\sqrt{81}=9}\\\\\mathsf{r=9}$

$\boxed{\boxed{\mathsf{\bf{Answer: \boxed{\mathsf{radius = \bf{9}}}}}}}\checkmark$

$\large\text{Good luck on your assignment and enjoy your day!}$

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3 years ago

A rectangular sheet of metal has an area of 112 square inches. Its perimeter is 44 inches. What are the dimensions of the sheet?

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A) w = 112 / L then substituting this into B)
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L = 8

Double Check
Width = 14 Length = 8
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14*8= 112
Correct!!!

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3 years ago