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antiseptic1488 [7]
3 years ago
9

Choose all the answers that apply. Which of the following is an example of an ion? Ar Na+ F+ Cl-

Mathematics
2 answers:
lesya692 [45]3 years ago
7 0

Answer:

Na+ and Cl- should be examples of an ion.

<Hope I answered your question>

professor190 [17]3 years ago
3 0

Answer:

The answer would be Na+ and Cl-

I got this question at school

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Nancy wants to buy a sweater that is priced at $75. If the store is running a 60% off sale, what will be the
AleksAgata [21]

Answer:

$30.00

Step-by-step explanation:

The original price of the sweater is $75.00.  The new sale price is the original price of  100% less  60% of the original price.  That means the sales price is 40% of the original price.

You can do this 2 ways:

1.  $75 x 60% or .60 = $45

  $75-45 = $30

or

2.  $75 x 40% or .40 = $30

3 0
2 years ago
Find the value of x cubed minus 2x squared minus 7x + 5 of x=1/2-√3 ​
Svetach [21]

9514 1404 393

Answer:

  3

Step-by-step explanation:

For f(x) = x^3 -2x^2 -7x +5 and x=1/(2-√3), we have ...

  f(x) = ((x -2)x -7)x +5

and ...

  x = 1/(2-√3) = (2+√3)/(2^2 -3) = 2+√3

Then ...

  f(2+√3) = ((2 +√3 -2)(2 +√3) -7)(2 +√3) +5

  = (3+2√3 -7)(2+√3) +5

  = 2(√3 -2)(√3 +2) +5 = 2(3 -4) +5 = -2 +5

  f(1/(2 -√3)) = 3

_____

If you really mean x = (1/2) -√3, then f(x) = (42√3 -3)/8.

6 0
2 years ago
DETERMINE THE MISSING SIDE
MissTica

Answer:

21 in

Step-by-step explanation:

by the Pythagorean theorem we have

841=400+x^2\\\\x^2=441\\\\x=21

notice that the 841 and the 400 don't go squared because they already squared!

8 0
2 years ago
2767545 to the nearest ten
vovangra [49]
276550 hope this helps !
5 0
3 years ago
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Edward deposited ​$10,000 into a savings account 2 years ago. The simple interest rate is 4​%. How much money did Edward earn in
Allisa [31]

Answer: 10400

Step-by-step explanation:

4 0
3 years ago
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