3 years ago

4x^2 + n (n+x) x=3 n=5

Mathematics

1 answer:

Vika [28.1K]3 years ago

3 0

Mm dont know but keep trying

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The perimeter of a rectangle is 24 feet. The length is 3 feet less than twice the width. Which of the following systems would be

Ksivusya [100]

Alright, since the perimeter, by definition, is 2l+2w=24 in this case, we have to have that. In addition twice the width=2*width=2w, so 2w-3=l.

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3 years ago

describe two different ways that you could find the product 8 times 997 using mental math. Find the product and explain why your

Free_Kalibri [48]

Answer:

First in your head multiply 8 by 7. this equals 56. now multiply 8 by 9 twice since there is two 9's. now you have two 72's. Add the 2's together from both 72's. now your numbers are 70, 70, 56 and 4. Add the four to your 5 which is now 96. split 96 between the 70's. not dividing just the two numbers. now you have 79, and 76. put together your numbers and your answer is 7976.

Step-by-step explanation:

3 0

3 years ago

Consider F and C below. F(x, y) = x4y5i + x5y4j, C: r(t) = t3 − 2t, t3 + 2t , 0 ≤ t ≤ 1 (a) Find a function f such that F = ∇f.

vovikov84 [41]

$\mathbf f(x,y)=x^4y^5\,\mathbf i+x^5y^4\,\mathbf j$

We want a scalar function $f(x,y)$ whose gradient is equivalent to the vector field. That means

$\dfrac{\partial f}{\partial x}=x^4y^5\implies f(x,y)=\dfrac{x^5y^5}5+g(y)$
$\dfrac{\partial f}{\partial y}=x^5y^4\implies x^5y^4=x^5y^4+\dfrac{\mathrm dg}{\mathrm dy}$
$\implies\dfrac{\mathrm dg}{\mathrm dy}=0\implies g(y)=C$

So (a)

$f(x,y)=\dfrac{x^5y^5}5+C$

which means (b)

$\displaystyle\int_{\mathcal C}\mathbf f\cdot\mathrm d\mathbf r=f(\mathbf r(1))-f(\mathbf r(0))=f(-1,3)-f(0,0)=-\dfrac{243}5-0=-\dfrac{243}5$

5 0

2 years ago

Please help me I really need these to be answered. Whoever does it gets 100 points!

VladimirAG [237]

Answer 1:

x=2 and y=2

Answer 2:

No solutions.

5 0

3 years ago

Read 2 more answers

Plz help me do this