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Mathematics

1 answer:

nalin [4]3 years ago

7 0

I got you 3/6

Reason: I am smart

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Which letters have rotational symmetry ? answers : W , K, Y , O , P , Z

nirvana33 [79]

O definitely does. I think Z and W do as well.

Y, K and P don't because they can't be rotated and map onto themselves.

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3 years ago

X^2 - 81y^2<br><br>can someone please answer this ?

harina [27]

Answer:

Since both terms are perfect squares, factor using the difference of squares formula.

(x+9y)(x−9y)

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3 years ago

Read 2 more answers

A carpenter is assigned the job of expanding a rectangular deck where the width is one-fourth the length. The length of the deck

leva [86]

Let the width be W, then the length is 4W (since the width is 1/4 the length)

The area of the original deck is $W*4W=4W^{2}$

The dimensions of the new deck are :

length = 4W+6
width=W+2

so the area of the new deck is :

$(4W+6)(W+2)= 4W^{2}+8W+6W+12= 4W^{2}+14W+12$

"<span>the area of the new rectangular deck is 68 ft2 larger than the area of the original deck</span>" means that we write the equation:

$4W^{2}+14W+12=68+4W^{2}$

$14W+12=68$

$14W=68-12=56$

$W= \frac{56}{14}= 4$

the length is $4W=4*4=16$ ft

Answer: width: 4, length: 16

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3 years ago

What is the difference between a linear function and a nonlinear function?

gavmur [86]

Linear functions have no exponents higher than 1, and a graph that looks like a straight line. non-linear functions have at least one exponent higher than 1, and a graph that isn't a straight line

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2 years ago

2.199 rounded to the nearest whole number

steposvetlana [31]

Rounding 2.199. The tenths digit is 1, which is 4 or less, so you will round down. Re-write 2.199 without the decimal places: 2 . So 2.199 rounds to 2.

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3 years ago