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3 years ago

7

I attached a photo of the question:)

2 answers:

Vera_Pavlovna [14]3 years ago

7 0

Your Answer Would Be A) 150

kolbaska11 [484]3 years ago

3 0

The answer is A.
1/2*12*25
6*25
150 square inches

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Which expression, when simplified, is equal to 7p

Sphinxa [80]

Um I dont know the specific expression. But I think one of them would be 6p + 1p = 7p. I know its really simple but its kinda right. Hope I can help. Sorry If im wrong

6 0

3 years ago

Please help me answer this question

stealth61 [152]

The value of dy/dx for the functions are

(i) $\frac{dy}{dx} = 4x^{2}sin2x.cos2x+ 2x. sin^{2}2x$

(ii) $\frac{dy}{dx} =\frac{- y(1+3x^{2})}{2x(1+x^{2}) }$

<h3>Differentiation</h3>

From the question, we are to determine dy/dx for the given functions

(i) $x^{2} sin^{2}2x$

Let $u = x^{2}$

and

$v = sin^{2} 2x$

Also,

Let $w= sin2x$

∴ $v = w^{2}$

First, we will determine $\frac{dv}{dx}$

Using the Chain rule
$\frac{dv}{dx} = \frac{dv}{dw}.\frac{dw}{dx}$

$v = w^{2}$

∴ $\frac{dv}{dw} =2w$

Also,

$w= sin2x$

∴ $\frac{dw}{dx} =2cos2x$

Thus,

$\frac{dv}{dx} = 2w \times 2cos2x$

$\frac{dv}{dx} = 2sin2x \times 2cos2x$

$\frac{dv}{dx} = 4sin2x . cos2x$

Now, using the product rule

$\frac{dy}{dx} = u\frac{dv}{dx} + v\frac{du}{dx}$

From above

$u = x^{2}$

∴ $\frac{du}{dx}=2x$

Now,

$\frac{dy}{dx} = x^{2} (4sin2x.cos2x)+ sin^{2}2x (2x)$

$\frac{dy}{dx} = 4x^{2}sin2x.cos2x+ 2x. sin^{2}2x$

(ii) $xy^{2}+y^{2}x^{3} +2=0$

Then,

$x.2y\frac{dy}{dx}+ y^{2}(1)+y^{2}.3x^{2} + x^{3}.2y\frac{dy}{dx} +0=0$

$2xy\frac{dy}{dx}+ y^{2}+3x^{2}y^{2} + 2x^{3}y\frac{dy}{dx} =0$

$2xy\frac{dy}{dx}+2x^{3}y\frac{dy}{dx} =- y^{2}-3x^{2}y^{2}$

$\frac{dy}{dx} (2xy+2x^{3}y)=- y^{2}(1+3x^{2})$

$\frac{dy}{dx} =\frac{- y^{2}(1+3x^{2})}{2xy+2x^{3}y}$

$\frac{dy}{dx} =\frac{- y^{2}(1+3x^{2})}{2xy(1+x^{2}) }$

$\frac{dy}{dx} =\frac{- y(1+3x^{2})}{2x(1+x^{2}) }$

Hence, the value of dy/dx for the functions are

(i) $\frac{dy}{dx} = 4x^{2}sin2x.cos2x+ 2x. sin^{2}2x$

(ii) $\frac{dy}{dx} =\frac{- y(1+3x^{2})}{2x(1+x^{2}) }$

Learn more on Differentiation here: brainly.com/question/24024883

#SPJ1

8 0

2 years ago

Simplify the expression. 10√6b + 5 √15c - 8 √6b - 3 √15c

ELEN [110]

Answer:

The answer to your question is: $2\sqrt{6} b + 2\sqrt{15} c$

Step-by-step explanation:

10 $\sqrt{6} b$ + 5 $\sqrt{15} c - 8\sqrt{6} b - 3\sqrt{15} c$

Simplify like terms

$(10\sqrt{6} b - 8\sqrt{6} b) + (5\sqrt{15} c - 3\sqrt{15} c )$

$2\sqrt{6} b + 2\sqrt{15} c$

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4 years ago

Helpakakakqkqkqkqkqkqoqoqoqoqoqoqo

gladu [14]

Answer:

x is going up by 5 and y is going up by 10

Step-by-step explanation:

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3 years ago

Can anybody please help me out how solved this problem pleased

maks197457 [2]

Answer:

i am sevn i ned hlp wht 1 plas 3 plz hlp

Step-by-step explanation:

I ned hlp

3 0

3 years ago