Hi, can someone help me with this question?

Answer:

a) 7.48 m²

b) 1.54 m³

Step-by-step explanation:

a) ¿Cuánta chapa se necesita para construir un tanque cilíndrico cerrado con un radio de base de 0.7 my una altura de 1 metro?

Debemos calcular el área de superficie de un tanque cilíndrico cerrado

radio = 0.7 m

Altura = 1 m

La fórmula = 2πr (h + r)

Por eso,

= 2 × π × 0.7 (0.7 + 1)

= 7.47699 m²

Aproximadamente = 7.48m²

b) Debemos encontrar la capacidad del cilindro en m³

Esto significa que debemos calcular el volumen del cilindro.

= π × r² × h

= π × 0.7² × 1

= 1.53938 m³

Aproximadamente = 1.54 m³

Answer:

C) 1.5 in

Step-by-step explanation:

(7 + 1.5 + 1.5)(5 + 1.5 + 1.5) = 80

Answer:

20,12,24,16,30

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

b/c the only number that divide both is 4

Answer:

the answer is 1/81 I believe

Step-by-step explanation:

Answer:

[tex] \displaystyle \sin(x) + x\cos( \alpha ) + \rm C[/tex]

Step-by-step explanation:

we are given

[tex] \displaystyle \int \frac{ \cos ^{2} (x) - \cos ^{2} ( \alpha ) }{ \cos( x) - \cos( \alpha ) } dx[/tex]

we want to Integrate it

notice that, the denominator can be rewritten by using algebraic identity

remember that,

[tex] \displaystyle {a}^{2} - {b}^{2} = ( a + b)(a - b)[/tex]

therefore

rewrite the denominator by using the identity:

[tex] \displaystyle \int \frac{ ((\cos (x) + \cos ( \alpha) ) ( \cos(x) - \cos( \alpha ) ) }{ \cos( x) - \cos( \alpha ) }dx [/tex]

reduce fraction:

[tex] \displaystyle \int \frac{ ((\cos (x) + \cos ( \alpha) ) ( \cancel{ \cos(x) -\cos( \alpha ) ) }}{ \cancel{\cos( x) - \cos( \alpha ) } }dx[/tex]

[tex] \displaystyle \int \cos(x) + \cos( \alpha ) dx[/tex]

recall that,

[tex] \rm\displaystyle \int f(x) \pm g(x)dx =\int f(x) \pm \int g(x)dx[/tex]

by that

we get

[tex] \displaystyle \int \cos(x) dx + \int \cos( \alpha )dx [/tex]

we also know that,

[tex] \displaystyle \int \cos(x) = \sin(x)dx [/tex]

and also the Integration of a constant is always cx

so,

[tex] \displaystyle \sin(x) + x\cos( \alpha ) [/tex]

and of course we have to add constant

[tex] \displaystyle \sin(x) + x\cos( \alpha ) + \rm C[/tex]

Answer:

21 questions 50 cnet is the best

Step-by-step explanation:

Answer:

I got A and C on my half

but im not entirely sure

Step-by-step explanation:

:)

Answer:

10π or 31.4159265359

Step-by-step explanation:

Step-by-step explanation:

radius is 5

C = 2πr

C = 2(5)π

= 10π

= 31.42in

Answer:

Solution: [tex]4\frac{3}{4}[/tex], 3.5, -15, 5

Not a solution: 129 and [tex]10\frac{2}{3}[/tex]

Step-by-step explanation:

20 ≥ 5 + 3x

3x + 5 ≤ 20

3x ≤ 20 - 5

3x ≤ 15

x ≤ 5

x must be LESS than or EQUAL to 5

Answer:

$2,821.51

Step-by-step explanation:

The amount made be plumber = $51,482

rate of income tax = 5.5%

Therefore, amount of income tax in dollars and cents that would be paid by the plumber would be 5.5% of his amount made

= 5.5% of 51482

= (5.5/100)×51,482

= $2,821.51

Answer:

[tex]t=k+\frac{e}{2}[/tex]

Step-by-step explanation:

[tex]k=t-\frac{e}{2}\\t=k+\frac{e}{2}[/tex]

Answer:

The answer is D.

Step-by-step explanation:

It's D because a expression is numbers grouped together not just 1 number. Hope it helps and have a blessed day.

