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klio [65]
3 years ago
12

What is the domain of y = cos θ?

Mathematics
1 answer:
Tpy6a [65]3 years ago
7 0

Domain are all the possible x values of a function. When you look at a cosine graph you can see that it goes on into infinity in the x or horizontal direction. This means that all x values are included in cosine. Because of this the domain is:

all real numbers

or

(-∞,∞)

^^^ It can be written both ways

Hope this helped! Let me know if there is anything else I can do!

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A box of cereal stated there are 90 calories in a 3/4 cup serving. How many calories are there in 4 cups of the cereal
Elenna [48]

Answer:

Step-by-step explanation:

Lets call the calories in one cup 'x'

so (3/4)x=90

Solving for x:

x=(90)/(3/4)

x=120

Now for 4 cups:

(4)(120)=?

480 calories in 4 cups of cereal

3 0
3 years ago
Divide. 2/7 divided by 1/3
Allushta [10]

Answer:

The answer to the question provided is \frac{6}{7}.

7 0
3 years ago
An object is launched at 29.4 meters per
Lerok [7]

Answer:

The reasonable domain for the scenario is option 'a';

a) [0, 7]  

Step-by-step explanation:

For the projectile motion of the object, we are given;

The speed at which the object is launched, v = 29.4 meters per second

The height of the platform from which the object is launched, h = 34.3 meter

The equation for the height of the object as a function of time 'x' is given as follows;

f(x) = -4.9·x² + 29.4·x + 34.3

The domain for the scenario, is given by the possible values of 'x' for the function, which is found as follows;

At the height from which the object is launched, x = 0, and f(x) = 34.3

At the ground level to which the object can drop, f(x) = 0

∴ f(x) = -4.9·x² + 29.4·x + 34.3 = 0

-4.9·x² + 29.4·x + 34.3 = 0

By the quadratic formula, we have;

x = (-29.4 ± √(29.4² - 4 × (-4.9) × 34.3))/(2 × (-4.9)

∴ x = -1, or 7

Given that time is a natural number, we have the reasonable domain for the scenario as the start time when the object is launched, t = 0 to the time the object reaches the ground, t = 7

Therefore, the reasonable domain for the scenario is; 0 ≤ x ≤ 7 or [0, 7].

4 0
3 years ago
What passes through (-2,5) and (3,9)
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Use maaaathhhhwwwaaayyy

It’s a lot better

3 0
3 years ago
a triangular prism has a base with a length of 6 in and a height of 8 cm. the height of the whole prism is 12 cm. What is the vo
777dan777 [17]
The volume of a prism of this type is 

v= (1/2) x B x h x H 

(1/2) x 15.24 x 8 x 12

= 732
6 0
3 years ago
Read 2 more answers
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