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olga2289 [7]
2 years ago
11

Which function is the same as y=cos(2(x+pi/2))-2

Mathematics
1 answer:
miss Akunina [59]2 years ago
8 0
Y=cos(2x+pi) - 2
y= - cos(2x) - 2
{ Since cos(x+pi) =-cos(x)}
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The diameter of a circle is 6 in. Find its area to the nearest tenth.
Marrrta [24]

Answer and Step-by-step explanation:

The area formula for a Circle is:

A = \pi r^2

Diameter is equal to the radius times 2.

<u>So, divide the diameter to get the radius.</u>

6 divided by 2 equals 3.

<u>Now, plug it into the formula.</u>

A = \pi (3)^{2}

A = 9\pi

Plug this into your calculator by multiplying 9 by pi.

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2 years ago
Which of the following is the contrapositive of the conditional below?
masha68 [24]

Answer:

If 3 + 4 ≠ 6, then 2 · 5 = 10.

Step-by-step explanation:

To form the contrapositive of the conditional statement, interchange the hypothesis and the conclusion of the inverse statement. The contrapositive of "If it rains, then they cancel school" is "If they do not cancel school, then it does not rain." If p , then q .

8 0
2 years ago
Four different stores have the same digital camera on sale. The original price and discounts offered by each store are
inysia [295]

Answer:

should be "d" though i haven't calculated it all exactly

Step-by-step explanation:

A : 85

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3 0
3 years ago
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Which of the following does not belong to the solution set of -3x + 7 &lt; 11?
erik [133]
-3x+7<11

-3x<4

x>-4/3

So anything less than or equal to -4/3 does not belong to the solution set.

With your update:

"<span>The options is 4,-1,-5,and 0"

-5 does not belong to the solution set...</span>
7 0
3 years ago
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(b) The perimeter of a rectangular painting is 250 cm.
hodyreva [135]
53x2=106
250-106= 144
144/2=72
The length is 72cm
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3 years ago
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