Answer:
The third one(-20+(n-1)*)
Step-by-step explanation:
It's correct because when you plug in one of the numbers in the list, it makes the equation equal. Example Below.
n=4
n=-20+(n-1)8
4=-20+(4-1)8
4=-20+3*8
4=-20+24
4=4
Answer:
16.23
Step-by-step explanation:
Use cosine to solve.
cos = adjacent / hypotenuse
cos 52 = 10 / x
(x = AB)
(cos 52)(x) = 10
x = 10 / (cos52)
x = 10 / 0.616
x = 16.2338
AB = 16.23
Answer:
y=1; x=2
Step-by-step explanation:
Substitution:
x=2y
2x+5y=9
=> if x=2y, plug in the x value into other equation, so
----------------------------------------------------------------------------
2(2y)+5y=9
4y+5y=9
9y=9
y=1
You have the Y value, so now solve for X
-----------------------------------------------------------------------
plug in y value to x=2y
so x=2(1)
x=2
Answer:
$61,500
Step-by-step explanation:
$61,500
x
4.8% (.048)
=
$2952 yearly
x
30 years
=
$88,560
+
Initial Deposit of $61,500
=
$150,060
X-1.5=21
+1.5 +1.5
x=22.5
22.5-1.5=21 Subtraction sentence
