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-Dominant- [34]
3 years ago
10

What is the explicit rule that can be used to find the number of homes sold in the nth month of the year? (@musiclover pleasee h

elp)

Mathematics
1 answer:
tresset_1 [31]3 years ago
4 0
8,12,16
Each following number is 4 more than previous, so it is arithmetic sequence.
a(1)=8,
d=4
a(n)=a(1)+d(n-1)
a(n)=8+4(n-1)=8+4n-4=4+4n
a(n)=4n +4
Correct answer is A.
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Plz help me with this
lutik1710 [3]
This is the answer:)

5 0
3 years ago
In a certain country the life expectancy for women in 1990 was 45 and in 2000 it was 85?years. Assuming that life expectancy bet
Darya [45]

Answer:

49145 years

Step-by-step explanation:

In a certain country the life expectancy for women in 1990 was 45 and in 2000 it was 85?years.

Assuming that life expectancy between 2000 and 2100 increases by the same percentage as it did between 1900 and 2000,what will life expectancy be for women in 2100?

In 10 years, the expectancy increased by 85/45 = 17/9

between 2000 and 2100, it will increas by 10 time 10 years, so expected expectancy is  85*(\frac{85}{45})^{10} = 49145  years

4 0
3 years ago
If F(x)=x^3-2x^2, which expression is equivalent to f(I) -2+i,-2-i,2+i,2-i
Romashka-Z-Leto [24]

Hello from MrBillDoesMath!

Answer:

2 - i

Discussion:

Evaluate F(x) = x^3 - 2 x^2 when x = i.

i^2 = -1 for i^3 = i ( i^2) = i (-1) = -i

So F(i) =  (i)^3 - 2 (i)^2                      

          =   -i     - 2(-1)

          = -i      +  2

          =  2      -  i


which is the last answer shown


Thank you,

MrB

6 0
3 years ago
The sum of one fifth of a number and three is equal to half of the number. What is the number?
Veseljchak [2.6K]

see picture for steps

 x= 10

7 0
3 years ago
The product of three and a number decreased by ten is thirteen
monitta

Answer:

3x - 10 = 13 would be the verbal expression where x = a number

Hope this helps!

5 0
2 years ago
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