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
ra1l [238]
2 years ago
5

Describe why you can change a subtraction problem into an addition problem

Mathematics
1 answer:
Elena-2011 [213]2 years ago
8 0
A subtraction problem can be turned in to an addition problem because of negative numbers. Take 5-2=3 for example. If you change 5-2 into an addition problem then you would but he addition sign and a negative sign on 2. This will then leave you with the problem looking like 5+ -2. If you add 5 and -2 you will still get three.
You might be interested in
Help me PLZ with the exact answer
olchik [2.2K]
Y = 4/-3 - 1

The slope can either be -4/3 or 4/-3 and the y-intercept is (0,1)
4 0
3 years ago
in a test consisting of 90 questions, Ama answered 75% of the first 40 questions correctly. If she had to get a score of 80% in
Shalnov [3]

Answer:

total question =90

she obtained 75% of first 40 questions

  1. No. of question she got correct in first 40 = 75% * 40 = 30

2. in order to get 80% out of 90,

the no. of questions got correct by Ama = 80% * 90 = 72

3. As she already got 30 c0rrect in first 40 questions, the number of question she needs correct for remaining 50 = (72-30) = 42

percentage = 42/50*100% = 84%

3 0
3 years ago
Please help i don't understand!
vaieri [72.5K]

Answer: 9. x=-3/2     10. x=2

                   x= 5/2           x=5/3

Step-by-step explanation:

9. Factor the equation:

How: put 4x^2 in the bottom left box and -15 in the upper right box.

then multiply 4x^2 x -15 = -60x^2 and put your answer in the top center box of the diamond.

Put the -4x from the equation in the bottom box. Then list out factors that multiply to the top box (-60x^2) and add to the bottom box (-4x) The two factors are -10 and 6

-10 x 6 = -60

-10 + 6 = -4

Put -12x and -5x in the remaining white boxes and find what numbers multiply to each.

I attached a picture. The colored dots correspond with each other.

Eg: Orange dot x orange dot = number in white square

Now you get the two factors (2x+3)(2x-5)

Set both of these equal to 0 and solve

0=2x+3     0=2x-5

x= -3/2       x= 5/2

Do the same for the other problem

7 0
1 year ago
Mila and Ava play a number game. Mila gives Ava a number and she does three computations:
Lady bird [3.3K]

Answer:

Step-by-step explanation:

(x-5)2+8 = 92

2x-10+8 = 92

2x = 94

x = 47

7 0
2 years ago
Read 2 more answers
black pencils cost 75 naira each and colour pencils cost 105 naira each if 24 mixed pencils cost 2010 naira how many of them wer
KonstantinChe [14]

Answer:

number of black pencils is 17

7 0
3 years ago
Other questions:
  • The mass of Venus is 4.87 × 1024 kilograms, and the mass of Jupiter is 1,898 × 1024 kilograms.
    6·1 answer
  • WILL MARK BRAINLIST ! Carissa also has a sink that is shaped like a half sphere. The sink has a volume of 20003π in3. One day th
    5·1 answer
  • 1 lakh more then 45,25,306​
    7·1 answer
  • A watering can contained 512 quarts water. After all the plants were watered, only 4 cups remained. How many cups of water were
    10·2 answers
  • The price of a used textbook after a 35% markdown is $28.60. What was the original price?
    11·1 answer
  • 0.48m divided by 8 equals
    7·2 answers
  • What's the answer to the pic<br>A. 3 2/3<br>B. 2 2/3<br>C. 3 1/3<br>D. -7 1/3 ​
    8·2 answers
  • What is the slope of the line represented by the equation y = = 4x+12<br> 2<br> N/P
    14·1 answer
  • Is this graph shown below a proportional or non proportional linear relationship
    12·1 answer
  • Volume of a circular cylinder 4 feet tall with a radius of 15Ft.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!