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3 years ago

6

The house sparrows population has decreased by 41% since 1977. The population is now approximately 6.5 million pairs of birds. W

hat was the estimated sparrow population in 1977?

1 answer:

BlackZzzverrR [31]3 years ago

5 0

Let x be estimated population in 1977

x - 0.41x = 6,500,000
x = (6,500,000 / 0.59

Answer is approximately 11,017,000

11 million

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Value of this problem?

Rudik [331]

$\frac{4^3\times4^{-1}\times5^{-2}}{4^4\times5^{-3}\times5^0}=\frac{4^{3-1}\times5^{-2}}{4^4\times5^{-3+0}}\\=\frac{4^{2}\times5^{-2}}{4^4\times5^{-3}}=4^{2-4}\times5^{-2-(-3)}\\=4^{-2}\times5^{1}=\frac{5}{4^2}\\=\frac{5}{16}$

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3 years ago

Determine the value of x.

kvasek [131]

Answer:

25°

Step-by-step explanation:

The angle of a right triangle is always 90°. 90-35=51. 25 times 2 is 50 plus 1 is 51, so x is 25°.

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3 years ago

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Which figure shows an example of symmetry?<br> A.<br> B.<br> C.<br> D.

Burka [1]

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D

Step-by-step explanat:

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3 years ago

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A telephone pole is 24 feet tall. Curtis, who is standing some distance away from the telephone pole measures the angle of eleva

taurus [48]

The distance from the base of the telephone pole to Curtis is about 15 feet.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more number and variables.

Trigonometric ratio is used to show the relationship between the sides and angles of a right angled triangle.

Let d represent the distance from the base of the telephone pole to Curtis, hence:

tan(51.4) = (24 - 5.2) / d

d = 15 feet

The distance from the base of the telephone pole to Curtis is about 15 feet.

Find out more on equation at: brainly.com/question/2972832

#SPJ1

4 0

2 years ago

Convert 0.533333... to a fraction.<br> (only the 3 is repeating)<br><br> Please show the work!!

amm1812

<span>Let x = 0.5333333333 ...

So 100x = 53.3333333333 ...
and 10x = 5.3333333333 ...
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90x = 53 – 5 = 48.

So x = 48/90 = 8/15 after reduction to lowest terms (by factor of 6)
0.3333... = ⅓. and that 0.5 = ½.

So 0.533333... = 0.5 + 0.0333333...0.5 + 0.3333.../10 = 1/2 + (1/3)/10 = 1/2 + 1/30 = 16/30 = 8/15</span>

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3 years ago