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sattari [20]
3 years ago
9

What is the estimated age of Earth?

Mathematics
2 answers:
Studentka2010 [4]3 years ago
8 0

Answer:

4.54 billion years

Step-by-step explanation:

Scientists use the layers of rock of the Earth's crust/core to estimate how old is the earth.

Serhud [2]3 years ago
6 0

Answer:

4.543 billion years i think, i apologize if im wrong

Step-by-step explanation:

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Mr. Hughes gave 5/14
kow [346]

Answer:

His savings were of $4,200.

Step-by-step explanation:

Mr. Hughes gave 5/14 of his savings to his son, 2/3 of the remainder to his daughter, and the rest to his wife:

This means that the son and daughter amount is:

\frac{5}{14} + \frac{2}{3}(\frac{9}{14})

As \frac{9}{14} is the remained that his son did not get. So

\frac{5}{14} + \frac{2}{3}(\frac{9}{14}) = \frac{15}{42} + \frac{18}{42} = \frac{33}{42}

Fraction his wife got:

1 - \frac{33}{42} = \frac{42}{42} - \frac{33}{42} = \frac{9}{42}

If his wife got $900, what were his savings?

Total savings are x, wife got \frac{9}{42} of x. So

\frac{9x}{42} = 900

9x = 900*42

x = \frac{900*42}{9}

x = 100*42

x = 4200

His savings were of $4,200.

5 0
2 years ago
How can you find the area of an irregular polygon using area formulas?
algol [13]
Divide the polygon into separate shapes.  Like a rectangle and then a triangle.  
find the areas of those shapes and then add them together.

6 0
3 years ago
Please help ‼️ <br><br> Today's date is 28. What is half the date?
Lunna [17]
Answer: 14




Explanation:
8 0
3 years ago
Jill has $1.25 in her pocket. The money is in quarters and dimes. There are a total of 8 coins. How many quarters and dimes does
erica [24]

Answer:

  • 3 quarters
  • 5 dimes

Step-by-step explanation:

Let q represent the number of quarters (the higher-value coin). Then 8-q is the number of dimes, and Jill's total amount in change is ...

  0.25q +0.10(8-q) = 1.25

  0.15q + 0.80 = 1.25 . . . . . . . eliminate parentheses

  0.15q = 0.45 . . . . . . . . . . . . . subtract 0.80

  q = 3 . . . . . . . . . . . . . . . . . . . . divide by 0.15

  the number of dimes is 8-q = 8-3 = 5.

Jill has 3 quarters and 5 dimes.

5 0
3 years ago
Read 2 more answers
2 times what equals 56
wel
This is simple division to do this you must know you multiplication. However the answer is 28 ;)
8 0
3 years ago
Read 2 more answers
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