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3 years ago

Can anyone help with this pls

Mathematics

2 answers:

puteri [66]3 years ago

7 0

Answer:

Step-by-step explanation:

zhannawk [14.2K]3 years ago

7 0

Answer:

9 square meter

Step-by-step explanation:

1/2xbasexheight

=1/2x6x3

plz mark me as brainliest.

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If the circumference of a circle is 201 centimeters, what is the radius of the circle (to the nearest whole number)? Use 3.14 fo

klasskru [66]

32
201 / 2 / 3.12 = 32

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4 years ago

Equations of exponential Functions

natima [27]

Answer:

D. 1.12

Step-by-step explanation:

I calculated it logically

4 0

3 years ago

I need help ASAP PLEASE!!!

kolezko [41]

Answer:

x = 94

Step-by-step explanation:

24 + x = 118

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8 0

3 years ago

Please help ill mark you as brainlesit if correct!

BARSIC [14]

Answer:

25%

Step-by-step explanation:

So first calculate how many numbers are above 10.

There are 10

There are only 5 even numbers.

The fraction is: $\frac{1}{4}$ = 25%

4 0

3 years ago

Step 3: write an equivalent expression for sin4x that does not contain powers of trigonometric functions greater than 1.

Len [333]

Answer: I don't know if you wanted to write sin(4x) or $sin^{4} (x)$ , but here we go:

ok, sin(4x) = sin(2x + 2x), and we know that:

sin (a + b) = sin(a)*cos(b) + sin(b)*cos(a)

then sin (2x + 2x) = sin(2x)*cos(2x) + cos(2x)*sin(2x) = 2cos(2x)*sin(2x)

So 2*cos(2x)*sin(2x) is equivalent of sin(4x)

If you writed $sin^{4} (x)$ then:

$sin^{4} (x) = sin^{2} (x)*sin^{2} (x)$

and using that: $sins^{2} (x) = \frac{1-cos(2x)}{2}$

we have: $sin^{2} (x)*sin^{2} (x) = \frac{(1-cos(2x))*(1-cos(2x))}{4} = \frac{1-2cos(2x) + cos^{2}(2x) }{4}$

and using that: $cos^{2} (x) = \frac{1 + cos(2x)}{2}$

$\frac{1-2cos(2x) + cos^{2}(2x) }{4} = \frac{1-2cos(2x) + \frac{1+cos(4x)}{2} }{4}$

You can keep simplifying it, but there is your representation of $sin^{4} (x)$ that does not contain powers of trigonometric functions greater than 1.

4 0

3 years ago