3 years ago

The purity of gold is listed in karats. If a necklace is 75% what karat is it

Mathematics

1 answer:

MrMuchimi3 years ago

5 0

3/4 is gold the rest is not r

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3 years ago

What is a logarithmic quotient?

umka2103 [35]

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3 years ago

Sam just purchased a new car. After his employee discount and the sale that the dealership applied to the original

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D 19,905

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3 years ago

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xenn [34]

Answer:

$\large \boxed{\text{23 s}}$

Step-by-step explanation:

Jaime is at point A and wants to get across the river to Point B.

They must head upstream towards Point C.

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∆ABC is a right triangle, so

$\begin{array}{rcl}AB^{2} + BC^{2} & = & AC^{2} \\AB^{2} +10^{2} & = & 12^{2} \\AB^{2}+100& = & 144 \\AB^{2}& = & 44\\AB & = & \sqrt{44}\\& = & 2\sqrt{11}\\& \approx &\textbf{6.633 m/s}\\\end{array}$

2. Calculate the time to cross the river

$\text{Time} = \text{150 m} \times \dfrac{\text{1 s}}{\text{6.633 m}} \approx \textbf{23 s}\\\\\text{It will take $\large \boxed{\textbf{23 s}}$ to cross the river.}$