I think x=10 because alternate interior angles so I made the equation: x+54=6x+4
(X * y) + 9
Xy + 9
you can't reduce it further
~Zoe
Answer:
11) 195312
13) 5461
Step-by-step explanation:
11)
15÷(-3) = -5
(-75)÷15 = -5
375÷(-75) = -5
It’s clear that the common ratio of this geometric sequence is -5
Then using the sum formula for geometric sequences :
……………………………………………………
13)
Answer:
Acá tenemos numeros de 5 cifras.
los podemos componer como:
D-m-c-d-u (en orden)
D = decenas de millar
m = millar
c = centenas
d = decenas
u = unidades.
56238 es 5 decenas de millar, 6 millares, 2 centenas, 3 decenas y 8 unidades.
54100 es 5 decenas de millar, 4 millares, 1 centenas, 0 decenas y 0 unidades.
10000 es 1 decenas de millar, 0 millares, 0 centenas, 0 decenas y 0 unidades.
20000 es 2 decenas de millar, 0 millares, 0 centenas, 0 decenas y 0 unidades.
an=a1+d(n-1)
a1=first term
d=common difference
n=which term
a1=7
a2=3
a2=3=7+d(2-1)
3=7+d(1)
3=7+d
-4=d
an=7-4(n-1)
expanded
an=7-4n+4
an=11-4n
domain is the numbers you can use for n (1,2,3,4,...)
the range is the output or the numbers you get in the sequence (7,3,-1,-5,...)
for the domain, we have to use numbers like 1,2,3,4,5
no 0
so we use natural numbers, that is the domain