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2 years ago

MARKING BRAINLIEST PL HURRY!!!!

Mathematics

1 answer:

Grace [21]2 years ago

5 0

I think it's B my dude

925-400=525
525/8=65.625
65.625*100= $6,562.50

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Graph the image of the given triangle after the transformation with the rule (x, y)→(y, x). Select the "Polygon" button from the

VMariaS [17]

Answer:

Your coordinates would be:

(1,8) (1,5) (5,8)

Hope this helps!

5 0

2 years ago

A piece of cardboard is 15 inches by 30 inches. A square is to be cut from each corner and the sides folded up to make an open-t

solmaris [256]

Answer:

Maximum volume = 649.519 cubic inches

Step-by-step explanation:

A rectangular piece of cardboard of side 15 inches by 30 inches is cut in such that a square is cut from each corner. Let x be the side of this square cut. When it was folded to make the box the height of box becomes x, length becomes (30-2x) and the width becomes (15-2x).

Volume is given by

V = $V = Length\times Width\times Height\\V = (30 - 2x)(15-2x)x= 4x^3-90x^2+450x\\So,\\V(x) = 4x^3-90x^2+450x$

First, we differentiate V(x) with respect to x, to get,

$\frac{d(V(x))}{dx} = \frac{d(4x^3-12x^2+9x)}{dx} = 12x^2 - 180x +450$

Equating the first derivative to zero, we get,

$\frac{d(V(x))}{dx} = 0\\\\12x^2 - 180x +450 = 0$

Solving, with the help of quadratic formula, we get,

$x = \displaystyle\frac{5(3+\sqrt{3})}{2}, \frac{5(3-\sqrt{3})}{2}$ ,

Again differentiation V(x), with respect to x, we get,

$\frac{d^2(V(x))}{dx^2} = 24x - 180$

At x =

$\displaystyle\frac{5(3-\sqrt{3})}{2}$ ,

$\frac{d^2(V(x))}{dx^2} < 0$

Thus, by double derivative test, the maxima occurs at

x = $\displaystyle\frac{5(3-\sqrt{3})}{2}$ for V(x).

Thus, largest volume the box can have occurs when $x = \displaystyle\frac{5(3-\sqrt{3})}{2}}$ .

Maximum volume =

$V(\displaystyle\frac{5(3-\sqrt{3})}{2}) = (30 - 2x)(15-2x)x = 649.5191\text{ cubic inches}$

8 0

2 years ago

What is the volume of a sphere with a diameter of 9.1 m, rounded to the nearest tenth of a cubic meter?

muminat

Hello the answer would be approximately 394.57 good luck with the test

7 0

1 year ago

PLEASE HELP ME

irina1246 [14]

Answer:

B) $(-1, -2)$

Step-by-step explanation:

3x + 1 = x - 1

-3x - 3x

___________

1 = −2x - 1

+1 + 1

_________

2 = −2x

_ ___

−2 −2

$x = -1$ [Plug this back into both equations above to get the y-coordinate of -2]; $-2 = y$

I am joyous to assist you anytime.

6 0

2 years ago

What does a hidden question mean?

shutvik [7]

A hidden question is a question that is not popped out. for example Amanda went to the mall yesterday. she brought 2 purses at the store that cost $8.95 each. the tags on the items were $6.07 each. she paid with a $50 bill. how much money did Amanda receive in change? answer: Amanda received $19.96 in change, yesterday at the mall.

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2 years ago

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