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3 years ago

Of all the species in the world, 4 out of every 5 are insects what percentage of species are insects

Mathematics

1 answer:

Fiesta28 [93]3 years ago

5 0

Answer:

80%

Step-by-step explanation:

So you basically, just make it a ratio. Since a percentage is out of 100, just make the 5 into 100. To get 5 to 100, you times 20. Then you do the same thing to the 4 which you get 80.

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The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y.

Dmitrij [34]

The relationship between wavelength and frequency is expressed by the equation λν=c where λ is the wavelength, v is the frequency and c is the speed of light which has a value of 3x10^8 m/s.

λν=c
λ(3 × 10^9)= 3x10^8
λ = 0.1 m

Hope this answers the question.

7 0

3 years ago

Read 2 more answers

EXTRA POINTS PLS HELP WILL MARK BRAINLIEST :)

disa [49]

Answer:

1 is a parallelagram

Step-by-step explanation:

its a parallelogram because al the sides are equal and its leads to an positive angle measurement

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3 years ago

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For an upcoming field trip to the science center, the school will allow students to select one extra activity. The school survey

Pani-rosa [81]

The total amount that would be spent on all the activities is $1605.40.

<h3>What is the total amount?</h3>

The total amount that would be spent on movies = (14/25) x 1200 x 1.55 = $1041.60

The total amount that would be spent on planetarium tickets = (7/25) x 1200 x 1.05 =352.80

The total amount that would be spent on backstage passes = (4/25) x 1200 x 1.10 =211.20

Total amount = 211.20 + 352.80 + $1041.60 = $1605.40

Please find attached the complete question. To learn more about addition, please check: brainly.com/question/349488

7 0

2 years ago

3.89×10^9 in standard form

Tanya [424]

Answer:

3890000000

Step-by-step explanation:

7 0

3 years ago

Find the dot product of the position vectors whose terminal points are (14, 9) and (3, 6).

erma4kov [3.2K]

Answer:

Step-by-step explanation:

The formula for the dot product of vectors is

u·v = |u||v|cosθ

where |u| and |v| are the magnitudes (lengths) of the vectors. The formula for that is the same as Pythagorean's Theorem.

$|u|=\sqrt{14^2+9^2}$ which is $\sqrt{277}$

$|v|=\sqrt{3^2+6^2}$ which is $\sqrt{45}$

I am assuming by looking at the above that you can determine where the numbers under the square root signs came from. It's pretty apparent.

We also need the angle, which of course has its own formula.

$cos\theta=\frac{uv}{|u||v|}$ where uv has ITS own formula:

uv = (14 * 3) + (9 * 6) which is taking the numbers in the i positions in the first set of parenthesis and adding their product to the product of the numbers in the j positions.

uv = 96.

To get the denominator, multiply the lengths of the vectors together. Then take the inverse cosine of the whole mess:

$cos^{-1}\theta=\frac{96}{111.64676}$ which returns an angle measure of 30.7. Plugging that all into the dot product formula:

$u*v=\sqrt{277}*\sqrt{45}cos(30.7)$ gives you a dot product of 96

6 0

3 years ago