3 years ago

How many atoms is 4.00 grams of iron (Fe)?

Mathematics

1 answer:

Minchanka [31]3 years ago

5 0

Answer:

226

Step-by-step explanation:

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I can’t find this answer, help me plss

Vinvika [58]

2) 7/4×(22–x) =0

soln

= 7/4×(22 –x) =0

= 1.75 ×22 –x =0

= x=38.5

9) 15x² /7 =8x²/5

soln

= 15x²×8x²=7×5

=120x^4 = 35

= x^4 =120–35

x^4 =85

6) 9x²/4–4=0

soln

=9x²/4–4=0

=2.25–4=0

=4–2.25=0

=1.75

<h2>sorry I know that much </h2>

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3 years ago

Sally has seventy dollars to spend on eight books. After buying them she had thirteen dollars. How much did each book cost?

Anit [1.1K]

Answer:

7.13 each

Step-by-step explanation:

70 - 13 = 57. Divide 57/8 and get your answer

(7.125 rounded is 7.13)

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3 years ago

Read 2 more answers

A shelf of books at the library can hold 60.5 pounds of books.

KengaRu [80]

Atleast 302.5 can fit on the shelves

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3 years ago

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A bag of marbles has 6 red marbles and 7 green marbles in it. What is the percent probability of pulling a green marble out of t

soldi70 [24.7K]

Answer:

If a bag contains 4 red marbles, 3 blue marbles, and 7 green marbles and a marble is randomly selected from the bag, what is the probability that it is blue? P=3/(3+4+7)=3/14 because each of 14 marbles is equally likely to be drawn.

Step-by-step explanation:

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3 years ago

Gregory predicts that 310 people will attend the spring play. There was an actual of 220 people who attended the spring play.wha

tia_tia [17]

The percent error is 29%. I posted the equation for percent error on your other question.

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3 years ago