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
8_murik_8 [283]
3 years ago
5

How do you add and subtract decimals as easily as you do whole numbers?

Mathematics
1 answer:
Gwar [14]3 years ago
8 0
You can also multiply the decimals by a multiple of 10 to turn them I to whole numbers. Just make sure you multiply them both by the same multiple of 10 and divide them back before you write your answer!
You might be interested in
Solve the following system of equations by substation.
Cerrena [4.2K]

Answer:

C. (-1, 3)

Step-by-step explanation:

Label the 2 equations:

5y= 7x +22 -----(1)

x= -6y +17 -----(2)

Substitute (2) into (1):

5y= 7(-6y +17) +22

5y= -42y +119 +22 <em>(</em><em>Expand</em><em> </em><em>bracket</em><em>)</em>

5y= -42y +141 <em>(</em><em>Simplify</em><em>)</em>

42y +5y= 141 <em>(</em><em>+</em><em>42y</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

47y= 141

y= 141 ÷47 <em>(</em><em>÷</em><em>4</em><em>7</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

y= 3

Substitute y= 3 into (2):

x= -6(3) +17

x= -18 +17

x= -1

Thus, the solution is (-1, 3).

7 0
3 years ago
You want to solve 11% of what number is 22. Explain how you can solve that by using a proportion
Doss [256]
Write the first ratio as 11/100 and set it equal to 22/n.

since 11 x 2=22 you can multiply 100 x 2 and you'll get 200. 

*Check*: 11% of 200=22
3 0
3 years ago
What is the measure of Y? 4·9=36=36/4
alexira [117]

Answer:

Figure or Diagram Mandatory

GOOD LUCK FOR THE FUTURE! :)

3 0
3 years ago
Write the equation in standard form for the circle with center (0, – 10) and radius 6.
Artemon [7]

Answer:

Equation of circle in standard form with centre (0, – 10) and radius 6. \mathbf{x^2+(y+10)^2=36}

Step-by-step explanation:

We need to write equation of circle in standard form with centre (0, – 10) and radius 6.

The equation of circle is: (x-h)^2+(y-k)^2=r^2

where (h,k) is centre of circle and r is radius

We are given centre (0,-10) so, h=0, k=-10 and radius r = 6

Putting values and finding equation:

(x-h)^2+(y-k)^2=r^2\\(x-0)^2+(y-(-10))^2=(6)^2\\x^2+(y+10)^2=36

So, equation of circle in standard form with centre (0, – 10) and radius 6. \mathbf{x^2+(y+10)^2=36}

5 0
3 years ago
Which two properties of equality could Zoe use to finish solving for x
7nadin3 [17]
3x-4= - 10
add both side 4 so its a addition property 
3x=- 6
now divide both side 3 so it is a  <span>division property.
so x=-2</span>
4 0
3 years ago
Other questions:
  • Find the zeros of y=x2-4x-9 by completing the square
    10·1 answer
  • Im having trouble with this question <br>4n – 2n=4 ​
    15·2 answers
  • BRAINLIESTTTT!!! ASAP!!!
    10·1 answer
  • What is the simplified form of −x2 (2x3 + 5x2 + 6x)?
    7·1 answer
  • Tracy deposited $59 into a bank account that earned 3.5% simple interest each year.
    9·2 answers
  • Healthy Grains is planning a new design for its best-selling oatmeal. It has four containers to choose from. It costs the compan
    8·2 answers
  • Raul calculated that he would spend $125 on school supplies this year. He actually spent $87.50 on school supplies. What is Raul
    7·2 answers
  • -2 (3 + 5y -10) = 34
    13·2 answers
  • A water park charges a rental fee plus $1.50 per hour to rent inflatable rafts. The total cost to rent a raft for 6 hours is $15
    14·1 answer
  • Which equation is true for x=5?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!