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3 years ago

0.002191 in scientific notation

Mathematics

2 answers:

Vera_Pavlovna [14]3 years ago

8 0

0.002191 in scientific notation
2.191 × 10-3

miskamm [114]3 years ago

5 0

Answer:

2.191 · $10^{-3}$

Step-by-step explanation:

0.002191

2.191 · $10^{-3}$

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A number is chosen at random from 1 to 25. Find the probability of selecting an odd number or multiples of 5. *

Ymorist [56]

Answer:

Odd number: 13/25 (52%)

Multiples of 5: 5/25 (20%)

Step-by-step explanation:

There are 13 odd numbers between 1 and 25 so you have a 13/25 chance which is 52% (13/25 = 0.52). There are 5 multiples of 2 between 1 and 25 so you have a 5/25 chance which is 20% (5/25 = 0.2).

8 0

3 years ago

Look at the picture below to answer the question!! plss

laila [671]

Answer:

x = 15.3°

Step-by-step explanation:

Trig identities:

$sin(x)=\dfrac{O}{H} \ \ \ \ \ cos(x)=\dfrac{A}{H} \ \ \ \ \ tan(x)=\dfrac{O}{A}$

where

x = angle
O = side opposite the angle
A = side adjacent the angle
H = hypotenuse

$sin(46)=\dfrac{11}{x}\\\\\implies x=\dfrac{11}{sin(46)}\\\\\implies x=15.3$

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2 years ago

What is the approximate area of the shaded sector in the circle shown below

jeyben [28]

Answer: B

Step-by-step explanation:

The area of a circle is pi*radius^2. But only a diameter is given, so in order to find the radius, you must divide the diameter by 2:

3.6/2 = 1.8

Now, you can plug the radius, 1.8, into the equation pi*radius^2 ( $\pi r^{2}$ ):

$\pi (1.8)^2 = \pi(3.24)$ = about 10.18

Lastly, you must divide the area 10.18 by 2 because you are looking for only half the area.

10.18/2 = 5.09

6 0

3 years ago

Question 1

blondinia [14]

50 percent because 10 cars would be 100 percent so 5 cars would be 50 percent you just have to find the half

5 0

3 years ago

Percents

Klio2033 [76]

It should be A if i am correct

3 0

2 years ago

Read 2 more answers