The change from 3/4 to 4/10 is found by obtaining and applying the LCD:
15/20 to 8/20 is a negative change, and the amount of the change was -7/20.
We compare this result to the original value, 15/20, to obtain the percentage change in the fraction:
-7/20
----------- = -7/15 = -0.467 => -46.7%
15/20
Answer:
1. 74 because 8(10) - 6
2.4(4) - 5(3) = 1
3. 7(3)+8(4) * 2 = 106
4. A
5.a
6. 20.5
7.26
8.a
9.a
10a
Step-by-step explanation:
The sequence is infinite because the exponents 2 ,3 ,4 ,... go on infinitely.
That next number in the equence is obtained by multiplying each term by ab.
the sixth term is 2a^(6)b^(5)
Answer:
The babies massed in total 7.41 kg
Step-by-step explanation:
we know that
To find out the total mass, sum Adrian's mass and Chang's mass
so
The total mass is equal to
therefore
The babies massed in total 7.41 kg
Answer:
<em>The food chain showing seven organisms can be drawn as follows:
</em>
<em>
</em>
<em>Plants → grasshoppers → mice → frog → snakes→ eagles → decomposers
</em>
<em>
</em>
<em>The plants are the primary source of food in a food chain or a food web. The animals which feed on plants will be termed as herbivores or primary consumers like the grasshopper. The organisms feeding on primary consumers will be the secondary consumers like mice.
</em>
<em>
</em>
<em>An energy pyramid for three of the organisms can be shown as follows:
</em>
<em>
</em>
<em> mice (10 kilocalories)
</em>
<em>
</em>
<em> ↑
</em>
<em>
</em>
<em> Grasshoppers (100 kilocalories)
</em>
<em>
</em>
<em> ↑
</em>
<em>
</em>
<em> Plants ( 1000 kilocalories)
</em>
<em>
</em>
<em>As the energy pyramid shows, only about 10% of the energy travels from one trophic level to another.</em>
