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
jek_recluse [69]
3 years ago
10

Solve for x and y. -4x + 8y = -4 4x = 3y + 14

Mathematics
2 answers:
Natali5045456 [20]3 years ago
6 0
-4x+8y=-4    and  4x=3y+14

<span><span>−<span>4x</span></span><span>−4</span></span>=<span><span><span>−<span>8y</span></span>−4</span><span>−4</span></span><span>x=<span><span>2y</span>+1</span></span>                   
  and   
<span><span><span>4x</span>4</span>=<span><span><span>3y</span>+14</span>4</span></span><span>x=<span><span><span>34</span>y</span>+<span><span>72 </span></span></span></span>  


algol133 years ago
5 0
Hello!! Lets do this step by step! :) 
<span><span><span><span>−<span>4x</span></span>+<span>8y</span></span>=<span>−4</span></span>;<span><span>4x</span>=<span><span>3y</span>+14</span></span></span> <span><span><span>
<span /></span><span /></span><span /></span>To first get x:
<span><span><span><span>−<span>4x</span></span>+<span>8y</span></span>+<span>−<span>8y</span></span></span>=<span><span>−4</span>+<span>−<span>8y  </span></span></span></span>we are ganna add -8y to both sides
<span><span>−<span>4x</span></span>=<span><span>−<span>8y</span></span>−4</span></span><span><span><span>−<span>4x</span></span><span>−4</span></span>=<span><span><span>−<span>8y</span></span>−4</span><span>−4  </span></span></span>we are ganna divide both sides by -4
<span>x=<span><span>2y</span>+1</span></span>
 next just substitute <span><span>2y</span>+1</span> for x in<span><span><span> 4x</span>=<span><span>3y</span>+14</span></span>:</span><span><span>4x</span>=<span><span>3y</span>+14</span></span><span><span>4<span>(<span><span>2y</span>+1</span>)</span></span>=<span><span>3y</span>+14</span></span><span><span><span>8y</span>+4</span>=<span><span>3y</span>+14</span></span><span><span><span><span>8y</span>+4</span>+<span>−<span>3y</span></span></span>=<span><span><span>3y</span>+14</span>+<span>−<span>3y</span></span></span></span> 
we are ganna add -3y to both sides <span><span><span>5y</span>+4</span>=14</span><span><span><span><span>5y</span>+4</span>+<span>−4</span></span>=<span>14+<span>−4</span></span></span>
we are ganna add -4 to both sides <span><span>5y</span>=10</span><span><span><span>5y</span>5</span>=<span>105</span></span>
now we are ganna divide both sides by 5 <span>y=2</span>substitute 2 for y in<span><span> x=<span><span>2y</span>+1</span></span>:</span><span>x=<span><span>2y</span>+1</span></span><span>x=<span><span><span>(2)</span><span>(2)</span></span>+1</span></span><span>x=5</span>

And we get our answer!
x=5
y=2

Hope that helps! If you have any other questions or need further explanation just let me know! :)

You might be interested in
Simplify this expression: 13 + (–12) – (–5) = ?
Basile [38]

Answer:

A - 6

Step-by-step explanation:

13 + (–12) – (–5)


= 13 - 12 + 5;


= 6

7 0
3 years ago
Read 2 more answers
9x - 7x + 3y - 2y<br> X+ 5y
Svet_ta [14]

Answer:

3x + 6y

Step-by-step explanation:

CLT

<em><u>9</u></em><em><u>x</u></em><em><u>-</u></em><em><u>7</u></em><em><u>x</u></em><em><u>+</u></em><em><u>x</u></em><em><u>+</u></em><em><u>3</u></em><em><u>y</u></em><em><u>-</u></em><em><u>2</u></em><em><u>y</u></em><em><u>+</u></em><em><u>5</u></em><em><u>y</u></em>

<em><u>3</u></em><em><u>x</u></em><em><u>+</u></em><em><u>6</u></em><em><u>y</u></em>

5 0
3 years ago
What’s is the slope line ?
Elena L [17]

Answer:

The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run" (change in y divided by change in x).

Step-by-step explanation:

Slope, sometimes referred to as gradient in mathematics, is a number that measures the steepness and direction of a line, or a section of a line connecting two points, and is usually denoted by m. Generally, a line's steepness is measured by the absolute value of its slope,

6 0
3 years ago
Read 2 more answers
Help with both please. show work
oee [108]

Answer:

1.  y = x + 7

Step-by-step explanation:

Find the slope

Choose two points and find the slope using rise/run

(1,8) (2,9)

9-8/2-1

1/1 = 1 = m (slope)

Find b using the slope and one point

m=1   (1,8)

8 = 1 (1) + b

8 = 1 + b

7 = b

Fill in m and b into y = mx + b

y = 1x + 7

8 0
3 years ago
If x times 3 equals 9 what is x?
Rufina [12.5K]
The answer is 3 ! 3 times three equals 9
4 0
3 years ago
Other questions:
  • How do I solve this equation: (3+2i)+(2+bi)=5-4i
    9·1 answer
  • Algebra Help! I appreciate any assistance.
    15·2 answers
  • In a race, a triathlete runs 1/3 of the total distance, cycles 2/5 of the total distance, and swims the remaining distance. He s
    10·2 answers
  • There are 18 bulls and 45 cows on a ranch. If 4 more bulls and 4 more cows were added, will the ratio of bulls to cows remain th
    12·1 answer
  • Wat is .54 as a fraction?
    10·2 answers
  • The value of the function f(x) = 3x squared minus 2x for x =4
    7·1 answer
  • Calcula la altura de la que cae un balón si tarda en llegar al suelo 1.16s y la aceleración de la gravedad es de 9.81 m/s2
    7·1 answer
  • What is the meaning of the word explicit?
    5·2 answers
  • Factorise k(a³ + b³)-m(a³ + b³)​
    5·1 answer
  • 1 cup is equal to 8 fluid ounces. How many fluid ounces are in 3 cups, 3 fluid ounces?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!