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
Step2247 [10]
3 years ago
7

An easy question all wrong or unhelpful or no-work answers will be reported.

Mathematics
1 answer:
miss Akunina [59]3 years ago
6 0
Elimination:

7x - 3y = 20
5x + 3y = 16
(add)
12x = 36
÷ 12
x = 3

(5 × 3) + 3y = 16
15 + 3y = 16
- 15
3y = 1
÷ 3
y = 1/3

Substitution:

5x + 3y = 16
- 3y
5x = 16 - 3y
÷ 5
x = 3.2 - 0.6y

5(3.2 - 0.6y) + 3y = 16
16 - 3y + 3y = 16
16  = 16
- 16
6y = 0
÷ 6
y = 0

Sorry the substitution messed up for some reason, I'll fix it after I've answered the other question

You might be interested in
What’s the identity property of addition?
Novosadov [1.4K]

Answer:

Identity property of addition: The sum of 0 and any number is that number. For example, 0 + 4 = 4 0 + 4 = 4 0+4=40, plus, 4, equals, 4.

Step-by-step explanation:

4 0
3 years ago
Geometry math question no Guessing and Please show work thank you
Daniel [21]

Hello!

Each minute on a clock or watch is 6°, as you divide 360° by 60 minutes. As you can see, 32 minutes elapsed during the class. Therefore we just multiply.

32(6)=192

Therefore, our answer is B) 192.

I hope this helps!

5 0
3 years ago
Help?,?,?,?.!.??.?.?.?.?.?.
DaniilM [7]

Answer:

Step-by-step explanation:

b(a + 1) + a = b*a + b + a = ab + b + a

1) b(2a +1 ) = b*2a + b*1 = 2ab + b  Not equivalent.

2)a + (a +1)*b = a + ab+ b     Equivalent

3) (a +1)(b+ a) = a*(b +a) + 1*(b+a) = ab+ a² +b + a  Not equivalent.

4) (a + 1)b + a = ab+ b + a   Equivalent

5) a + b(a+1) = a +ab + b Equivalent

6) a + (a +1) + b = a + a + 1 + b = 2a + 1 +b  Not equivalent.

7) a(b +1) + b = ab + a + b  Equivalent

5 0
3 years ago
If you want brainiest than come here
Assoli18 [71]
What will happen once we enter that class code?
8 0
3 years ago
How to solve 4(2x-7)-2×=-10 step by step
KATRIN_1 [288]

Answer: x=3

Step-by-step explanation:

4(2x-7)-2x=-10

Multiply 4 with 2x and -7

8x-28-2x=-10

Add like terms which are 8x and -2x

6x-28=-10

Add 28 to both sides so the -28 cancels out

6x=18

Divide both sides by 6 to isolate the x

Answer= x=3

6 0
3 years ago
Other questions:
  • A survey asked a group of students to choose their favorite type of pet. The results of the survey are shown in the table.
    13·2 answers
  • Triangle ABC has vertices ofA(–6, 7), B(4, –1), and C(–2, –9).Find the length of the median from
    7·1 answer
  • What is the answer to number 12
    9·1 answer
  • Please help!!! put image of what to do.
    8·1 answer
  • What is the term used to describe the design or "map" of where each item is placed on a shelf or peg hook on a fixture?
    9·1 answer
  • A lamp that normally sells for $35 is on sale for
    10·1 answer
  • Please help. <br> Is it no solution, one solution or infinitely many<br> Solution.
    15·1 answer
  • Describe a cube use the words base edges and vertices in your description
    8·1 answer
  • What does the A stand for in the star problem solving process
    9·1 answer
  • Solve.<br> 13 - 2x1 = 9<br> A. X=-3<br> B. X=6<br> C. X=-3, x = 6<br> D. x = 3, x = 6
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!