The solution of 25^(z - 4) = 125 is equal to a. Z = 5.5
25^(z - 4) = 125
From here we have to the ln of the equation
z-4 ln25 = ln125
z-4 (3.219)= 4.828
From here we have to multiply the equation
3.219z - 12.876 = 4.828
3.219z = 4.828 + 12.876
When we divide this equation by 3.219
We have z = 5.499
Hence z = 5.5
Therefore the solution to the equation is given as 5.5
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Answer:
As per the statement:
If there were 300 accidents in 1967 and 380 in 1968.
Number of accident in 1967= 300
Number of accident in 1968= 380
then;
Increase in accident = 380-300 = 80
Using formula to find the percent increase:
Substitute the given values we have;
Simplify:
Therefore, is the percent increase
Answer:
Step-by-step explanation:
When we talk about percentages, we refer to that amount, which, proportionally, refers to a part of the total. In this sense, the total amount of muffins would equal 100%. And we need to find what is the percentage of the amount of blueberry muffins, so:
Let:
Using cross-multiplication we can find the what percent of the muffins are blueberry:
Solving for
B) x^2 - 3x + 19
C) x^2 - 6x + 12
D) x^2 - 9x + 19
Its D.
(2x^2 - 3x + 7) - (x^2 + 6x - 12)
Distribute the negative over the second parentheses:-
= (2x^2 - 3x + 7) - x^2 - 6x + 12
= x^2 - 9x + 19 (answer)
Answer: Jordan worked for 10 hours and Sydney worked for 6 hours.
Step-by-step explanation:
Let x represent the number of hours
that Jordan worked.
Let x represent the number of hours that Sydney worked.
Jordan can iron 20 shirts per hour, and Sydney can iron 25 shirts per hour. They ironed 350 shirts between them. It means that
20x + 25y = 350- - - - - - - - - - - 1
Jordan worked 4 more hours than Sydney. It means that
x = y + 4
Substituting x = y + 4 into equation 1, it becomes
20(y + 4) + 25y = 350
20y + 80 + 25y = 350
20y + 25y = 350 - 80
45y = 270
y = 270/45
y = 6
x = y + 4 = 6 + 4
x = 10