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Genrish500 [490]

3 years ago

10

The price of gold is often reported per ounce. At the end of 2005, this price was $513. At the end of 2015, it was $1060. By wha

t percentage did the price per ounce of gold increase? PLEASE HELP!!!!

1 answer:

cricket20 [7]3 years ago

8 0

Answer:

the answer is 106.63%.

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A store offers a 30% discount on a coat that originally sold for $120. The coat still does not sell, so the store offers another

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Step-by-step explanation:

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2 years ago

Evaluate the expression: m-3n when m=8, n=2<br><br> A. 10<br> B. 2<br> C. 14<br> D. 13

kvv77 [185]

I think it’s B. 2

8-3(2)

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3 years ago

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A 2 digit number is one more than 6 times the sum of its digits. If the digits are reversed, the new number is 9 less than the o

atroni [7]

10a+b=c,

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3 years ago

Which of the following ordered pairs is a solution of x + y = 1?

scZoUnD [109]

Answer:

idk if there are other options, but none of these would be the answer

Step-by-step explanation:

-2 + 6 = 4

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3 years ago

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2.Solve the following quadratic equations<br> i. 9x^2 - 1/16<br> ii. 2h^2 - 3h - 27

Juli2301 [7.4K]

$i)~9x^2-\dfrac{1}{16}=0\iff9x^2=\dfrac{1}{16}\iff x^2=\dfrac{1}{9\cdot16}\iff \\\\x^2=\dfrac{1}{144}\iff x=\pm\sqrt{\dfrac{1}{144}}=\pm\dfrac{1}{12}\Longrightarrow\boxed{x=\pm\dfrac{1}{12}}$

$ii)~2h^2-3h-27=0\\\\\Delta=b^2-4ac\to \Delta=(-3)^2-4\cdot2\cdot(-27)\to\Delta=9+216=225\\\\
\Longrightarrow h=\dfrac{-b\pm\sqrt{\Delta}}{2a}=\dfrac{-(-3)\pm\sqrt{225}}{2\cdot2}=\dfrac{3\pm15}{4}\\\\\begin{cases}h_1=\dfrac{3+15}{4}=\dfrac{18}{4}\iff \boxed{h_1=\dfrac{9}{2}}\\h_2=\dfrac{3-15}{4}=\dfrac{-12}{4}\iff\boxed{h_2=-3}\end{cases}$

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3 years ago