1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Yuki888 [10]
1 year ago
6

Choose the option with the proper number of sig figs

Mathematics
1 answer:
marishachu [46]1 year ago
6 0
\text{ 2 }\times10^8

Explanation:\begin{gathered} \text{Given:} \\ \frac{9\text{ }\times10^9}{4.5\text{ }\times10^1} \end{gathered}

let's break down the expression to get the final result:

\begin{gathered} \frac{9\text{ }\times10^9}{4.5\text{ }\times10^1}\text{ = }\frac{9}{4.5}\times\text{ }\frac{10^9}{10^1} \\ \frac{9}{4.5}\text{ = }\frac{9\text{ }\times\text{ 10}}{4.5\text{ }\times\text{ 10}}\text{ = }\frac{90}{45} \\ \frac{9}{4.5}\text{ = }2 \\  \\ \frac{10^9}{10^1}\colon\text{ when we divide exponents with same base, } \\ we\text{ take one of the base and combine the exponents by subtracting them:} \\ \frac{10^9}{10^1}=10^{9-1} \\ \frac{10^9}{10^1}=10^8 \end{gathered}\begin{gathered} \frac{9}{4.5}\times\text{ }\frac{10^9}{10^1}\text{ = 2 }\times10^8 \\  \\ \text{when dividing decimals, }the\text{ least number of }significant\text{ }figures\text{ in the problem}, \\ \text{ }\det ermines\text{ the significant figures in the answer} \\ 9\text{ = 1 significant, 4.5 = 2 significant} \\ \text{The least significant is 1} \\  \\ \frac{9\text{ }\times10^9}{4.5\text{ }\times10^1}\text{ = 2 }\times10^8 \end{gathered}

You might be interested in
A candy store has 6 boxes of chocolates. Each box has 500 pieces How many pieces are there altogether in the 6 boxes?​
arsen [322]
Answer is 3,000 hope it helps
6 0
2 years ago
Question Help
Lady bird [3.3K]

Answer:

19 1-point shots and 32 2-point shots

Step-by-step explanation:

Let x be the amount of 1-point shots they made and y be the amount of 2-point shots they made then...

x+y=51

x+2y=83

We can solve this equation using elimination. In this case, we can eliminate x be subtracting the two equations.

-y=-32

Divide both sides by -1

y=32

Plug this back into the equation to solve for x

x+32=51

Subtract 32 from both sides

x=19

They scored 19 1-point shots and 32 2-point shots.

8 0
2 years ago
The dashed line is given by the equation y=-9/5x-4
Svetlanka [38]

If you're looking for the dashed line, here it is.


8 0
3 years ago
I need help on doing this problem
Mamont248 [21]

<em>Hey</em><em> </em><em>mate</em><em> </em><em>!</em><em>!</em><em> </em>

Step-by-step explanation:

[ Refer to the attachment ]

8 0
3 years ago
Calculate the equation of a straight line which x-intercept is = - 2 and y-intercept = 2
VikaD [51]

Answer:

y=-2x+2

Step-by-step explanation:

it has a positive slope

the line should point like this on the graph: picture above

7 0
2 years ago
Other questions:
  • Help!!! Equilateral, isosceles, or scalene
    13·2 answers
  • How do you find the number of possible choices for a 2 digit password that is greater than 19?
    6·1 answer
  • A couple book a cruise to Alaska that promises to refund 100 per day of rain on the seven day cruise up to a maximum of 300. The
    14·1 answer
  • (X-2)2/4+(y+5)2/9=1 what is the length of major axis of this equation?
    14·1 answer
  • 6. The sequence is recursive. Find the value of the next term in the sequence.
    6·1 answer
  • A committee must be formed with 5 teachers and 4 students. If there are 6 teachers to choose from, and 15 students, how many dif
    6·1 answer
  • WILL GIVE BRAINLIEST <br><br> Just need the answer
    9·1 answer
  • The number of students who ordered a medium T-shirt was two less than
    12·2 answers
  • If i'm in 9th grade right now what years was my 6th grade year ?
    7·1 answer
  • Do 4x and 15 + x have the same value when x is 5? How do you know?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!