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3 years ago

IF ANSWERD CORRECTLY WILL GIVE BRAINLIEST DO NOT GIVE ME PDFS IF YOU DO I WiLL REPORT YOU

Mathematics

1 answer:

stealth61 [152]3 years ago

3 0

Answer:

https://www.supermarketnews.com/consumer-trends/it-s-new-scene-grocery-shopping-pandemic-changes-behaviors

Step-by-step explanation:

its not a PDF its a website that i think might help you take a look if doesn't help i'll tell you

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Pythagorean Theorem #2

Nataly_w [17]

Answer:

4 square root 2

Step-by-step explanation:

the pythagorian theorem will look like this: 2^2+b^2=6^2

simpify: 4+b^2=36

get b by itself by subtracting four from each side: b^2=32

take the square root of 32 and simplify: 4sqrt2

6 0

3 years ago

Read 2 more answers

-3/4 + 7/2 help me l

yawa3891 [41]

11 over 4

(Decimal: 2.75)

4 0

3 years ago

CAN SOMEONE HELP ME IN THIS INTEGRAL QUESTION PLS

finlep [7]

Due to the symmetry of the paraboloid about the <em>z</em>-axis, you can treat this is a surface of revolution. Consider the curve $y=x^2$ , with $1\le x\le2$ , and revolve it about the <em>y</em>-axis. The area of the resulting surface is then

$\displaystyle2\pi\int_1^2x\sqrt{1+(y')^2}\,\mathrm dx=2\pi\int_1^2x\sqrt{1+4x^2}\,\mathrm dx=\frac{(17^{3/2}-5^{3/2})\pi}6$

But perhaps you'd like the surface integral treatment. Parameterize the surface by

$\vec s(u,v)=u\cos v\,\vec\imath+u\sin v\,\vec\jmath+u^2\,\vec k$

with $1\le u\le2$ and $0\le v\le2\pi$ , where the third component follows from

$z=x^2+y^2=(u\cos v)^2+(u\sin v)^2=u^2$

Take the normal vector to the surface to be

$\dfrac{\partial\vec s}{\partial u}\times\dfrac{\partial\vec s}{\partial u}=-2u^2\cos v\,\vec\imath-2u^2\sin v\,\vec\jmath+u\,\vec k$

The precise order of the partial derivatives doesn't matter, because we're ultimately interested in the magnitude of the cross product:

$\left\|\dfrac{\partial\vec s}{\partial u}\times\dfrac{\partial\vec s}{\partial v}\right\|=u\sqrt{1+4u^2}$

Then the area of the surface is

$\displaystyle\int_0^{2\pi}\int_1^2\left\|\dfrac{\partial\vec s}{\partial u}\times\dfrac{\partial\vec s}{\partial v}\right\|\,\mathrm du\,\mathrm dv=\int_0^{2\pi}\int_1^2u\sqrt{1+4u^2}\,\mathrm du\,\mathrm dv$

which reduces to the integral used in the surface-of-revolution setup.

7 0

3 years ago

Estimate 1757.5 divided by 38

Tomtit [17]

Answer:

46.25

1757.5 divided by 38 is 46.25

4 0

3 years ago

The height of Tower A is 720 feet more than Tower B. The two towers have a combined height of 1,982 feet. What are the heights o

Kobotan [32]

Okay so.

We have two basic equations

Tower A+ B+720 A is 720ft taller than B.
Tower A+B= 1982 Combined height is 1982ft

Replace A with B+720 in 2nd equation and solve for B

B+720+B=1982 Combine like terms
2B+720=1982 Subtract 720 from both sides
2B=1262 Divide both sides by 2
B=1262/2
B= 631ft

We know that A=B+720 so you simply need to do that addition to have the height of both towers.

4 0

3 years ago