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Nuetrik [128]
3 years ago
9

Are u smarter than a first grader

Mathematics
2 answers:
densk [106]3 years ago
8 0

Answer:

404.48

Step-by-step explanation:

area is length times width

Vlada [557]3 years ago
7 0

Answer:

The answer is <u>404.48</u>

All you have to do is multiply length by width, so 31.6 times 12.8 which equals out to 404.48.

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If the radius is 10 inches , in square inches, what is the circumference of the circle?
Law Incorporation [45]

C=2\pi r =2\pi10=20\pi\approx\boxed{62.8}

The answer is D.

4 0
3 years ago
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Answer:

Step-by-step ex$ in 6 in 14 dt lenght times width times hight planation:

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3 years ago
Factor both quadratic expressions. (x 4 + 5x 2 - 36)(2x 2 + 9x - 5) = 0
Sonbull [250]

So focusing on x^4 + 5x^2 - 36, we will be completing the square. Firstly, what two terms have a product of -36x^4 and a sum of 5x^2? That would be 9x^2 and -4x^2. Replace 5x^2 with 9x^2 - 4x^2: x^4+9x^2-4x^2-36

Next, factor x^4 + 9x^2 and -4x^2 - 36 separately. Make sure that they have the same quantity inside of the parentheses: x^2(x^2+9)-4(x^2+9)

Now you can rewrite this as (x^2-4)(x^2+9) , however this is not completely factored. With (x^2 - 4), we are using the difference of squares, which is a^2-b^2=(a+b)(a-b) . Applying that here, we have (x+2)(x-2)(x^2+9) . x^4 + 5x^2 - 36 is completely factored.

Next, focusing now on 2x^2 + 9x - 5, we will also be completing the square. What two terms have a product of -10x^2 and a sum of 9x? That would be 10x and -x. Replace 9x with 10x - x: 2x^2+10x-x-5

Next, factor 2x^2 + 10x and -x - 5 separately. Make sure that they have the same quantity on the inside: 2x(x+5)-1(x+5)

Now you can rewrite the equation as (2x-1)(x+5) . 2x^2 + 9x - 5 is completely factored.

<h3><u>Putting it all together, your factored expression is (x+2)(x-2)(x^2+9)(2x-1)(x+5)=0</u></h3>
5 0
3 years ago
Classify the triangle.<br> obtuse<br> equiangular<br> right<br> acute
CaHeK987 [17]

Answer:

acute triangle

Step-by-step explanation:

We have 3 angles that are not equal to each other

They are all smaller than 90 degrees which means they are acute angles

3 0
2 years ago
Read 2 more answers
10% as a decimal? Just want to make sure I'm correct
shutvik [7]
10% as a decimal would be .10
7 0
3 years ago
Read 2 more answers
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