We go from 10x+20 = 50 to 10x = 30 after we subtract 20 from both sides. So we use the subtraction property (of equality).
Answer: Choice D
brainly.com/question/5027087Let C, S and H be the diameters of cell, sand and hair
Diameter of a cell:
Diameter of a grain of sand:
Part A:
meters, because it takes 5 movements right of the decimal dot, until there is only one digit to its left.
Part B:
we are comparing
to
,
thus S is 20 times larger than C
Part C
thus,
Part D.
thus 300 nm are written in meters as follows:
Using it's concept, it is found that there is a 0.5 = 50% probability that one of the fair number cubes is a 1.
<h3>What is a probability?</h3>
A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.
The outcomes of the pair of cubes that result in a sum of 5 are as follows:
(1,4), (2,3), (3,2), (4,1).
Of those 4 outcomes, 2 involve a number 1, hence the probability is given by:
p = 2/4 = 0.5.
More can be learned about probabilities at brainly.com/question/14398287
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It is still 99 Hundredths as a decimal.