.1D + .5N + .25Q = 2.50
D = 2Q
N = 4Q
4Q = 2D = N
2000(.1D + .05N + .25Q = 2.5)
200D + 100N + 500Q = 5000
100Q + 25Q + 500Q = 5000
625Q = 5000
Q = 8
There are 8 quarters
Answer:
<h2>
a(n) = -2*(3)^(n-1)</h2>
Step-by-step explanation:
The sequence -2, -6, -18, -54, ... is a geometric one, since each new term is 3 times the previous term. In other words, 3 is the common ratio.
The general formula for a geometric sequence is
a(n) = a(1)*(r)^(n - 1), where r is the common ratio and a(1) is the first term.
Here,
a(n) = -2*(3)^(n-1)
Answer:
2
Step-by-step explanation:
It's divisible by itself.
The measures of 2 vertical angles are always equal, so we have:
7x+182=9x+192.
Rearranging, we have 182-192=9x-7x, which simplifies to -12=2x.
Thus, x=-6.
This means that the angles are:
i) 7x+182=7(-6)+182=182-42= 140(degrees).
ii) <span>9x+194=9(-6)+194=194-54=140 (degrees, as expected.)
Answer: x=-6</span>
B, 2 times a number means multiplication, 4 less is subtraction and is means equals