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3 years ago

Each food level has about ________ % less energy because of the energy lost in other levels.

Mathematics

2 answers:

Leya [2.2K]3 years ago

8 0

Answer:

Within all biological communities, energy at each trophic level is lost in the form of heat (as much as 80 to 90 percent), as organisms expend energy for metabolic processes such as staying warm and digesting food (see biosphere: The organism and the environment: Resources of the biosphere: The flow of energy).

Dafna1 [17]3 years ago

5 0

Answer: About 90% is lost through heat.

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Autry made 45% of the shots he took during the basketball game. If he attempts 20 shots how many times did he score?

ratelena [41]

Answer:

9 shots

Step-by-step explanation:

convert 45% into decimal form

0.45*20

9 shots

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3 years ago

Jamal has been approved for $125,000 loan, 30-year mortgage with an APR of 5.3%. He made a 10% down payment and is closing on Ap

Alex17521 [72]

Answer:

Step-by-step explanation:

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4 years ago

Read 2 more answers

Factor completely h^3+2h^2-9h-18

guapka [62]

Step 1: Group this into two groups:

$h^3 + 2h^2-9h-18=(h^3 + 2h^2)+(-9h-18)$

When you do that, be sure to group the "–" into the group with the 9 and make sure there's "+" between the groups.

Step 2: Factor out the GCF from both individual groups:

$(h^3 + 2h^2)+(-9h-18) = h^2 (h+2) -9(h+2)$

Step 3: Notice both groups have that (h+2)? That's a new GCF between the two groups, so factor that out:

$h^2 (h+2) -9(h+2) = (h+2)(h^2-9)$

Step 4: That $(h^2-9)$ piece can be factored further, since it's a difference of squares:

$(h+2)(h^2-9) = (h+2)(h+3)(h-3)$

Now it's factored.

8 0

3 years ago

ruth had a ribbon that was 9 yards long. she cut the ribbon into pieces that were 1/6 yard long. how many pieces of ribbon does

Ainat [17]

Answer:

Step-by-step explanation:

6 x 9 = 54

she can there are

make 6 9 yards

ribbons

out of

a yard

4 0

3 years ago

In △ABC , m∠A=53°,m∠B=17°, and a=27. Find the perimeter of the triangle.

sdas [7]

Using the Law of Sines (sinA/a=sinB/b=sinC/c) and the fact that all triangles have a sum of 180° for their angles.

The third angle is C is 180-53-17=110°

27/sin53=b/sin17=c/sin110

b=27sin17/sin53, c=27sin110/sin53

And the perimeter is a+b+c so

p=27+27sin17/sin53+27sin110/sin53 units

p≈68.65 units (to nearest hundredth of a unit)

6 0

3 years ago