Answer:

B

Step-by-step explanation:

B is an equation, not an expression

Answer:

The correct answer is; Ann was on the call for 41 minutes.

Step-by-step explanation:

20-14.26 is equivalent to 5.74, in which you divide that by .14 (fourteen cents) and get 41.

Answer:

Options C and D are the correct options.

Step-by-step explanation:

Option A

cos(H) = 0.3846

By applying cosine rule in ΔFGH,

cos(H) = [tex]\frac{\text{Adjacent side}}{\text{Hypotenuse}}[/tex]

           = [tex]\frac{36}{39}[/tex]

           = 0.9231

False

Option B

cos(G) = 0.9231

By applying cosine rule in ΔFGH,

cos(G) = [tex]\frac{\text{Adjacent side}}{\text{Hypotenuse}}[/tex]

           = [tex]\frac{15}{39}[/tex]

           = 0.3846

False

Option C

sinG = 0.9231

By applying sine rule in ΔFGH,

sin(G) = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]

          = [tex]\frac{36}{39}[/tex]

          = 0.9231

True

Option D

tanG = 2.4

By applying tangent rule in ΔFGH,

tanG = [tex]\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]

        = [tex]\frac{36}{15}[/tex]

        = 2.4

True

Therefore, Options C and D are the correct options.

Answer:

The terminal side of angle will lie in thirds quadrant

Step-by-step explanation:

Given the angle is 28.3 degree radians

Converting it into degrees we get -

28.3rad × 180/π = 1621.471°

Total 360 degrees rotation in this angle

1621.471°/360 = 4

SO the remaining degrees 181.471

The angle grater than 180 lies in third quadrant.

The terminal side of angle will lie in thirds quadrant

Answer:

3,330

Step-by-step explanation:

you multiply 74 and 45

Answer:

3,330 words

Step-by-step explanation:

Hildie can type 74 words per MINUTE. And we know she typed for 45 minute, so we can just multiply 74 and 45.

Answer:

ML/OP=MK/PN since sides of similar traingle are proportional

17/60=35/PN

PN=35×60/17=123.529=123.6 or 124

The measure of the side PN is 123.5.

Similar triangles are those triangles which has the same shape but different size.

The length of sides and angles are proportional in similar triangles

Given that triangle KLM is similar to triangle NOP.

If two triangles are similar, then their corresponding sides will be proportional.

From the figure,

Corresponding side of LM is PO.

Corresponding side of MK is NP.

Corresponding side of LK is ON.

So LM / PO = MK / NP = LK / ON

17 / 60 = 35 / PN = LK / ON

We need the length of PN.

17 / 60 = 35 / PN

17 × PN = 60 × 35

PN = (60 × 35) / 17

PN = 123.5

Hence the measure of the side of the triangle is PN = 123.5.

To learn more about Similar Triangles, click :

https://brainly.com/question/14926756

#SPJ2

Answer:

1. 2, 2. 1,  3. 5/4

Step-by-step explanation:

slope formula = [tex]\frac{y2 - y1}{x2 - x1}[/tex]

1. 0 - 4/0 - 2 = 2

2. 1 - 4/1 - 4 = 1

3. -2 - 3/-3 - 1 = 5/4

Answer: I believe it is

Step-by-step explanation: if you add 3x + 3x you get 6x. You would then add the like terms which are x + x ( x is equal to one) and that to 6x and you get 8x then add 2+2=4 and you get 8x + 4

Answer:

80°

Step-by-step explanation:

If the intercepted arc is 80°, the angle has to be 80°

Answer:

I think...

Step-by-step explanation:

D(-4,-2) E(-2,0) F(-1,-4)

Answer:

yes

Step-by-step explanation:

Answer:

it's your answer

Step-by-step explanation:

plz make me barinly least

Answer:

I am pretty sure the answer is  64

Step-by-step explanation

Volume=lxwxh

4x4x4=64

Answer:

The slope othe line is - 1

Answer:

-1/4

Step-by-step explanation:

Answer:

area = 32 units²

Step-by-step explanation:

area = (4 x 10 x 0.5) + (2 x 2) + (2 x 2 x 0.5) + (6 x 2 x 0.5) = 32 units²