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3 years ago

Describe a real world situation for the equation +4+(-4=0

1 answer:

6 0

You could use the equation
+4+(-4)=0 if:

-you earn $4 and spend it

-buying 4 candy bars then eating them

-earning 4 points then losing them

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What is the reciprocal of 4 5/8

Andrei [34K]

Answer:

8/45

Step-by-step explanation:

Write 4 5/8 as an improper fraction: 45/8.

Then invert this result, obtaining:

. This is the "reciprocal" of 4 5/8.

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3 years ago

Read 2 more answers

A roofing job take 6 workers 8 hours to complete. If the number of workers is inversely proportional to the time a job takes to

Wewaii [24]

its a long time before finishing

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3 years ago

Simplify 7 – (–12) – 5

kherson [118]

Answer:

Step-by-step explanation:

1. Do the "Two Mark" Rule

- 7 + (+12) - 5

2. Do your addition before subtracting

- 7 + 12 = 19

3. Subtract your remaining two numbers

- 19 - 5 = 14

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4 years ago

Which relationship describes angles 1 and 2?

Mnenie [13.5K]

Answer:

Step-by-step explanation:

1 and 2 are vertical angles

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3 years ago

Integrate G(x,y,z)equalsz over the parabolic cylinder yequalszsquared, 0less than or equalsxless than or equals2, 0less than

yKpoI14uk [10]

I gather you're supposed to compute the integral of $G(x,y,z)=z$ over a surface $S$ that is the part of the parabolic cylinder $y=z^2$ with $0\le x\le2$ and $0\le z\le\frac{\sqrt{15}}2$ .

We can parameterize $S$ by

$\vec s(x,z)=x\,\vec\imath+z^2\,\vec\jmath+z\,\vec k$

with the given constraints on $x$ and $z$ . Take the normal vector to $S$ to be

$\vec s_x\times\vec s_z=-\vec\jmath+2z\,\vec k$

so that the surface element is

$\mathrm dS=\|\vec s_x\times\vec s_z\|\,\mathrm dx\,\mathrm dz=\sqrt{1+4z^2}\,\mathrm dx\,\mathrm dz$

Then in the integral, we have

$\displaystyle\iint_Sz\,\mathrm dS=\int_0^2\int_0^{\sqrt{15}/2}z\sqrt{1+4z^2}\,\mathrm dz\,\mathrm dx=\boxed{\frac{21}2}$

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3 years ago