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lyudmila [28]
2 years ago
5

Which expression is equivalent to 2cos2(x/2)-cos(x)

Mathematics
1 answer:
Pavel [41]2 years ago
3 0

Answer:

B

Step-by-step explanation:

Edge

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Mila Hawkins purchased a bookshelf for $210.00.
Alenkinab [10]

Answer:

$12.60

Step-by-step explanation:

6% of 210 is .06 x 210 which equals 12.60

6 0
3 years ago
Find the equation of the exponential function represented by the table below:
IgorC [24]

Answer:

y=2^{1-x}

Step-by-step explanation:

<u>Exponential Function</u>

When we need to express the exponential relation between two variables, we use the equation

y=Cr^{x}

where C, r are constants to be determined by using the given points from the table

For x=0, y=2, thus

2=C.r^{0}=C

We find that C=2

The equation is now

y=2r^{x}

Now we use the point x=1, y=1

1=2r

We find that

\displaystyle r=\frac{1}{2}

Thus, the equation is

\displaystyle y=2\left(\frac{1}{2}\right)^{x}

Rearranging

y=2(2)^{-x}=2^{1-x}

The required equation is

y=2^{1-x}

We can easily verify the last two points are also obtained by using the equation

7 0
3 years ago
Place the numbers in ascending order.
frutty [35]

Answer:

in question it say descending order and you say ascending order what to do ?

in deceasing order

√23

180%

1 2/7,

√49/7,

π-5

this is the correct answer

7 0
3 years ago
Please help i don’t understand
SashulF [63]

Answer:

Use inverse cos to solve for x.

hope this helps

3 0
3 years ago
3x-6y=30 solve for x
ELEN [110]

Answer:

Step-by-step explanation:

x = 10+2y

6 0
3 years ago
Read 2 more answers
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