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
DaniilM [7]
2 years ago
15

How do you write 400 in scientific notation?

Mathematics
1 answer:
Mkey [24]2 years ago
3 0

Answer: 4x10^2

Step-by-step explanation:

You might be interested in
What is 2 times 3 times n times n = 54
kolezko [41]

If I'm reading this correctly, it is 2*3*n*n = 6n^2

6n^2 = 54  Divide by 6

n^2 = 54/6

n^2 =  9      Take the square root of both sides.

sqrt(n^2) = sqrt(9)

n = +/- 3

n = + 3 or n = -3. Both will solve the equation above.

Edit

2 * 3 * n * n

Let n = 3

2 * 3 * 3 * 3 = 6 * 9 = 54

The other value is n = - 2

2 * 3 * n * n

2 * 3 * (-3) * (-3)   A minus times a minus is a plus.

2 * 3 * 9 = 6 * 9 = 54

both + 3 and - 3 for n will give 54.

8 0
3 years ago
10) Solve the inequality for x.
Stella [2.4K]

Answer:

it is D

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Keenan is buying tires. Keenan has to spend 2 dollars for each tire purchased <br>​
shepuryov [24]

Answer:

what's the question? I don't know

8 0
3 years ago
Read 2 more answers
Latoya made 2 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for both necklaces
denis23 [38]

Answer:

its 2.60 for each pendent

7 0
2 years ago
Use a calculator to find the approximate value of the expression. Round the answer to two decimal places. The cosine of the comp
taurus [48]

Answer:

B) 0.85

Step-by-step explanation:

By definition, complementary angles add to 90 degrees.

The given angle 58 degrees is complementary to 90-58 = 32 degrees. The two angles 58 and 32 add to 90.

Therefore, cos(32) = 0.848 = 0.85

4 0
3 years ago
Read 2 more answers
Other questions:
  • Leonard earned $100 from a bonus plus $15 per day (d) at his job this week. wich of the following expressions best represents Le
    13·1 answer
  • Barbara drives between Miami, Florida, and West Palm Beach, Florida. She drives 50 mi in clear weather and then encounters a thu
    8·1 answer
  • Farrel accumulated $9,000 in credit card debt. If the interest rate is 4.1% per year and he does not make any payments for a yea
    5·1 answer
  • To graph the equation 2x + 5y = 10, Zeplyn draws a line through the points (5, 0) and (0, 2). What is the slope of the line repr
    6·2 answers
  • How u do the sum pls
    11·2 answers
  • Given the sequence 24, 12, 6, 3......., where x = 1, 2, 3, 4, .........What is the first term? 24 12 6 3
    9·1 answer
  • What is the simplified form of the expression 8x + 3 – 4x – 5?
    14·1 answer
  • Which expression is equivalent to -15x + 39?
    7·2 answers
  • Help me I want good grades i
    10·1 answer
  • NEED HELP FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!