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Brilliant_brown [7]
3 years ago
8

45 centimeters is equal to how many inches

Mathematics
2 answers:
Solnce55 [7]3 years ago
8 0

Answer:

Around 17.716 inches

Step-by-step explanation:

valkas [14]3 years ago
4 0

Answer:

17.7 inches to the nearest tenth

Step-by-step explanation:

Recall that

1 in=2.54 cm

This implies that;

1cm=\frac{1}{2.54} in.

Or

1cm=\frac{50}{127} in.

This implies that;

45 cm=45\times\frac{50}{127}in

45 cm=45\times\frac{50}{127}in

This simplifies to;

45 cm=17.7 in to the nearest tenth.

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Out of 25, Alan made 18 basketball shots. If he shoots 100 shots, how many should we expect him to make?
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Answer: 72

Step-by-step explanation:

25:18 - 25 total : 18 made

25:18 x 4 = 100:72

100:72- 100 total : 72 made

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What would the answer be
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Answer:

B.

Step-by-step explanation:

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Find the x-intercept of the line:
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If sinA=√3-1/2√2,then prove that cos2A=√3/2 prove that
Ivan

Answer:

\boxed{\sf cos2A =\dfrac{\sqrt3}{2}}

Step-by-step explanation:

Here we are given that the value of sinA is √3-1/2√2 , and we need to prove that the value of cos2A is √3/2 .

<u>Given</u><u> </u><u>:</u><u>-</u>

• \sf\implies sinA =\dfrac{\sqrt3-1}{2\sqrt2}

<u>To</u><u> </u><u>Prove</u><u> </u><u>:</u><u>-</u><u> </u>

•\sf\implies cos2A =\dfrac{\sqrt3}{2}

<u>Proof </u><u>:</u><u>-</u><u> </u>

We know that ,

\sf\implies cos2A = 1 - 2sin^2A

Therefore , here substituting the value of sinA , we have ,

\sf\implies cos2A = 1 - 2\bigg( \dfrac{\sqrt3-1}{2\sqrt2}\bigg)^2

Simplify the whole square ,

\sf\implies cos2A = 1 -2\times \dfrac{ 3 +1-2\sqrt3}{8}

Add the numbers in numerator ,

\sf\implies cos2A =  1-2\times \dfrac{4-2\sqrt3}{8}

Multiply it by 2 ,

\sf\implies cos2A = 1 - \dfrac{ 4-2\sqrt3}{4}

Take out 2 common from the numerator ,

\sf\implies cos2A = 1-\dfrac{2(2-\sqrt3)}{4}

Simplify ,

\sf\implies cos2A =  1 -\dfrac{ 2-\sqrt3}{2}

Subtract the numbers ,

\sf\implies cos2A = \dfrac{ 2-2+\sqrt3}{2}

Simplify,

\sf\implies \boxed{\pink{\sf cos2A =\dfrac{\sqrt3}{2}} }

Hence Proved !

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