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wlad13 [49]
3 years ago
6

In Las Vegas, Nevada, stores charge a 4.6% state sales tax and a 3.65% county sales tax. Yuki is purchasing a

Mathematics
1 answer:
cluponka [151]3 years ago
7 0

Answer:

$18.15

Step-by-step explanation:

Given that price before tax = $220

State sales tax rate = 4.6%

Dollar amount of state sales tax,

= 4.6% x $220

= 0.046 x 220

= $10.12

County sales tax rate = 3.65%

Dollar amount of state sales tax,

= 3.65% x $220

= 0.0365 x 220

= $8.03

Total amount of sales tax = $10.12 + $8.03 = $18.15

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Jack orders a salad with 2 dressings for lunch. There are 13 dressings to choose from. How many different ways can he select a s
Bumek [7]

Answer:

26 different ways of selecting a salad

Step-by-step explanation:

multiply 13 times 2 to find the number of possibilities

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3 years ago
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I have no idea sorry i figure it out brb
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When conducting a survey about choosing vacation destinations, Michele should ________ in order to get reluctant respondents to
astra-53 [7]

When conducting a survey about choosing vacation destinations, Michele should <u>assure people that their individual responses will be kept confidential</u> in order to get reluctant respondents to provide honest information.

Making sure that people's survey responses are clearly confidential will cross a protracted manner to ensure that you acquire a greater variety of finished responses and that the answers are greater honest.

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7 0
2 years ago
Is 3/6 14/28 16/32 17/34 a proportional relationship
NNADVOKAT [17]

Answer:

Not proportional

Step-by-step explanation:

3/6=1/3

14/28=1/2

16/32=1/3

17/34

7 0
3 years ago
Question Details
Sliva [168]

Answer:

Atomic mass unit-

It is represented by ‘amu’. It is equal to the quantity 1/12th mass of an atom of C-12.

Actual mass of one atom of C-12 = 1.9924 x 10-23 gm. = 1.9924 x 10-26 Kg.

1 amu = 1.9924 x 10 -23/12 = 1.66 x 10 -24 gm. = 1.66 x 10 -27 Kg.

Atomic mass of an element = mass of one atom of the element / 1 amu

Actual mass of an element = atomic mass of an element in amu x 1.66 x 10 -24 gm.

For ex-

Actual mass of hydrogen atom = 1.008 x 1.66 x 10 -24 gm. = 1.6736 x 10-24 gm.

Actual mass of oxygen atom = 16.00 x 1.66 x 10 -24 gm. = 2.656 x 10-23 gm.

Average Atomic weight (Mass)-

“The Average Atomic Masses of many elements are determined by multiplying the atomic mass of each isotope by its fractional abundance and adding these values and then dividing it by 100.”

Ex.- Naturally occurring carbon contains three isotopes – C12 (98.892 % abundance), C13 (1.108 % abundance), C14 (2 x 10-10 % abundance).The relative atomic masses of these isotopes are 12.000, 13.00335 and 14.00317 amu respectively.

Average atomic mass = % of I isotope x its atomic mass + % of II isotope x its atomic mass +% of III isotope x its atomic mass/100

= 12 x 98.892 + 13.00335 x 1.108 + 14.00317 x 2 x10-10 /100

Average atomic mass= 12.011 amu

Molar volume –

Molar volume of a substance is volume occupied by 1 mole of that substance .

Molar volume of solid or liquid = molar mass / density

Molar volume of ideal gas at 00C or 273 K and 1 atmosphere pressure is 22.4 litre.

Gram atomic mass(weight) or gram atom –

“Gram atomic mass(weight) of an element is the mass of Avogadro number ( 6.023 x 1023 ) of atoms of that elements in grams.”

Ex –

mass of 1 atom of oxygen = 16 amu = 16 x 1.66 x 10-24 gm

Mass of 6.023 x 1023 atoms of oxygen= 16 x 6.023 x 1023 x 1.66 x 10-24 = 16 gm.

Hence, Gram atomic weight of oxygen = 16 gm.

No. of gram atoms = mass of element in gm / atomic mass of element in gm.

7 0
3 years ago
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