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3 years ago

The estimated population of the world in the middle of 2010 was 6,852,472,823. Express this value in scientific notation.

Mathematics

1 answer:

Marina CMI [18]3 years ago

7 0

First we round it off to the nearest millions.

6,852,472,823 rounded off - 6,852,000,000

then you move the decimal point to the left until the number becomes between 1 and 10

-- 6.852000000

count the numbers to the right of the decimal point, remove the zeroes, then write it as

6.852 x 10^9 or 6.852e9

9 is how many numbers are in the right of the decimal point, which was 852000000

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Jack is trying to make extra money on his summer vacation from school. He works two different jobs, earning $9 per hour washing

Sveta_85 [38]

Answer:

$57

$9w+6d$

Step-by-step explanation:

Given that:

Earnings per hour for washing cars = $9

Earnings per hour for walking dogs = $6

Number of hours for which car washing is done = $w$

Number of hours taken for walking dogs = $d$

Earnings for $w$ hours for washing cars = Per hour earnings multiplied by number of hours = $9 $w$

Earnings for $d$ hours for walking dogs = Per hour earnings multiplied by number of hours = $6 $d$

Total earnings by both = $( $9w+6d$ )

Now, given that

Number of hours spent washing cars = 5 hours

Number of hours spent walking dogs = 2 hours

Therefore, total earnings by both = 9 $\times$ 5 + 6 $\times$ 2 = <em>$57</em>

5 0

3 years ago

???????????????? Help it's probably super easy btw

Deffense [45]

Points:

Quadrant I: (+, +)
Quadrant II: (-, +)
Quadrant III: (-, -)
Quadrant IV: (+, -)

Thus the point (5,4) is found in Quadrant I.

6 0

4 years ago

Read 2 more answers

The answer for your question is a 1;3 because 16/48=1/3 or 1:3.

tiny-mole [99]

1:3 = 16/48 and 1/3.

Have a nice day! :D

4 0

3 years ago

For a company picnic, Kira ordered a box of fresh-baked gingerbread cookies and sugar cookies. The box included a total of 40 co

dimaraw [331]

Answer:

She ate 18 cookies

Step-by-step explanation:

If you multiply your percent which is 45% by 40 you will get your answer

0.45x40=18

5 0

3 years ago

For 1983 through 1989, the per capita consumption of chicken in the u.S. Increased at a rate that was approximately linear. In 1

Volgvan

We have been given that in 1983, the per capita consumption was 39.7 pounds, and in 1989 it was 47 pounds.

Let us assume t=0 corresponds to year 1980.

Hence, we can express the given information as ordered pairs as (3,39.7) and (9,47).

We can to find a linear function passing through these points. Let us first find slope of the linear function:

$m=\frac{y_{2}-y_{1} }{t_{2}-t_{1}} =\frac{47-39.7}{9-3} =\frac{7.3}{6} =\frac{73}{60}$

We can write the required linear function as:

$y-39.7=\frac{73}{60}(t-3)$

Upon simplifying this, we get:

$y=\frac{73}{60}t+\frac{721}{20}$

In order to find per capita consumption in 1995, we need to substitute t=15 in this function.

$y=\frac{73}{60}(15)+\frac{721}{20}=54.3$

Therefore, we would expect the per capita consumption of chicken in 1995 to be 54.3.

3 0

4 years ago