Answer:
10¹⁸ ergs
Step-by-step explanation:
From the question,
Using the expression
M = 
log(E/10¹³)................. Equation 1
Where M = Richter magnitude of earth quake, E = Energy released in ergs.
Given: M = 4.0
Substitute into equation 1 amd solve for E
4 = log(E/10¹³)
Log(E/10¹³) = (4×5)/4
Log(E/10¹³) = 5
E/10¹³ = 10⁵
E = 10⁵×10¹³
E = 10⁵⁺¹³
E = 10¹⁸ ergs
Answer:
Lucy had 40 books last year.
Step-by-step explanation:
assuming 100% is the percent;
100% + 70%
100 : x
170 : 68
cross multiply = 170x = 100 x 68
-------- ————-
170 170
cancel 170/170
therefore x = 100 x 68 divided by 170
result is 40
Answer: Yup. This is right. 68 with a remainder of 20.
Step-by-step explanation:
Nice long division and nice hand writing :)
1.23÷10 = 0.123 is a true statement
Given the expression 1.23÷10, we need to<u> check if the expression is equal to 0.123</u>
<h3>Fractions</h3>
Fractions is a ratio of two integers a/b
Given
Convert the decimal to a fraction as shown:
The expression becomes:
= 123/100 * 1/10
= 123/1000
Convert back to decimal
1.23÷10 = 0.123
This shows that 1.23÷10 = 0.123 is a true statement
Learn more on division here: brainly.com/question/12957834
Step-by-step explanation:
Find the unit rate of each pair of socks for the dozen. 12/9=1.3333
so then multiply 18 by 1.33 to get 23.92. So you could sell the 18 pair pack of socks for anything less than $23.92
Hope this helps ^-^
