Answer:
40287600 = B. 4 x
Step-by-step explanation:
<u>We first have to do the multiplication of the numbers given:</u>
19 * 2,120,400
=> 40287600
<u>Now we have to figure out how many digits are after the number 4:</u>
4, 0 2 8 7 6 0 0
7 digits
Meaning that we need an exponent of 7 for it to be in scientific notation, giving us with the answer B. 4 x
Answer:
a. Of all the students, are girls with blond hair.
b. Of all the students, are boys without brown hair.
Step-by-step explanation:
a. You know that of the students are girls (This means that
of the studes are boys) and
of these girls have blond hair.
Then, of
is:
Therefore, of all the students, are girls with blond hair.
b. You know that of the boys have brown hair.
Then, of
is:
Of all the students, are boys without brown hair.
ANSWER
EXPLANATION
The given sequence is
3,-5,-13,.....-229.
The first term of this sequence is
a_1=3
There is a common difference of
The last term of this sequence is -229.
The nth term of this sequence is given by:
We use the last term to determine the number of terms in the sequence.
Divide through by -8;
Hence there are thirty terms in the sequence.
The sum of the first n terms is given by:
The sum of the first 30 terms is given by: