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
Alika [10]
3 years ago
10

Please help 100 points

Mathematics
2 answers:
Leno4ka [110]3 years ago
8 0
B is it is 20 times

denpristay [2]3 years ago
8 0
^Oh/umanhear=25x10^-6 meters =25um
Let x = 1x10^-5 y=2x10-4 x/y=10^-5/2.10^-4=0.5x10^-1. X=0.05y
10000nm
3x10^-7 meter
You might be interested in
How many bucketloads would it take to bucket out the world’s oceans? Write your answer in scientific notation.
kodGreya [7K]

Answer: 7\times10^{19} buckets

Step-by-step explanation:

Given:  A cubic kilometer=10^{15}cubic centimeters

The volume of  world’s oceans=1.4\times10^{9} cubic kilometers of water.

⇒ The volume of  world’s oceans=1.4\times10^{9}\times10^{15} cubic centimeters of water.

Volume of a bucket = 20,000 cubic centimeters of water.

The number of bucket-loads would it take to bucket out the world’s oceans

n=\frac{\text{volume of ocean}}{\text{volume of bucket}}=\frac{1.4\times10^{9}\times10^{15}}{20000}

\Rightarrow\ n=\frac{1.4\times10^{9+15}}{0.2\times10^5}......[a^n\times a^m=a^{m+n}]\\\Rightarrow\ n=7\times10^{24-5}.....[\frac{a^m}{a^n}=a^{m-n}]\\\Rightyarrow\ n=7\times10^{19}

hence,  7\times10^{19} bucketloads would it take to bucket out the world’s oceans.

5 0
3 years ago
How does a number line help you compare numbers.
Hitman42 [59]

It shows you the exact distance from each number and it's easier to find out how far apart they are.

8 0
3 years ago
Read 2 more answers
What is the value of the expression f(-3) + 2f(-1) - f (4)<br><br> PLEASE HELP NO LINKS
Bas_tet [7]

Answer:

22

Step-by-step explanation:

Find f(-3) :

f(x) = x² + 2x for x ≤ -3

That means for those values of x, less than or equal to -3, this is the function.

So, f(-3) = (-3)² + 2(-3) = 9 - 6 = 3

Now, f(-1) :

From the given data, we see it is: f(x) = 2 (\frac{1}{3} )^{2x}

We take this because -1 lies between -3 and 4.

Now, f(-1) = 2 (\frac{1}{3} )^{2(-1)}

 => f = (-1) = 2(3)^{2} = 2 (9) = 18

For f(4) :

Clearly, the function is: f (x) = \frac{2x - 5}{x-7}

f (4) = \frac{2(4)-5}{4-7} = \frac{3}{-3} = -1

Therefore, <u>f(-3) + f(-1) - f(4) = 3 + 18 - (-1) = 3 + 18 + 1 = 22.</u>

5 0
3 years ago
Cindy is buying a new car and wants to learn how the value of her car will change over time. Insurance actuaries predict the fut
lawyer [7]

Answer:

C=10000(0.852)^t

Step-by-step explanation:

Let the exponential function be,

C=a(b)^t

Here, C = cost of the car

t = Duration or period in years

From the given table,

Two points representing cost of the car and time are (10000, 0) and (8520, 1),

For (10000, 0),

10000=a(b)^0

a = 10000

For (8520, 1)

8520 = 10000(b)^1

b=\frac{8520}{10000}

b = 0.8520

Therefore, exponential equation will be,

C=10000(0.852)^t

8 0
3 years ago
Two numbers that multiply to -100 and add to 15
Whitepunk [10]

Answer:

-5 and 20

Step-by-step explanation:

-5 + 20 = 15

-5 * 20 = -100

3 0
3 years ago
Other questions:
  • What is the distance between eight and 14
    11·2 answers
  • Enrique can travel 15 miles per hour on his bicycle. at this rate, how far can he travel in 2 2/5 hours?
    8·1 answer
  • Find 2 a for a = 3 1/4<br> 1) 6 1/2<br> 2) 6 1/4<br> 3) 23 1/4<br> 4) 5 1/2
    7·1 answer
  • I need help with this ​
    14·1 answer
  • Find the solutions of (x² − 9)(x² − 16) =0.
    8·1 answer
  • 1846<br><br> What is the smallest and largest?
    12·1 answer
  • I kinda forgot how to do this right.
    11·1 answer
  • If there are 10 apples in the fridge and 7 on the table, what is the ratio of apples in the fridge to all the apples?
    6·1 answer
  • Peter says, "If you subtract 16 from my number and multiply the difference by - 2, the result is
    11·2 answers
  • When solving this equation for x, what would you do next?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!