There are x boys.
There are 100 more girls than boys: x+100.
There are 976 children in total.
There are 438 boys.
Answer:
1094
Step-by-step explanation:
The sum of terms of a geometric series is given by ...
Sn = a1·(r^n -1)/(r -1)
You want the sum for ...
a1 = 2, r = -3, n = 7
Filling in the numbers, we get ...
S7 = 2·((-3)^7 -1)/(-3-1) = 2(-2188)/(-4)
S7 = 1094
Answer:
24
Step-by-step explanation:
18=75%
so
6=25%
18+6=24
(1) y=x-2
(2) y=x²-2
Then we deduce that x-2 = x²-2 ===> x²-x = 0 ==x(x-1) =0
so x = 0 or x =1. Plug these values in any of the equation to find y & you will find:
for x = 0, y = -2 & for x= -1 , y= -1
Answer:
5.19%
Step-by-step explanation:
The amount of an account (A) earning simple interest rate r for time t on principal P is ...
A = P(1 +rt)
Filling in the given values and solving for r gives ...
6000 = 5500(1 +r(21/12))
12/11 = 1 + r(7/4) . . . . . . . . . . divide by 5500, simplify fractions
1/11 = r(7/4) . . . . . . . . subtract 1
4/77 = r . . . . . . . . . . . multiply by 4/7
r ≈ 0.051948 ≈ 5.19%
You will be earning about 5.19% annual simple interest.