1. Answer: 4.5 hour
The equation for time needed to prepare the diner is H/6 + H/18 = 1
To solve this question, you have to equalize the denominator of the equation. The greatest common multiple of 6 and 18 is 18, so you have to change the denominator to 18. The calculation would be:
H/6 + H/18 = 1
H/6 * 3/3 + H/18 = 1
3H/18 + H/18 = 1
4H/18 = 1
H= 18/4= 4.5
2. Answer: 9.2 grams
Halley measured samples of a metallic substance for an experiment on density with equipment that has lowest unit 1/10 gram or 0.1 gram. The equipment should not be able to differentiate unit lower than 0.1 gram, so it is not possible to have result such as 9.24 grams. or 9.244 grams.
3. To find the formula to find length of a rectangle from its perimeter you need to move the length(l) into the left of the equation. The calculation would be:
p = 2L + 2w
p-2w=2L
2L= p-2w
L=1/2p -w
The equation of I is right, but the equation of II and III is not.
I. L= 1/2p - w ----> right
II. L=(p - 2w) ---> wrong, should be 2L=(p - 2w)
III. L= P-2w / 2---> wrong, should be L= (P-2w)/ 2
Answer:
magma
Explanation:
When underwater volcanoes erupt, they shoot out magma into the ocean. Sometimes, this magma hardens and forms islands.
Answer:
Traits are determined by genes, and also they are determined by the interaction with the environment with genes.
Explanation:
And remember that genes are the messages in our DNA that define individual characteristics. So the trait is the manifestation of the product of a gene that is coded for by the DNA.
Answer: option A
Explanation: As demonstrated by the Hardy-Weinberg principle, the dominance or recessiveness of an allele does not determine its frequency in a population.
Answer:
Explanation:
As Insects excrete uric acid and it require 1 gram of water for its excretion so it conserve water in this way
