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White raven [17]
3 years ago
7

The cosine function is an even function?

Mathematics
2 answers:
grigory [225]3 years ago
7 0

Answer:

True

Step-by-step explanation:

apex

gavmur [86]3 years ago
3 0

sine is an odd function, and cosine is an even function.

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Is the following shape a rectangle? How do you know?
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the answer is D ~apex :3

Step-by-step explanation:

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4 years ago
What points are solutions for the system of equations?
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Please answer quick! Thank You! Math
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People use water to cook, clean, and drink every day. An estimate of 15.5% of the water used each
Studentka2010 [4]

Answer:

260 gallons

Step-by-step explanation:

An estimate of 26.5​% of the water used each day is for cleaning and a family uses 68.9 gallons of water a day for cleaning​,

Percentage of water used for cleaning= 26.5%

Gallons of water used for cleaning= 68.9

Let the number of gallons used everyday be represented by g. This will give:

26.5% of g = 68.9

26.5/100 × g = 68.9

0.265 × g = 68.9

0.265g = 68.9

Divide both side by 0.265

0.265g/0.265 = 68.9/0.265

g= 260

260 gallons of water are used everyday

5 0
3 years ago
F(x) = -4x2 + 4x – 4<br> Find f(3)
ValentinkaMS [17]

F(3) occurs when x =3. So lets plug 3 into our equation.

f(3) = -4(3)^2 + 4(3)-4\\f(3) = -4(9) + 12- 4\\f(3) = -36 + 12- 4\\f(3)= -28

F(3) = -28

I hope this helps! :)

5 0
3 years ago
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