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3 years ago

Express each number in scientific notation. 0.00000186

Mathematics

1 answer:

finlep [7]3 years ago

5 0

Answer:

Step-by-step explanation:

$0.00000186=1.86*10^{-6}$

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which of the following best describes a regular polygon when the measure of each exterior angle is 36 ?

zhenek [66]

Even though you have no choices listed:

Each Exterior Angle = Each Central Angle = (360 degrees) ÷ (Number of Sides)
Each Exterior Angle = (360 degrees) ÷ (Number of Sides)
(Number of Sides) = 360 / 36
Number of Sides = 10
a 10-sided polygon is a decagon

6 0

3 years ago

I could use help plz

guajiro [1.7K]

6.7
+ 26.87
______
33.57

7 0

2 years ago

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What percent of 153 is 81

Sav [38]

Answer:

Step-by-step explanation:

81/153 x/100

81•100=8,100

8,100/153

52.9

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3 years ago

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In a given year, the population of Metro City is 7420, and the population is decreasing by 152 people per year. The population o

Anit [1.1K]

Answer:

The correct option is D.

Step-by-step explanation:

Let x denote the years.

The information provided is:

The population of Metro City is 7420.
The population is decreasing by 152 people per year.
The population of Smallville is consistently 1200 less than half of Metro City.

From the provided data derive the equation for the population of Smallville x years after as follows:

$Y = [\frac{1}{2}\cdot (7420-152x)]-1200$

The population of Smallville is 2282 after x years.

Compute the value of x as follows:

$2282= [\frac{1}{2}\cdot (7420-152x)]-1200$

$\frac{7420-152x}{2}=2282+1200\\\\7420-152x=3482\times 2\\\\152x=7420-6964\\\\152x=456\\\\x=3$

Thus, the time it will take for Smallville's population to reach 2282 is 3 years.

The correct option is D.

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3 years ago

A pedestrian walks 7.4 kilometers west

attashe74 [19]

Answer: 11.8 km

Step-by-step explanation:

The resulting figure is a right angled triangle shown below

$Apply the Pythagorean theorem to find out the magnitude of the resultant vector $A B$ in the triangle $A B C$ as follows -$$\begin{aligned}&A B^{2}=B C^{2}+C A^{2} \text { (Hypotenuse }{ }^{2}=\text { Base }^{2}+\text { Adjacent }^{2} \text { ) } \\&=7.4^{2}+9.2^{2} \\&=139.4 \\&A B=11.806777 \\&\quad A B \approx 11.8 \mathrm{~km} \text { (Rounded off to the nearest tenth) }\end{aligned}$

3 0

2 years ago