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r-ruslan [8.4K]
3 years ago
9

Pls help me I idk how to do this anyone who helps gets a like but u have to tell the answer and pls explain find volume

Mathematics
1 answer:
IRISSAK [1]3 years ago
6 0

Answer:

13(4++3-+$++3++3;3--+3;

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a street light is at the top of a 18 ft tall pole. a woman 6 ft tall walks away from the pole with a speed of 4 ft/sec along a s
shutvik [7]

The most appropriate choice for similarity of triangles will be given by -

Speed of tip of the shadow of woman  = 6 ft/s

What are similar triangles?

Two triangles are said to be similar, if the corrosponding angles of the triangles are same and the corrosponding sides of the triangles are in the same ratio.

Here,

The diagram has been attached here

Let the distance of woman from the pole be x ft and the distance of tip of the shadow to the pole be y ft.

Height of street light = 18 ft

Height of woman = 6ft

The two triangles are similar [As height of woman is parallel to the height of pole]

\frac{y - x}{6}=\frac{y}{18}\\18y - 18x = 6y\\18y - 6y = 18x\\12y = 18x\\y = \frac{18}{12}x\\y = \frac{3}{2}x\\

To find the speed, we have to differentiate both sides with respect to time 't'

\frac{dy}{dt} =\frac{3}{2}\frac{dx}{dt}\\\frac{dy}{dt}=\frac{3}{2} \times 4\\\frac{dy}{dt} = 6

Speed of tip of her shadow = 6 ft

To learn more about similarity of triangles, refer to the link-

brainly.com/question/14285697

#SPJ4

6 0
1 year ago
If you were 2 years old in 2011 how old would you be in 2020?
Roman55 [17]

Answer:

11 years

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2 years that you were in 2011

2020-2011= 9

2+9=11

also meaning they were born in 2009

2020-2009 also equals 11

this prolly doesnt make sense but hope it helps :) <3

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2 years ago
Read 2 more answers
Polynomial function F(x)=2-11x+2x²​
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Answer:

should be 4

Step-by-step explanation:

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3 years ago
I also need help with this one, simplifying this radical expression. This ones weird.
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Factorise numerators/ denominators where possible

3x² - 4x + 1 = (x - 1)(3x - 1)

x² - 1 ← is a difference of squares and factors as

x² - 1 = (x - 1)(x + 1)

Expressing the product in factored form

\frac{(x-1)(3x-1)}{(x-1)(x+1)} × \frac{x+1}{3x-1}

Cancel common factors on numerator/denominator, that is

Cancel (x - 1) , (x + 1) and (3x - 1), leaving the simplified form 1

7 0
3 years ago
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Dan bought 24 pounds of sugar for $10. how many dollars did he pu per pound of sugar
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Step-by-step explanation:

10÷24= .41 cents per pound

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