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
Aneli [31]
3 years ago
7

The sum of a number and 4

Mathematics
2 answers:
KiRa [710]3 years ago
7 0

Answer:

x+4

Step-by-step explanation:

Sum is what you get when you add.

Since you dont know what your adding to 4, you use a variable (x).

allsm [11]3 years ago
4 0
X + 4 is the answer to your question
djdhhdjdhrhehdjjdhdhe
You might be interested in
3x+9y=12 <br>-3x-6y=18 <br>Solve the system by using elimination​
Ivenika [448]

Answer:  (x, y) = (-26, 10)

This means x = -26 and y = 10 pair up together

===============================================================

How to get that answer:

Add the equations straight down. Think of having 3 separate columns for the three different like terms.

  • 3x + (-3x) becomes 0x and that's just 0. So the x terms go away
  • 9y + (-6y) is the same as 9y-6y which turns into 3y
  • 12 + 18 becomes 30

After all that, we're left with the simpler equation 3y = 30. That solves to y = 10 after dividing both sides by 3.

Plug this back into any equation involving x and y. Solve for x

3x+9y = 12

3x+9(10) = 12

3x+90 = 12

3x = 12-90

3x = -78

x = -78/3

x = -26

We have found that x = -26 and y = 10 pair up together to form the solution.

-------------------

Checking the answer:

Plug (x,y) = (-26, 10) into the first equation

3x+9y = 12

3(-26)+9(10) = 12

-78+90 = 12

12 = 12

We get a true equation since the same thing is on both sides.

Repeat the same idea for the second equation

-3x-6y = 18

-3(-26) - 6(10) = 18

78 - 60 = 18

18 = 18

The second equation is true as well.

Both equations are true, so the solution (x, y) = (-26, 10) is confirmed.

8 0
3 years ago
Read 2 more answers
Help!! It’s due tomorrow morning!
Yuki888 [10]

Answer:

16. -7x-14

17. -20+5y

18. -8b+8

19. -16c-12

20. 5w+40

21. -12x+6

22. 2z-4

23. -28p-28

24. -9t+54

25. Can't tell what this problem is.  The picture cuts out.

26. -27+21p

27. 9k-27

28. -7b+9

29. 30t+12

30. 7v-28

Step-by-step explanation:

5 0
3 years ago
PLEASE HELP ME im not sure which ones i think its the first one but not sure about the rest
kodGreya [7K]

Answer:

It’s the first and the third one

Step-by-step explanation:

8 0
3 years ago
-27=2x^2-4 PLEASE HELP ASAP
Nesterboy [21]
X = [ (i sqrt46) / (2) ] ; - [ (i sqrt46) / (2) ]
6 0
3 years ago
Read 2 more answers
Multiply the polinomials (x+4)(x^2-5x+3)
NeX [460]

Answer: x^3 + x^2 - 17x + 12

Step-by-step explanation:

(x+4)(x^2-5x+3)

x^3 - 5x^2 + <u>3x</u> + 4x^2 <u>- 20x</u> + 12

underlined and bolded can be combined

That leaves you with x^3 + x^2 - 17x + 12

7 0
4 years ago
Other questions:
  • How do the graphs f(x)= |x| and g(x)= 3 3|x| relate
    11·2 answers
  • What is the sum 5/3 +(1/5) please and explain
    11·2 answers
  • How I get the LCM for 2,15
    5·2 answers
  • A circle is centered at the orgin and contains thr point (-4,-3) . What is the are of this circle?
    7·1 answer
  • The corresponding sides of abc and def have equal lengths. the area of abc is 4 square units, and the longest side of def is 5 u
    13·2 answers
  • Marci works at a bakery making cupcakes. Each package she sells contains 6 cupcakes. She puts 3 pieces of candy in the icing of
    11·1 answer
  • Id.k this should be ez for you ig
    8·2 answers
  • Order the numbers 287,901; 287,982; 287,099 from GREATEST to LEAST.
    10·2 answers
  • 1 tablet 1x per day 45 days 10 tablets per bottle
    13·1 answer
  • Scale the numerator and the denominator down by a factor of 4 (divide) to write a fraction equivalent to 8/56. (i really need he
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!