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3 years ago

Find the area of a circle with radius = 12cm give your answer rounded to 3SF

Mathematics

2 answers:

I am Lyosha [343]3 years ago

6 0

Answer:

452.4

Step-by-step explanation:

area is given by πradius squared which gives answer as 452.389

Natalka [10]3 years ago

6 0

Answer:

452.39 because you have to take the radius squared times pie or 3.14 to get the area so your answer would be 452.39

Step-by-step explanation:

Hope it helps

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Which of the following is an example of an open equation? 5x + 7 = 12 , 12 + (-8) = 4 , 25 = 5 (5) , 8 + 0 =8

spayn [35]

An open equation is an equation that contain one or more unknow variables.

And that/those variable(s) can be found by solving the equation that make the equation true.

A variable is an English alphabet.

For example, a,b, x, y,z etc.

A variable represents a unknow value for a particular quantity.

In the given options 5x + 7 = 12 , 12 + (-8) = 4 , 25 = 5 (5) , 8 + 0 =8 .

In first option, we have unknow variable x is there.

But in all other options we don't value any variable.

Therefore, all other options can't be open equation.

So, final answer is 5x + 7 = 12 is the only open equation in given options.

7 0

2 years ago

Please help and with explanation

Zanzabum

Answer:

$x=-1$

Step-by-step explanation:

STEP 1: Factor x ^2 − 8 x + 12 using the AC method.

$\frac{4}{(x-6)(x-2)} =\frac{x}{x-2} +\frac{1}{x-6}$

STEP 2: Find the LCD of the terms in the equation.

$(x-6)(x-2)$

STEP 3: Multiply each term by ( x − 6 ) ( x − 2 ) and simplify.

$4=x^2-5x-2$

STEP 4: Solve the equation.

$x=6,-1$

STEP 5: Figure out the answer.

$x=-1$

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scZoUnD [109]

A and D is the answer

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3x + 1 − 4x3 + 6x6 −2x2 standard form

Molodets [167]

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3 years ago

Solve the inequality<br> x² + 6x + 8 <0

baherus [9]

Answer:

look above

Step-by-step explanation:

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