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3 years ago

Evaluate 9 – b when b = 8 what’s the answer

Mathematics

1 answer:

skad [1K]3 years ago

7 0

Answer:

Step-by-step explanation:

9-b is the same as 9-8 because b=8. 9-8=1.

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3. Patricia buys a round dining room table. If the radius of the table is 3 feet, what is the area she has

Jlenok [28]

Answer:

28 square feet

Step-by-step explanation:

$Area = \pi r^{2}$

Area = $\pi$ ×(3×3)

Area = 28.2743

6 0

3 years ago

Consider the force field and circle defined below.

grin007 [14]

By Green's theorem,

$\displaystyle\int_{x^2+y^2=9}\vec F(x,y)\cdot\mathrm d\vec r=\iint_D\left(\frac{\partial(xy)}{\partial x}-\frac{\partial(x^2)}{\partial y}\right)\,\mathrm dx\,\mathrm dy=\iint_Dy\,\mathrm dx\,\mathrm dy$

where $C$ is the circle $x^2+y^2=9$ and $D$ is the interior of $C$ , or the disk $x^2+y^2\le1$ .

Convert to polar coordinates, taking

$\begin{cases}x=r\cos\theta\\y=r\sin\theta\end{cases}\implies\mathrm dx\,\mathrm dy=r\,\mathrm dr\,\mathrm d\theta$

Then the work done by $\vec F$ on the particle is

$\displaystyle\iint_Dy\,\mathrm dx\,\mathrm dy=\int_0^{2\pi}\int_0^3(r\sin\theta)r\,\mathrm dr\,\mathrm d\theta=\left(\int_0^{2\pi}\sin\theta\,\mathrm d\theta\right)\left(\int_0^3r^2\,\mathrm dr\right)=\boxed0$

4 0

3 years ago

6973x63 pls explain how u did it!

Goryan [66]

Answer:

4,39299

Step-by-step explanation:

I multiplied 3 x all the numbers in 6,973, then 6 x all the numbers (I added a 0 before I multiplied, then added both the products and got my answer.

4 0

2 years ago

Identify the slope of the line<br> y=-4- 1/6x

NemiM [27]

Y=mx+b
y=-1/6x-4
slope= -1/6

6 0

2 years ago

Compute the probability of randomly selecting a three or club.

Pavlova-9 [17]

Find the total number of cards in a deck. Count all the # 3’s total cards/#3 cards
Count all the clubs total card/ clubs
Not sure if you are counting 3’s & clubs together. If you are, total cards/ both
So all you have to do is count & then divide to get the probability.

5 0

3 years ago