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3 years ago

How to know whether to use sin or cos in physics?

1 answer:

3 0

Sine and cosine (and trigonometric functions in general) are used extensively in physics, and neither really has priority - it depends on the particular problem you're working on. Is there a particular problem that prompted your question?

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Zahra completed a 5-kilometer race in 40 minutes. If she were able to keep the same pace, how many kilometers could she run in 7

Valentin [98]

Answer:

Step-by-step explanation:

you can set up a proportion for it (i included a picture of it)

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3 years ago

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There are 40 coins in a roll of quarters. The change machine at the local arcade holds 320 rolls of quarters. How many quarters

erica [24]

Answer:

C, 12,800

Step-by-step explanation:

40 x 320 = 12,800

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3 years ago

How do you graph y = -5x

Damm [24]

There you go. The file's down there.

7 0

3 years ago

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20 POINTS!!! PLEASE HELP

pogonyaev

The logarithm of 10 to base 10 is 1

<h3>How to determine the logarithm?</h3>

The given parameters are:

Base = 10
Number = 10

So, the logarithm expression can be represented as:

$\log_{10}10$

The law of logarithm states that:

$\log_{x}x = 1$

The above means that;

When the base and the number are the same, the logarithm is 1

So, we have:

$\log_{10}10 = 1$

Hence, the logarithmic value is 1

Read more about logarithm at:

brainly.com/question/20785664

#SPJ1

7 0

2 years ago

If s(x)=x-7 and t(x)=4x^2-x+3 which expression is equivalent to (txs)(x)?

gogolik [260]

For this case we have by definition that:

$(f * g) (x) = f (x) * g (x)$

In this case we must find $(t * s) (x),$ so:

( $(t * s) (x) = t (x) * s (x) = (4x ^ 2-x + 3) * (x-7) =$

We must apply distributive property that states that:

$(a + b) (c + d) = ac + ad + bc + bd$

So:

$(4x ^ 2-x + 3) * (x-7) = 4x ^ 3-28x ^ 2-x ^ 2 + 7x + 3x-21 = 4x ^ 3-29x ^ 2 + 10x-21$

Answer:

$4x^3-29x^2+10x-21$

7 0

4 years ago