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3 years ago

Can anyone help? Please??!!

Mathematics

1 answer:

goldfiish [28.3K]3 years ago

7 0

Hi! The answer to that question is B and D cause if you read the promblem it is it!

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What is 3/4 / 1/6? (please help)

Vlada [557]

It is 4 1/2. If you keep the first number switch the division symbol into a multiplication sign and find the reciprocal of the last number you would get this.

4 0

3 years ago

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Find the volume of the solid that lies between planes perpendicular to the x-axis at x = pi/4 and x = 5pi/4. The cross-sections

svp [43]

Answer:

The volume of the solid = π²

Step-by-step explanation:

As per the given data of the questions,

The diameter of each disk is

D = 2 sin(x) - 2 cos(x)

So its radius is

R = sin(x) - cos(x).

The area of each disk is

$= \pi \times(sinx-cosx)^{2}$

$= \pi \times [sin^{2}(x) - 2 sin(x) cos(x) + cos^{2}(x)]$

$= \pi[1-2sin(x)cos(x)]$

$= \pi[1-sin(2x)]$

Now,

Integrate from $x=\frac{\pi}{4}\ \ \ to\ \ \ x=\frac{5\pi}{4}$ , we get volume:

$V=\int_{\frac{\pi}{4}}^{\frac{5\pi}{4}} \pi[1-sin(2x)]dx$

After integrate without limit we get

$V=\pi[x+\frac{cos2x}{2}]$

Now after putting the limit, we get

V = π²

Hence, the required volume of the solid = π²

3 0

3 years ago

Laurel wants to build a fence around her square garden. Each side measures 50 feet. She also wants to fence in 3 square rose bed

hjlf

Square has 4 sides equal
garden has 4 sides of 50 each (4 times 50=200)

each smal garden is 10.5 times 4 sinc ethey also have 4 sides
10.5*4=42
times 3 since 3 of them
42*3=126

add to find total
garden+3rosebuds=200+126=326 ft^2

8 0

3 years ago

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Please help!! Find the value of x. 6 8 A D 4 x = [?] Enter

blondinia [14]

The answer will be 5 ya welcome

7 0

3 years ago

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What is the function rule of (1,30) (2,35) (3,40) (4,45)?

stepan [7]

$\bf \begin{array}{ccll}
x&y\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1&30\\
2&35\\
3&40\\
4&45\\
a&5(a)+25
\end{array}\qquad \qquad y=5x+25$

if you have already covered slopes, you could also get it that way, in fact is simpler that way.

8 0

3 years ago