1: Bellringer Heather would like to have an average of 90 in her science class.
There are four assignments with the following grades:
82, 95, 88, 86
What grade will Heather need to make on the last assignment to meet her goal?
O 98
O 99
O 87
O 88

99

Step-by-step explanation:

Grades obtained:

Target grade:

Required grade = x, then average is:

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.

the answer is 2/54

step-by-step explanation: