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
RSB [31]
3 years ago
11

Explain the relationship between multiplying and diving by 10, 100, and 1,000 and moving the decimal point to the right or to th

e left.
Mathematics
1 answer:
zhannawk [14.2K]3 years ago
5 0
If you're multiplying by 10, you're moving the decimal point to the right, the same with any multiplication in the 10's, so 100, 1,000, etc. This is because you are making the number 10 times larger, so if you had 3.4, the 4 is in the 1/10 column so multiplying by 10 would put it in the units column, making the number 34.

On the other hand, dividing by the 10's makes the decimal point move to the left because you are making the number 10 times smaller, so if the units column is worth 1, then 10 times less than that is 1/10, which is the first decimal place.

I hope this helps! I tried to explain it well but let me know if you still don't understand or if I've confused you in any way :)
You might be interested in
Elsa finished a puzzle in seven minutes how many seconds is this
Nastasia [14]

Answer:

420

Step-by-step explanation:

6 0
3 years ago
The dimensions of a room are 4.2m by 6m. On a plan, the longer side is equal to 4 cm. What is the length of the shorter side on
Fiesta28 [93]

Answer: Length of shorter side is 2.8 cm.

Explanation:

Since we have given that

Dimensions of a room are given by

4.2\ m\times 6\ m

On a plan,  the longer side = 4 cm

As we know that the ratio of original room is equal to ratio of plan room

So,

\frac{4.2}{6}=\frac{x}{4}\\\\4.2\times 4=6x\\\\16.8=6x\\\\\frac{16.8}{6}=x\\\\2.8=x

So, length of shorter side is 2.8 cm.

7 0
3 years ago
Read 2 more answers
Please help me with this question
mars1129 [50]

Answer:

<h2>4/5</h2>

Step-by-step explanation:

Look at the picture.

sine=\dfrac{opposite}{hypotenuse}

We need a hypotenuse length.

Use Pythagorean theorem:

hypotenuse^2=leg^2+leg^2

We have

leg=9,\ leg=12,\ hypotenuse=x

Substitute:

x^2=9^2+12^2\\\\x^2=81+144\\\\x^2=225\to x=\sqrt{225}\\\\x=15

For the sine we have:

opposite=12, hypotenuse=15

Substitute:

\sin\alpha=\dfrac{12}{15}=\dfrac{12:3}{15:3}=\dfrac{4}{5}

3 0
3 years ago
A radio is on sale for $50. If this price represents a 10% discount from the original price, what is the original price to the n
arsen [322]
Ok, so the discount is given in a percentage, in this case 10%.  The sale price is going to reflect 10% of the original price minus the discount, so...

Sale $ = original$ - original $ x .10

If we use some algebra, we can reorganize the equation to solve for the original price...

Sale $ = original$ - original $ x .10
Sale $ = original$ (1 - .10)
Sale $ = original$ x .90
original$ = sale$/.90

So now we can plug in our values

original price = 50/.90
original price = 55.55555 = $55.55 to the nearest nickel
8 0
3 years ago
Read 2 more answers
If you were to roll two number cubes and record the sum 180 times, you should expect to roll a four 10 times.
Delvig [45]

Answer:

False

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • The price of an item has been reduced by 20%. The origanal price was $90. What is the price of the item now?
    15·2 answers
  • Window cleaner costs 4.00$ plus a 6% sales tax. How much will the item cost after tax?
    12·1 answer
  • How many groups of 8 are in 70
    8·2 answers
  • C=5p+215 for p the formula c=5p + 215 relates c, the total cost in dollars of hosting a birthday party at a skating rink,to p, t
    6·1 answer
  • What is 0.33333333333 as a fraction?
    13·2 answers
  • Sharon has a new beaded necklace. 72 out of the 80 beads on the necklace are blue. What
    11·2 answers
  • Julie is tracking the growth of a plant for a science project. The height of the plant on the 2nd day she measured was 8 inches
    13·1 answer
  • Please help, I need the answer:
    5·1 answer
  • A piece of ribbon that is 8 and 1/3 yards long will be cut into 5 equal pieces to make bows. How much ribbon will be used foe ea
    6·2 answers
  • What are the coordinates of point A?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!