Answer:
€7200
Step-by-step explanation:
20%---------1440
100%----------y
y= 100×1440/20
y= 144000/20
y= €7200
price before decrease= €7200
Answer: We should add the constant 81 to the expression to have a perfect square trinomial.
The perfect square trinomial that would be formed would result from (x + 9)^2.
We can use foil to prove it.
(x + 9)(x + 9)
x^2 + 9x + 9x + 81
x^2 + 18x + 81
81 is the value that must go with 18x in the middle to form the perfect square trinomial.
Comparing the cost of the car to the deposit, $3,168.00 the amount required to be added to the deposit
$3,168 is the interest
rate = 8%
time = T
principal = 6,600.00
I = ( PRT)/100
T = 100 I/PR
=(100*3168)/(6600*8)
= 6
She should leave the money for six years.
Answer:
5.74 (rounded)
Step-by-step explanation:
4^2+b^2=7^2
16+b^2=49
-16 -16
b^2=33
√b=√33
b= about 5.74
Explanation:
64
,
32
,
16
\
,
8
,
4
is a geometric sequence.
this is a sequence where, to get from one term to the next, there is a number that you have to multiply it by. this is the same for all parts of the sequence.
64
2
=
32
32
2
=
16
etc.
to get from
64
to
32
, you divide by
2
.
this is the same as multiplying by
1
2
64
⋅
1
2
=
64
1
⋅
1
2
=
64
2
=
32
hence, the number that each term is multiplied by to find the next is
1
2
.
if we call one term
a
n
and the previous term
a
n
−
1
, where
n
shows position in the sequence and therefore that
a
n
is one ahead of
a
n
−
1
, then we find that
a
n
=
1
2
a
n
−
1
.
this is the notation for the term-to-term rule, using
n
for the current position,
n
−
1
for the position before, and
a
n
with
a
n
−
1
to show progress from one position to the next.
