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
Stolb23 [73]
3 years ago
13

HELP PLEASE!!!

Mathematics
2 answers:
alexira [117]3 years ago
5 0

Answer:

100

Step-by-step explanation:

Step 1:

Multiple 14.1 by 9 = 126.9

Step 2:

Round to the significant figure

Step 3:

Answer is 100

Ymorist [56]3 years ago
4 0

Answer:

100

Step-by-step explanation:

We are given that an expression

14.1\cdot 9

We have to simplify  the expression by using the rules of significant figures

In 14.1 , three significant figures

In 9, only one significant figure

We know that in multiply

Least number of significant figures in any number of the expression determine the significant figures in the answer.

14.1\cdot 9=126.9

Therefore, by using this rule

The answer is 100.

You might be interested in
How many groups of seven can be chosen that contain four women and three men?
blsea [12.9K]
It depends on how many groups there are. If there were five groups of four women and three men then five groups could be made.
7 0
4 years ago
Lebo buys blank writable CDs in bulk. He repackages them and sells them
Kay [80]

Answer:

  1. He must sell each CD for R1,10 to make 40% profit

Step-by-step explanation:

R40×5%=2

R40-2=R38

40%×38=R15,2

15,2+40=55,2

55,2÷50=R1,10

i didnt do the radio sum...

5 0
3 years ago
7x + 2y=24<br> 8x + 2y=30
Bumek [7]

Answer:

x=6 y=-9

Step-by-step explanation:

  • Layer the equations on each other as you would in a subtraction problem:

               8x + 2y=30

               7x + 2y=24  

  • Subtract the equation just like you would normally. This should leave 1x=6 or x=6.
  • Now that you have your x value, plug it in as x for one of the equations. For the 2nd equation, this leaves:

               42+2y=24 then

               2y=-18 then

               y=-9

  • Double check your y value by plugging x=6 into the first equation. This should also leave y=-9.

3 0
3 years ago
Formar dos números pares de tres dígitos con el 2,4,8
Nitella [24]
248 , 842....aquí están los números....
8 0
3 years ago
Find dy/dx and d2y/dx2. x = cos(2t), y = cos(t), 0 &lt; t &lt; π
pogonyaev
\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\frac{\mathrm dy}{\mathrm dt}}{\frac{\mathrm dx}{\mathrm dt}}

y=\cos t\implies\dfrac{\mathrm dy}{\mathrm dt}=-\sin t
x=\cos2t\implies\dfrac{\mathrm dx}{\mathrm dt}=-2\sin2t=-4\sin t\cos t
\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{-\sin t}{-4\sin t\cos t}=\dfrac14\sec t

Let z=\dfrac{\mathrm dy}{\mathrm dx}. Then

\dfrac{\mathrm d^2y}{\mathrm dx^2}=\dfrac{\mathrm dz}{\mathrm dx}=\dfrac{\mathrm dz}{\mathrm dt}\dfrac{\mathrm dt}{\mathrm dx}=\dfrac{\frac{\mathrm dz}{\mathrm dt}}{\frac{\mathrm dx}{\mathrm dt}}
\implies\dfrac{\mathrm d^2y}{\mathrm dx^2}=\dfrac{\frac{\mathrm d}{\mathrm dt}\left[\frac14\sec t\right]}{-4\sin t\cos t}=\dfrac{\frac14\sec t\tan t}{-4\sin t\cos t}=-\dfrac1{16}\sec^3t
4 0
4 years ago
Other questions:
  • What is 3over 4 plus 5 over 10
    10·1 answer
  • How do you multiply a decimal buy whole number
    7·2 answers
  • 19-6m=-37 Please explain how you got the answer as well I really need help
    8·2 answers
  • Which box plot represents a set of data that has the least mean absolute deviation?
    11·2 answers
  • What is the answer to with steps (Y+2) at y=-4
    13·2 answers
  • Solve ) -7h + 8 - 5W + 4 use h = 3 and w = 8
    15·1 answer
  • These are the means and standard deviations for samples of prices from two different brands of shoes. Brand A Brand B Mean: $50
    8·1 answer
  • Can someone give me the answer I will give you brilliant
    11·2 answers
  • Question 2 <br> I rlly need help thank youuu!!
    7·1 answer
  • Cari knows that a certain species of fish need 240 cubic feet of water in their tank.the tank has a height of 12 feet and a widt
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!