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svetlana [45]
3 years ago
11

A laboratory has a 75-gram sample of radioactive material.

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
8 0
Be more specific for yssss !!
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Rita and Tina each make $11 an hour working as cashiers at a supermarket. Last week, Rita worked r hours while Tina worked t hou
soldier1979 [14.2K]
The cost per hour is $11, at that point, the coefficient of the quantity of hours Rita and Tina had worked. With respect to Rita, she will get an additional $32 level wage for her extra hours. It wont be duplicated any further. Mathematically: 

Rita's Total Wages = 11r + 32

Tina's Total Wages = 11t
3 0
3 years ago
An atom has a charge of +1. If the atom's nucleus contains 23 protons, the atom must have
Ymorist [56]
If an atom has a let's say, +2 charge, it will mean that the atom has two more protons than electrons. Protons have +1 charges and electrons have -1 charges. So, said this, if you had one more proton than an electron, it would be a -1 charge. Because of this, if an atom had a +1 charge, it would have to have one more proton than electrons. So, the answer could be "the atom must have 22 electrons" but, the question is sort of vague? It could really be anything.
4 0
3 years ago
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Whats the difference between a subset and a proper subset? {5,8} {2,5,8} Is {5,8} a subset of {2,5,8}.
valina [46]

Answer:

\{5,8\} is a subset of \{2,5,8\}

Step-by-step explanation:

Required

Difference between subset and proper subset

To answer this question, I will use the following illustration.

A = \{1,2,3\}

B = \{2,3\}

C = \{1,2,3\}

In the above sets, set B is a proper subset of set A because all elements of B can be found in A, but not element of A can be found in B.

Set C is a subset of A because A = C

Using the above illustration, we have:

\{5,8\} and \{2,5,8\}

\{5,8\} is a subset of \{2,5,8\}, because 5 and 8 are in \{2,5,8\} but 2 which ca be found in \{2,5,8\} is not in \{5,8\}

8 0
2 years ago
Help please. thank you
tatyana61 [14]
I think it D cause 30(cos(30x)+14=-16
Your dividing by 30
your 180 (which is degrees) is
radians. As the cosine function is periodic with period 2 we get

6 0
3 years ago
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Hey.........................
motikmotik

Answer:

hi........................................

8 0
3 years ago
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