5=x+8 (Sorry but i've been on this one for hours)
2 answers:
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Answer:
Walkway is 3 feet wide.
Step-by-step explanation:
Given:
Length of the building is 150 ft
width of the building is 100 ft
walkway is x ft wide.
Total area(around and including the building) = 16536 square feet
Solution:
Length of the total area will be = length of the building + width of walkway from 2 sides =
Width of the total area will be = width of the building + width of walkway from 2 sides =
Now Total area(around and including the building) = Length of the total area Width of the total area
Now solving for both equation we get.
Now, We get 2 values for x which -128 and 3 but the width of the building can't be in negative value hence we will consider value of x be 3.
∴ Width of the walkway is 3 ft.
Answer:
Betsy will save $121 in 5 weeks.
Step-by-step explanation:
We can see that Betsy's savings are 3 times the saving of her last week. We can see that this is an geometric sequence as 1,3,9,..
To find the sum of our geometric sequence we will use , where n is number of terms we are taking sum of, a is first term of sequence and r is common ratio of the sequence.
Therefore, Betsy will save $121 in 5 weeks.
You can use the simple interest formula
We need P, which is the primary (or principal) investment, and we know that:
rate = 3% (0.03)
time = 7
i = $25000
So, just plug in and solve:
The company needs to invest $5250 today, to make $25000 in 7 years.
We need P, which is the primary (or principal) investment, and we know that:
rate = 3% (0.03)
time = 7
i = $25000
So, just plug in and solve:
The company needs to invest $5250 today, to make $25000 in 7 years.