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2 years ago

Suppose the price level and value of the U.S. dollar in year 1 are 1 and $1, respectively.

Mathematics

1 answer:

HACTEHA [7]2 years ago

7 0

Answer:

a-2.40, b- 1.60

Step-by-step explanation:

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Need help !!!!!!!!!!! !!!!!!

luda_lava [24]

Answer: B

Step-by-step explanation:

6 0

2 years ago

Which equation is an identity?

spayn [35]

7z + 10 - z = 8z - 2(z - 5)
7z + 10 - z = 8z - 2z + 10
6z + 10 = 6z + 10
6z - 6z = 10 - 10
0 = 0

Therefore, 7z + 10 - z = 8z - 2(z - 5)

3 0

3 years ago

The measure of the angles of a triangle are in the extended ratio 17 : 16 : 12. what is the measure of the largest angle?

murzikaleks [220]

17x + 16x + 12x =180
45x = 180
x = 4
Largest angle = 17*4 = 68 degrees

8 0

3 years ago

Read 2 more answers

Show that cos(3x) = cos3(x) − 3 sin2(x)cos(x). (Hint: Use cos(2x) = cos2(x) − sin2(x) and the cosine sum

otez555 [7]

Step-by-step explanation:

To prove:

$\cos 3x=\cos^3x-3\sin^2 x\cos x$

Identities used:

$\cos(A+B)=\cos A\cos B+\sin A\sin B$ ......(1)

$\sin 2A=2\sin A\cos A$ ........(2)

$\cos 2A=\cos^2A-\sin^2 A$ .......(3)

Taking the LHS:

$\Rightarrow \cos 3x=\cos (x+2x)$

Using identity 1:

$\Rightarrow \cos (x+2x)=\cos x\cos 2x-\sin x\sin 2x$

Using identities 2 and 3:

$\Rightarrow \cos x(\cos ^2x-\sin^2 x)-\sin x(2\sin x\cos x)\\\\\Rightarrow \cos^3x-\sin^2x\cos x-2\sin^2 x\cos x\\\\\Rightarrow \cos^3x-3\sin^2x\cos x$

As, LHS = RHS

Hence proved

4 0

2 years ago

Someone help me!!! please...

ycow [4]

Answer:students are the independent because he will get a number of cards depending on how many students there are so its

s independent and c dependent

Step-by-step explanation:

6 0

2 years ago