Answer:
1. Western erodes 2 ft/yr; Dunes builds up at 5 ft/yr
2. Sometime in 2006
3. Solve simultaneous equations
Step-by-step explanation:
1. Erosion patterns
(a) Western Beach
In 15 yr, Western Beach erodes from 100 ft to 70 ft.
The rate of erosion is 30 ft/15 yr = 2 ft/yr.
(b) Dunes Beach
In 15 yr, Dunes Beach builds up from 20 ft to 95 ft.
The rate of buildup is 75 ft/15 yr = 5 ft/yr.
2. Beaches with equal width
From the table, it appears that the beaches will have the same width sometime in year 11 (2006).
3. Best approximation
The graph below also shows that it happens part way through year 11 (2006).
We could get an even better solution by calculating the equations of the two lines and solving the simultaneous equations.
Answer:
The average age of the students at the school is 16.4 years.
Step-by-step explanation:
To find the average age of the students at the school, we multiply each age by it's percentage.
We have that:
7% of the students are 14
22% of the students are 15
24% of the students are 16
23% of the students are 17
19% of the students are 18
The rest is 19
The rest is?
100-(7+22+24+23+19) = 100 - 95 = 5
So 5% of the students are 19
Find the average age of the students at Thomas Jefferson High School.
The average age of the students at the school is 16.4 years.
Answer:
Can you show a picture of the function on the graph and the other equations?
Step-by-step explanation:
the image is y=2x-5 graphed
Answer:
2/9
Step-by-step explanation:
It would be 6/27, but you simplify by dividing each number by three.