Let in t hours, they are at 270 miles apart .
After t hours, Dave traveled
And Mary traveled ,
So the equation is
That is at 1 pm, they are 270 miles apart. And the correct option is A .
A sequence is recursively defined as a(n)=2a(n-2) for values of n>2. Find the seventh term of the sequence if a(1)=0 and a(2)
=1
1 answer:
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The complete question is as below and diagram is also attached:
Elena’s backyard is in the shape of a rectangle. She created a triangular-shaped flower bed (shown as the shaded region) to plant flowers in. The area of the triangular flower bed is 125 square feet. The area of her backyard that does not include the flower bed is 575 square feet
Answer:
The correct answer is 575 sq. m²
Step-by-step explanation:
The area of triangle = =
= 125
The area of square = A = LW
= 35 × 20 = 700
Thus, the answer will be
= 700 - 125
= 525.
Answer: 10
Step-by-step explanation:
Let x be the number of correct problems and y be the number of incorrect problems.
Given: A teacher pays a student 10¢ for every problem in this chapter that the student solves correctly, and fines the student 5 ¢ for every problem done incorrectly.
At the end of 30 problems they do not owe each other any money.
The by considering the given information we have the following equations :-
From (2), we have
Put in (1)
Then,
Hence, the number of correct problems is 10 and the number of incorrect problems is 20.