Answer:
b is 9 and h is 18
Step-by-step explanation:
because its times 1.5 for each one so like 5 times 1.5 is 7.5 so we can see that it is times by 1.5
Answer:
Step-by-step explanation:
The equation for an arithmetic sequence is
where n is the position of the number in the sequence, a1 is the first number in the sequence, and d is the difference between the numbers in the sequence.
Our first number is 2, so a1 = 2; to get from 2 to 5 we add 3, to get from 5 to 8 we add 3. That means that d = 3. Filling in the standard form of the equation:
which simplifies to
and a bit more to
(which should tell you that arithmetic sequences are lines!)
Finding the 13th number simply requires that we replace n with 13 and solve:
so
Answer:
The 3rd equation on the left column and second one on the right column.
Step-by-step explanation:
These 2 equations have same coefficients of x and y if we divide the first one by 4 and the second by 2.
This gives the 2 equations
x^2 + y^2 - 4x + 6y - 7 = 0
x^2 + y^2 - 4x + 6y - 20 = 0
If we compete the square on these we get
(x - 2)^2 + (y + 3)^2 = 20
(x - 2(^2 + (y + 3)^2 = 33
These are in standard form . The center is the same (2, -3) but the radii are different so they are concentric.
Peter will have $910 - $40 * x on his account, where x is the number of the weeks. Marla will have $470 - $20 * x.
910 - 40 x = 470 - 20 x
910 - 470 = 40 x - 20 x
440 = 20 x
x = 440 : 20
x = 22
910 - 40 * 22 = 910 - 880 = $30
470 - 20 * 22 = 470 - 440 = $30
Answer: Their accounts will be equal in 22 weeks ( both of them will have $30 ).
Oh okie oh gosh lol lol I don’t know