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2 years ago

Out of 28 teenagers and adults, people, 12 adults attended a music concert. what is the ratio of teenagers to attendees?

Mathematics

1 answer:

Naddika [18.5K]2 years ago

5 0

Answer:

I believe it would be 14 to 28

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The dimensions of a closed rectangular box are measured as 97 cm, 67 cm, and 34 cm, respectively, with a possible error of 0.2 c

Dahasolnce [82]

Answer:

The maximum error in calculating the surface area of the box is $158.4 \:cm^2$ .

Step-by-step explanation:

Differentials are infinitely small quantities. Given a function $y=f(x)$ we call $dy$ and $dx$ differentials and the relationship between them is given by,

$dy=f'(x) \:dx$

If the dimensions of the box are $l$ , $w$ and $h$ , its surface area is $A=2(wl+hl+hw)$ and

$dA=\frac{\partial A}{\partial l}dl+\frac{\partial A}{\partial w}dw+\frac{\partial A}{\partial h}dh\\\\dA=2(w+h)dl+2(h+l)dw+2(w+l)dh$

To find the largest error in the surface area, we therefore use $dl=0.2, dw=0.2, dh=0.2$ together with $l=97, w=67,h=34$

$dA=2(w+h)dl+2(h+l)dw+2(w+l)dh\\\\dA=2(67+34)\cdot 0.2+2(34+97)\cdot 0.2+2(67+97)\cdot 0.2\\\\dA=158.4 \:cm^2$

An error of 0.2 cm in each dimension could lead to an error of $158.4 \:cm^2$ in the calculated surface area.

3 0

3 years ago

Calculator

rodikova [14]

Solution:

First, let's find the surface area of the triangular prism.

2(1/2 x 8 x 12) + 2(10 x 6) + (12 x 6) = Surface area of triangular prism
=> (8 x 12) + 2(60) + (72) = Surface area of triangular prism
=> (96) + 120 + 72 = Surface area of triangular prism
=> 96 + 192 = Surface area of triangular prism
=> 288 ft² = Surface area of triangular prism

Now, let's find the surface area of the rectangular prism.

2(18 x 9) + 2(6 x 9) + 2(6 x 18)
=> 2(162) + 2(54) + 2(108)
=> 324 + 108 + 216
=> 2(324) = 648 ft²

Now, add both the surface areas to find the surface area of the figure.

288 + 648 = Surface area of figure
=> 936 ft² = Surface area of figure

The surface area of the figure is 936 ft².

7 0

2 years ago

Use long division to find the value of 1,875÷5.

Naddik [55]

Answer:

375

Step-by-step explanation:

I have a specific way to find this but I can't exactly explainit, I only know how to show, so sorry if that is useless, I am not very helpful

3 0

3 years ago

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F(x)=-x^2+19 Find f(3)

Arturiano [62]

Answer:

f(3) = 10

Step-by-step explanation:

f(x)=-x^2+19

Let x= 3

f(x)=- (3)^2+19

= -9 + 19

= 10

8 0

3 years ago

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AlekseyPX

Answer:

Step-by-step explanation:

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3 0

3 years ago