Answer:
1. 15
2. 8
Step-by-step explanation:
The two sequence are geometric progression GP, because they follow a constant multiple (common ratio)
The nth term of a GP is;
Tn = ar^(n-1)
Where;
a = first term
r = common ratio
For the first sequence;
The common ratio r is
r = T3/T2 = 540/90 = 6
r = 6
T2 = ar^(2-1) = ar
T2 = 90 = ar
Substituting the values of r;
90 = a × 6
a = 90/6
a = 15
First term = 15
2. The sam method applies here.
Common ratio r = T3/T2 = 128/32 = 4
r = 4
T2 = ar^(2-1) = ar
T2 = 32 = ar
Substituting the values of r;
32 = a × 4
a = 32/4
a = 8
First term = 8
If you have to show your work...
8.2 x 9.5
8.2
x 9.5
-----------
410
+ 7380
-----------
7,790 miles
hoped this helped.
Answer: 1/2x6=3 not 1/2x5 which equals 2 1/2.
Answer:
300
Step-by-step explanation:
because you multiply 100 to the number of tens is equal 300
If the area is 30 inches, then the length must be 5 and the width must be 6, so 10+12=22 which is your perimeter. I got 10 with 5x2 and 12 with 6x2. Then you add it together because the formula for perimeter is (lengthx2) +(widthx2)! Just in case you need an explanation.
