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3 years ago

What percent is 36 out of 90

Mathematics

1 answer:

icang [17]3 years ago

6 0

40---------
40-------
40---------
40-------
40--------

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Three-sevenths of a number is 21. Find the number

ruslelena [56]

You can set up a proportion that looks like 3/7 = x/21. X being the number that you are trying to find. Seven goes into 21 three times. So multiply 3 also by that 3 to get 9. So three sevenths of twenty-one is 9.

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3 years ago

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Help pleaseee?<br> thank you

Artist 52 [7]

Cos θ = 35/37
θ = $cos^{-1}$ (35/37)
θ = 18.9 degrees or B

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4 years ago

Which is the better buy, 36 cans for $3.32, or 9 cans for $0.91 ?

valentina_108 [34]

Answer:

36 cans for $3.32

Step-by-step explanation:

36 cans = $3.32

1 can =$ 0.092

9 cans = $0.91

1 can = $0.01

0.09 and 0.1 the cheaper is 0.09 dollars so 36 cans for $3.32 is better

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4 years ago

3. The radius of a circle is 14 yds. What is the area? Use 3.14 as pi.

Flura [38]

Answer: I'm just answering so if only one person answers then u can give the other person brainliest.

Step-by-step explanation: Also if nobody is answering u might want to repost this question

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3 years ago

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Use the power-reducing formulas to rewrite the expression as an equivalent expression that does not contain powers of trigonome

ratelena [41]

Answer:

$x = 0.175\cdot (1-\cos 4\cdot \theta)$

Step-by-step explanation:

Let use the following trigonometric identities:

$\sin^{2}\theta = \frac{1-\cos 2\cdot \theta}{2} \\\cos^{2}\theta = \frac{1+\cos 2\cdot \theta}{2}$

Then, the equation is simplified by substituting its components:

$x = 1.40\cdot \left(\frac{1-\cos 2\cdot \theta}{2} \right)\cdot \left(\frac{1+\cos 2\cdot \theta}{2} \right)$

$x = 0.35\cdot (1-\cos^{2}2\cdot \theta)$

$x = 0.35\cdot \sin^{2}2\cdot \theta$

$x = 0.35\cdot \left(\frac{1-\cos 4\cdot \theta}{2} \right)$

$x = 0.175\cdot (1-\cos 4\cdot \theta)$

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4 years ago

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