An element's identity is determined by the number of

Mathematics

1 answer:

Rashid [163]3 years ago

6 0

Answer:

number of protons

Step-by-step explanation:

The identity of an element is determined by the number of protons. One cannot alter the number of protons without altering the identity of the element. By adding a proton, the atomic number increases by one and the element identity changes. Number of neutrons can be altered to create isotopes.

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#10

amm1812

Answer:

There are 3 green marbles in the box.

Step-by-step explanation:

15% = 0.15

To figure out how much 15% of 21 is, you must multipl the decimal form of the percentage by the whole number. This will give you how much of that number that percentage is.

0.15 * 21 = 3.15

But you can't have 0.15 of a marble, so you must round as well.

3 green marbles in the box.

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3 years ago

If the following is a polynomial function, then state its degree and leading coefficient. If it is not, then state this fact. f(

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Answer:

Step-by-step explanation:

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3 years ago

miss Kelly's son storage closet is 3 feet long 3 feet wide and 7 feet high she. can she fit 67 boxes that each have one volume o

noname [10]

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Because 63 is less than 67, she can not fix 67 boxes in her closet.

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4 years ago

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US consumers are increasingly using debit cards as a substitute for cash and checks. From a sample of 100 consumers, the average

scoray [572]

Answer:

A. Margin of error = 128.79

B. The 99% confidence interval for the population mean is (7661.21, 7918.79).

Step-by-step explanation:

We have to calculate a 99% confidence interval for the mean.

The population standard deviation is know and is σ=500.

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