4 years ago

What is 39/81 in simplest form?

Mathematics

1 answer:

vladimir2022 [97]4 years ago

8 0

13/27 is the simplest form.

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If the diameter of a circle is 9 cm, then its circumference is 56.52 cm.<br> True or False

Georgia [21]

Answer: true

Step-by-step explanation: first you divide its circumference by pi, which you then get 17.990. Round it to 18. Then use the diameter (18) and divide it by 2. You get 9.

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3 years ago

Solve the equation for θ, where

elena-s [515]

Answer:

$\dfrac{\pi}{4},\dfrac{3\pi}{4}$

Step-by-step explanation:

$2\sin^2(\theta)=1$

Divide both sides by 2:

$\sin^2(\theta)=\dfrac{1}{2}$

Take the square root of both sides:

$\sin(\theta)=\dfrac{1}{\sqrt{2}}=\dfrac{\sqrt{2}}{2}$

The only two places on the unit circle where the y value of the point is $\dfrac{\sqrt{2}}{2}$ are at:

$\dfrac{\pi}{4},\dfrac{3\pi}{4}$

Hope this helps!

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4 years ago

Which of the following numbers is between - 3/4 and 5/8?

SVETLANKA909090 [29]

Answer:

The correct answer is B.

Step-by-step explanation:

If you place all of them on a number line the order from least to greatest would be:

-1, -3/4, -1/2, 5/8, 7/8, 0.9

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3 years ago

8 tenths and 7 hunderths can be regrouped as what?

Fittoniya [83]

Answer:

Step-by-step explanation:

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4 years ago

Simplify the expression 417000 x 0.0002

Amanda [17]

Please see picture above.

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3 years ago