3 years ago

What is 3.75 as a mixed number in its simplest form

Mathematics

1 answer:

Dahasolnce [82]3 years ago

7 0

3 $\frac{3}{4}$

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Solve for x. x = [?] 5x - 7/. 3x + 27

Tanzania [10]

Step-by-step explanation:

5x-7+3x+27=180

8x+20=180

8x=160

x=20°.

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3 years ago

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If 1=3 2=3 3=5 4=4 5=4 Then, 6=?

denpristay [2]

Answer: 6=5 sorry if i am wrong

Step-by-step explanation:

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write the set notation of the following Venn-diagram I will mark him or her as the brainliest answer

GalinKa [24]

Answer:

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2 years ago

Simplify 12(6b+2). 96b 72b+24 18b+14 2b+6

alekssr [168]

Distributive formula:
a(b+c) = ab + ac

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3 years ago

Cos(x+y)cos(x-y)=cos^2(x)-sin^2(y) Verify the identity

GenaCL600 [577]

Answer: Verified.

Step-by-step explanation: The given identity involving trigonometric ratios is

$\cos(x+y)\cos(x-y)=\cos^2x-\sin^2y.$

We have

$L.H.S.\\\\=\cos(x+y)\cos(x-y)\\\\=\left(\cos x\cos y-\sin x\sin y\right)\left(\cos x\cos y+\sin x\sin y\right)\\\\=\left(\cos x\cos y\right)^2-\left(\sin x\sin y\right)^2\\\\=\cos^2x\cos^2y-\sin^2x\sin^2y\\\\=\cos^2x(1-\sin^2y)-(1-\cos^2x)\sin^2y\\\\=\cos^2x-\cos^2x\sin^2y-\sin^2y+\cos^2x\sin^2y\\\\=\cos^2x-\sin^2y\\\\=R.H.S.$

Therefore, L.H.S. = R.H.S.

Thus, the given identity is verified.

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3 years ago

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