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
artcher [175]
3 years ago
6

3x+y=8 I really don't understand this and I have tried to get the answer but always end up wrong.

Mathematics
1 answer:
Alecsey [184]3 years ago
7 0

Answer:

The solution of the system of the equation is (2, 2)

Step-by-step explanation:

Let us solve the system of equations

∵ 3x + y = 8 ⇒ (1)

∵ 3x - y = 4 ⇒ (2)

→ Add equations (1) and (2) to eliminate y

∴ (3x + 3x) + (y + -y) = (8 + 4)

∴ 6x + 0 = 12

∴ 6x = 12

→ Divide both sides by 6 to find x

∵ \frac{6x}{6}=\frac{12}{6}

∴ x = 2

→ Substitute the value of x in equation (1) to find y

∵ 3(2) + y = 8

∴ 6 + y = 8

→ Subtract 6 from both sides

∵ 6 - 6 + y = 8 - 6

∴ y = 2

∴ The solution of the system of the equation is (2, 2)

You might be interested in
In the given circle, m DE = 105° and m EG = 125°. What is the mZDEG? (3 pts)
Sophie [7]
It’s so sis is not a or b it’s c
3 0
3 years ago
A company logo is shaped like an equilateral triangle with 2-in.-long sides. What is the height of the logo? Round to the neares
deff fn [24]

Answer:

B. 1.7 in

Step-by-step explanation:

Divide the triangle into 2 congruent right angle triangles

With hypotenuse: 2

Base: 2/2 = 1

Using pythagoras theorem

2² = 1² + h²

h² = 3

h = sqrt(3)

h = 1.732050808

6 0
3 years ago
Read 2 more answers
What is the number written in standard form :six million , seven hundred thousand,twenty
Luda [366]
It would be 670.002*10^4

4 0
3 years ago
Question in picture please help!
EleoNora [17]

Answer:

part a is A and E

Step-by-step explanation:

I had token the test

3 0
2 years ago
Shaylee has 77 pennies. She will trade in the pennies to get nickels.
Ghella [55]
0.77 / 0.05 = 15.4 ...so we know it is 15 nickels
15 * 0.05 = 0.75.....0.77 - 0.75 = 0.02....with 2 pennies left over
 
ur answer is : 15 nickels and 2 pennies left over
6 0
3 years ago
Read 2 more answers
Other questions:
  • Find the polar coordinates for the point whose rectangular coordinates are (3,4). 6. Convert y x2 to polar form.
    13·1 answer
  • A certain clock is losing time. The clock loses 2/15 seconds every minute. How many seconds does the clock lose in one hour?
    7·2 answers
  • Question 6<br> Express this decimal as a fraction.<br> 1.21 =<br> ✓ DONE
    10·1 answer
  • Reflection (in Y)
    8·1 answer
  • 17/100 simplest form
    13·2 answers
  • ∠a and ∠b are supplementary angles. if m ∠a =(x +6)° and m ∠b= (7x +30)°, then find the measure of ∠a.
    6·1 answer
  • AREA How do you write1/2 as a percentage? Write your answer using a percent sign (%)<br>​
    11·2 answers
  • Hey can someone help me out with this?
    12·1 answer
  • 37) Kali ran 17 miles less than Alberto last
    6·1 answer
  • Which of these graphs represents a proportional relationship?<br><br> please help me
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!