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3 years ago

If rhodium cost $6,050 per ounce how much does it cost per gram?

1 answer:

5 0

Answer: With such a limited supply, rhodium doesn't come cheap. It is the most expensive of all precious metals, currently trading at $2,725 an ounce. (To give you a better idea of its cost, that's over twice as expensive as gold and 154 times more than silver.)

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Find the percent increase or decrease from Monday to Tuesday.

nekit [7.7K]

Answer:

the answer is -75% that mean 75% decrease

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3 years ago

Prove it. this question is from trigonometry

konstantin123 [22]

Answer:

See below for step-by-step proof.

Step-by-step explanation:

$\textsf{Given expression}:$

$\cos^6 \theta+\sin^6 \theta$

$\textsf{Apply exponent rule} \quad a^{bc}=(a^b)^c:$

$\implies (\cos^2 \theta)^3+(\sin^2 \theta)^3$

$\textsf{Use the identity}\quad a^3+b^3=(a+b)^3-3ab(a+b):$

$\implies (\cos^2 \theta+\sin^2 \theta)^3-3 \cos^2 \theta\sin^2 \theta (\cos^2 \theta+\sin^2 \theta)$

$\textsf{Use the identity}\quad \sin^2 \theta + \cos^2 \theta=1:$

$\implies (1)^3-3 \cos^2 \theta\sin^2 \theta (1)$

$\implies 1-3 \cos^2 \theta\sin^2 \theta$

$\implies 1-3 (\cos \theta\sin \theta)^2$

$\textsf{Use the identity}\quad \sin 2 \theta=2 \sin \theta \cos \theta \implies \dfrac{1}{2}\sin 2 \theta= \sin \theta \cos \theta:$

$\implies 1-3 \left( \dfrac{1}{2}\sin 2 \theta\right)^2$

$\implies 1-\dfrac{3}{4} \sin^2 2 \theta$

$\textsf{Use the identity}\quad \sin^2 2\theta + \cos^2 2\theta=1 \implies \sin^2 2\theta=1-\cos^2 2\theta$

$\implies 1-\dfrac{3}{4} \left(1-\cos^2 2 \theta\right)$

$\implies 1-\dfrac{3}{4} +\dfrac{3}{4}\cos^2 2 \theta$

$\implies \dfrac{1}{4} +\dfrac{3}{4}\cos^2 2 \theta$

$\textsf{Factor out }\dfrac{1}{4}:$

$\implies \dfrac{1}{4}\left(1+3\cos^2 2 \theta\right)$

$\textsf{Use the identity}\quad \cos (4 \theta)=2 \cos^2 2\theta - 1 \implies \cos^2 2 \theta=\dfrac{1}{2}\cos 4 \theta+\dfrac{1}{2}:$

$\implies \dfrac{1}{4}\left(1+3\left(\dfrac{1}{2}\cos 4 \theta+\dfrac{1}{2}\right)\right)$

$\implies \dfrac{1}{4}\left(1+\dfrac{3}{2}\cos 4 \theta+\dfrac{3}{2}\right)$

$\implies \dfrac{1}{4}\left(\dfrac{5}{2}+\dfrac{3}{2}\cos 4 \theta\right)$

$\implies \dfrac{1}{4} \cdot \dfrac{1}{2}\left(5+3\cos 4 \theta\right)$

$\implies \dfrac{1}{8}\left(5+3\cos 4 \theta\right)$

6 0

2 years ago

What is the value of g^-1(9)

mars1129 [50]

Hi there!

• g(x) = 6x - 3

Then,
if g(x) = y :-

y = 6x - 3

⇒6x = y + 3

⇒x = $\dfrac{\text{y} + 3}{6}$

According to th' question :-

g⁻¹(x) = $\dfrac{\text{x} + 3}{6}$

g⁻¹(9) = $\dfrac{9 + 3}{6}$

g⁻¹(9) = $\dfrac{12}{6}$

g⁻¹(9) = 2

Hence,
The required answer is g⁻¹(9) = 2

~ Hope it helps!

3 0

3 years ago

Read 2 more answers

Marley borrows $500 to pay for a new computer she will pay back the loan in full in 30 days after she receives her paycheck this

gulaghasi [49]

Answer:

single payment of a loan

Step-by-step explanation:

4 0

4 years ago

A toy rocket is launched from the ground. The graph below shows the height of the rocket over time, x, At what height, y, does t

Fofino [41]

Answer:

33 seconds i believe, im pretty sure its all about multiplication

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3 years ago

If rhodium cost $6,050 per ounce how much does it cost per gram?​

If rhodium cost $6,050 per ounce how much does it cost per gram?