Step-by-step explanation:
Sally mass = 70 kilograms
Dave mass = 170 pounds ≈ 77 kilograms
Sally's mass as a percentage of Dave's mass = (70/77)x100
Sally's mass as a percentage of Dave's mass ≈ 91 %
Answer:
Hence, 12,90,000 can be expressed as
.
Step-by-step explanation:
- Given 12,90,000
- Use given, move the decimal point so that first factor is greater than or equal to 1 but less than 10 .
- Then count n and write in scientific notation.
Step 1 of 1
Consider 12,90,000
1.29
So, 1.29 lies between 1 & 10.
Now, Decimal moved to 6 places at left.

So,
.
Series would be: 1,3,5......99
Here, a=1, d = 3-1 = 2, l = 99
l = a+(n-1)d
99 = 1+(n-1)2
98 = 2n-2
2n = 100
n = 50
Sum would be Sn = n/2 (a+l)
50/2 (1+99)
25(100) = 2500
So, your answer is 2500
The answer is j+5-2
because sum means to add