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Elis [28]
3 years ago
11

Figures are similar. Find x.

Mathematics
1 answer:
katrin [286]3 years ago
8 0

Answer:

24.3

Step-by-step explanation:

18/20 = x/20 (similar triangles)

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A.The observation deck of tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the
Ainat [17]

Answer:

8.68 seconds

Step-by-step explanation:

Given:

Height of the deck above the street, s = 370 m

Since the condition is of free falling

thus,

initial speed, u = 0

Acceleration of the penny = acceleration due to gravity, g = 9.81 m/s²

Now,

from Newton's equation of motion, we have

s=ut+\frac{1}{2}at^2

here,

s is the distance

a is the acceleration

t is the time

on substituting the values, we get

370=0\times t+\frac{1}{2}\times9.81\times t^2

or

t² = 75.433

or

t = 8.68 seconds

8 0
3 years ago
Find the area of the regular polygon. Round your answer to the nearest tenth. 344.3 in.2 172.2 in.2 84.4 in.2 50.0 in.2
My name is Ann [436]
Area = \frac{a X p}{2}
Area = apothem times perimeter over 2



7 0
3 years ago
Please help me! Don't answer if you do not know
emmainna [20.7K]

What is the question ?


4 0
3 years ago
Please help as soon as possible!
AnnZ [28]

Answer:

D

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

To calculate m use the slope formula

m = ( y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (3, 6) and (x₂, y₂ ) = (8, 4)

m = \frac{4-6}{8-3} = - \frac{2}{5}, hence

y = - \frac{2}{5} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (8, 4), then

4 = - \frac{16}{5} + c ⇒ c = 4 + \frac{16}{5} = \frac{36}{5}

y = - \frac{2}{5} x + \frac{36}{5} ← equation of line

6 0
3 years ago
Read 2 more answers
PLEASE HELP I WILL MARK YOU BRAINLIEST
stira [4]

Answer:

1. <u>2448</u> do 612x4

2.she got <u>$23 </u>because he has four children and splits all do 72 divide by 4 and add 5 and thats ur answer

hope this helped

5 0
3 years ago
Read 2 more answers
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