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GalinKa [24]
2 years ago
8

Which statement regarding the function y=cos(x) is true?

Mathematics
2 answers:
Amanda [17]2 years ago
7 0
Cos(x)=cos(-x)-For apex people who are trying to make sure.
MAVERICK [17]2 years ago
6 0
<span>A. cos(x) = cos(-x)  [correct, since cos(x) is an even function]
B. Since the cosine function is even, reflection over the x-axis [y-axis] does not change the graph.  [false]
C. cos(x) = -cos(x)   [ false]
D. The cosine function is odd [even], so it is symmetrical across the origin.   [false]</span>
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A four-digit code can use the numbers 1, 2, 3, 4. Any of the numbers can be repeated.
alukav5142 [94]

Answer:

256 codes

Step-by-step explanation:

3 0
2 years ago
Julio bought a total of 20 medium and large pumpkins. If he spent $53 and bought 6 more large pumpkins as medium pumpkins, how m
Tatiana [17]
20 medium and large pumpkins

m ... number of medium pumpkins
l ... number of large pumpkins

20 = m + l
20 = m + (m + 6)
20 = 2 * m + 6
2 * m = 20 - 6
2 * m = 14
m = 7 medium pumpkins

l = 20 - 7 = 13 large pumpkins

Result: Julio bought 13 large pumpkins.
5 0
3 years ago
What is 126/6 simplified to​
MissTica

Answer: 21

Step-by-step explanation:

The reason why it's 21 because when you divide 126/6 you get a whole number instead of a mixed number.

7 0
2 years ago
Read 2 more answers
A group of friends were working on a student film. They spent all their budget on props and costumes. They spent $243 on props,
SVETLANKA909090 [29]

Answer:

The total budget for their student film was $540

Step-by-step explanation:

The total percentage of any quantity is 100%

∵ A group of friends was working on a student film

∵ They spent all their budget on props and costumes

∴ The total budget of the props and costumes = 100%

∵ They spent $243 on props

∵ They spent 55% of the total budget on costumes

→ Find the percentage of the props

∴ The percentage of the props = 100% - 55%

∴ The percentage of the props of the total budget = 45%

→ That means 45% of the total budget = 243

∵ 45% × total budget = 243

→ Change the percent to a number by divide it by 100

∵ 45% = 45 ÷ 100 = 0.45

∴ 0.45 × total budget = 243

→ Divide both sides by 0.45

∴ The total budget = 540

∴ The total budget for their student film was $540

4 0
3 years ago
Read 2 more answers
Please help precalculus
aleksley [76]
The max value can be found by setting the derivative equal to 0 and solving for x, then subbing that value for x back into the original function and solving for y.  f'(x)= \frac{(x^2+3)(0)-2(2x)}{(x^2+3)^2} which simplifies to f'(x)= \frac{-4x}{(x^2+3)^2}.  This derivative is equal to 0 when -4x is equal to 0.  If -4x = 0, then x = 0.  If we find f(0), then f(0)= \frac{2}{(0)^2+3} and y here is 2/3.  So the max value occurs at (0, 2/3).  There you go!
3 0
3 years ago
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