Write the formula for the sum of 7 consecutive numbers if the first number is m. \

Step-by-step explanation:

If you have an odd number of consecutive numbers, the middle number should be x. So 7 of them would be written as

(x - 3)+(x - 2) + (x - 1) + x + (x + 1) + (x + 2) + (x+3)

That way all you are left with is 7x because the integers cancel.

That is not your question

You question is

Sum = m+(m + 1)  + (m + 2) + (m + 3) + (m + 4) + (m + 5) + (m + 6)

Hello!

We can say what the formula is:

We need a formula to add 7 consecutive numbers, m being the first one.

So, we have:

Now, let's simplify, joining the m and the numbers:

So, the formula is:

Let's say that m is 2. So, we substitute in the first non-simplified formula:

Now, we put it in the simplified formula, and it should give the same result:

It was confirmed. We conclude, once again, that the formula is:

_________

Learn more:

link

_________

Hope this helps. Good studies! ☺

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.