Nine and twenty hundredths as a decimal

Mathematics

1 answer:

Novosadov [1.4K]3 years ago

8 0

Answer:

0.920

I think this is right

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How do you express sin x + cos x in terms of sine only?

frez [133]

Answer:

$\sin x + \sqrt{1-\sin^2x}$

Step-by-step explanation:

Given: sin x + cos x

To change the given trigonometry expression in term of sine only.

Trigonometry identity:-

$\sin^2x+\cos^2x=1$
$\cos x=\sqrt{1-\sin^2x}$

Expression: $\sin x+\cos x$

We get rid of cos x from expression and write as sine form.

Expression: $\sin x + \sqrt{1-\sin^2x}$ $\because \cos x=\sqrt{1-\sin^2x}$

Hence, The final expression is only sine function.

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4 years ago

PT=7x-24 and TQ=6x-2, Find PT.

Nastasia [14]

We can't find what PT exactly is because we don't know TQ or x. However, we can find PT in terms of TQ!

Multiply the second equation by seven sixths to get:

$\frac{7TQ}{6}=7x- \frac{7}{3}$

Subtract $\frac{65}{3}$ from both sides to get:

$\frac{7TQ}{6}- \frac{65}{3}=7x-24$

Substituting PT for 7x-24, we see that:

$PT= \frac{7TQ}{6} - \frac{65}{3}$ , which is our answer.

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3 years ago

For the fair, the organizers ordered

zhannawk [14.2K]

Each roll of tickets = 100 tickets

32 * 100 = 3200

3,200 tickets were ordered in all.

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4 years ago

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Whet is 2y+14x-7x+9y

matrenka [14]