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denis-greek [22]
3 years ago
15

Plzzzzzzzz help right answer gets brainly

Mathematics
2 answers:
Feliz [49]3 years ago
8 0

Answer:

it the first one

Step-by-step explanation:

I'm sorry if worng

Ratling [72]3 years ago
4 0

Answer:

5x10^{9} is scientific notation for 5,000,000,000

Step-by-step explanation:

5,000,000,000= 5x 1,000,000,000

= 5x 10^{9}

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15 is what percent of 70​
podryga [215]

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21%

Step-by-step explanation:

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3 years ago
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The library has 65400 art books and 9600 science books. What part of all the books are science books
suter [353]

Answer:

9,600/75,000, 16/125

Step-by-step explanation:

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3 years ago
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A large stand of fir trees occupies 24 hectares. The trees have an average density of 1 tree per 20m squared. A forester estimat
Leona [35]

Answer:

The yield of the stand if one-tenth of the trees are cut is 360000 board-feet.

Step-by-step explanation:

First, let is find the total amount of fir trees that occupies the area of 24 hectares. (1 hectare = 10000 square meters)

n = \sigma \cdot A

Where:

\sigma - Surface density, measured in trees per square meter.

A - Total area, measured in square meters.

Given that \sigma = \frac{1}{20}\,\frac{tree}{m^{2}} and A = 24\,h, the total amount of fir trees is:

n = \left(\frac{1}{20}\,\frac{trees}{m^{2}}  \right)\cdot (24\,h)\cdot \left(10000\,\frac{m^{2}}{h} \right)

n = 12000\,trees

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n_{c} = 0.1 \cdot n

n_{c} = 0.1 \cdot (12000\,trees)

n_{c} = 1200\,trees

If each tree will yield 300 board-feet, then the yield related to the trees that are cut is:

y = S\cdot n_{c}

Where:

S - Yield of the tress, measured in board-feet per tree.

n_{c} - Amount of trees that will be cut, measured in trees.

If n_{c} = 1200\,trees and S = 300\,\frac{b-ft}{tree}, then:

y = \left(300\,\frac{b-ft}{tree} \right)\cdot (1200\,trees)

y = 360000\,b-ft

The yield of the stand if one-tenth of the trees are cut is 360000 board-feet.

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3 years ago
What is the equation of the line passing through the point (-3,1) that is perpendicular to the line 2x+y=0
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look at the picture shown

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A sign posted at a roller coaster states that all riders must be atleast 48 inches tall in order to ride the coaster. Write an i
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X <span> ≥ 48

"At least" is another way of saying "greater than or equal to".</span>
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