Answer:
Step-by-step explanation:
A)
"In the last 2.5 years, the water level has decreased 0.75 feet."
In the very first statement it has been stated that over the last 2.5 years, the water level in a lake has changed by -0.3 feet per year. That means in the last 2.5 years , total decrease in level is as follows
2.5 x - 0.3 = - .75 ft .
So the statement is true.
B)
"The overall change of the water level after 7.5 years will be -2.75 feet."
This statement appears to be false based on information provided
No prediction regarding rate of decrease for a period beyond 5 year has been made so any statement with respect to a timeline of 7.5 years may turn out to be false.
C)
"The change in water level each year for the next 5 years will be -0.4 feet.
"
This statement prima-facie appears to be true because rate of decrease stated in the statement is 0.4 ft /year for next 5 years .
D )
"The overall change in water level for the next 5 years is equal to 5(0.4)"
this statement is true
as change in one year = .4
change in 5 years = 5 x .4
Answer:
60
Step-by-step explanation:
As we can see that common difference is increasing to one more digit after every term
so it means
a21 = 231
Answer:
$137.5
Step-by-step explanation:
hope i right and hope it helps
Divide the quarts of white paint by the quarts of red paint:
20 / 4 = 5
25 / 5 = 5
35 / 7 = 5
40 / 8 = 5
All the answers are 5.
Because the quarts of white paint is the higher number the ratio would be 1 quart of red to 5 quarts of white, which would be written as 1:5.
The answer is: It is 1:5
