Answer:
It cost $0.91 10 years ago.
It takes 10.24 years for the cost of bread to double.
Step-by-step explanation:
The equation for the price of bread after t years has the following format:
In which P(0) is the current price, and r is the inflation rate, as a decimal.
If we want to find the price for example, 10 years ago, we find P(-10).
Inflation is at a rate of 7% per year. Evan's favorite bread now costs $1.79.
This means that . So
What did it cost 10 years ago?
It cost $0.91 10 years ago.
How long before the cost of the bread doubles?
This is t for which P(t) = 2P(0) = 2*1.79. So
It takes 10.24 years for the cost of bread to double.
Answer:
In a paragraph proof, statements and their justifications are written in sentences in a logical order.
A two-column proof consists of a list statements and the reasons the statements are true.
A paragraph proof is a two-column proof in sentence form.
Step-by-step explanation:
- In a paragraph proof, statements and their justifications are written in sentences in a logical order.
- A two-column proof consists of a list statements and the reasons the statements are true.
- A paragraph proof is a two-column proof in sentence form.
A paragraph proof is only a two-column proof written in sentences. However, since it is easier to leave steps out when writing a paragraph proof.
A two-column geometric proof consists of a list of statements, and the reasons that we know those statements are true. The statements are listed in a column on the left, and the reasons for which the statements can be made are listed in the right column
12x+25 + 3x - 10 = 180
15x + 15 = 180
15x = 165
x = 11
8,7,9,3,4,9,2
This is correct because I’m in middle school
Answer:
6 pounds of fertilizer.
Step-by-step explanation:
We can solve this problem using rule of three:
Anna needs to use 4 pounds of fertilizer for each 120 square feet of soil. With that values, we make the first fraction: 4/120
Now, she needs X pounds of fertilizer for 180 square feet of soil. The fraction now is X/180
Then, we need to make the first fraction equal to the second, and then find the value of X:
4/120 = X/180
X = 4*180/120 = 6
So Anna will need 6 pounds of fertilizer.
Another way to solve this problem is calculating the amount of soil for one pound of fertilizer:
If 4 pounds of fertilizer is necessary for 120 square feet of soil, 1 pound is necessary for 120/4 = 30 square feet of soil.
If we have 180 square feet of soil, we divide 180 by 30 to find the amount of fertilizer necessary:
180/30 = 6 pounds of fertilizer.