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
Maksim231197 [3]
3 years ago
8

How do you solve 4x+2y=10 x-y=13 using substitution

Mathematics
1 answer:
Readme [11.4K]3 years ago
3 0

\left \{ {{4x+2y=10} \atop {x-y=13}} \right.

x=13+y

4(13+y)+2y=10

52+4y+2y=10

6y=-42

y=-\frac{42}{6}=-7

y=-7

x=13-7=6

<span>\left \{ {{x=6} \atop {y=-7}} \right.</span>

You might be interested in
The perimeter of a rectangle is 52 cm. If its width is 2 cm more than one-third of its length, find the dimensions of rectangle.
Jobisdone [24]

Answer:

(B) 18 cm x 8 cm

Step-by-step explanation:

let the length be x,

then the width is \frac{1}{3}x + 2

2( \frac{1}{3}x + 2 + x ) = 52

\frac{1}{3}x + 2 + x  = 26

\frac{4}{3} x = 24

x = (24*3)/4

x = 18

then the length is 18 cm

and width is (1/3)*18 + 2 = 8

Therefore the dimensions are length:width = 18 cm : 8 cm

7 0
2 years ago
Read 2 more answers
If n/5=45/75.find the value of n.
Stells [14]

Start with

\dfrac{n}{5}=\dfrac{45}{75}

Multiply both sides by 5:

n = \dfrac{45\cdot 5}{75} = \dfrac{45}{15} = 3

3 0
3 years ago
Read 2 more answers
How many pounds is a gram
beks73 [17]
Dontcha mean how many grams are in a pound

7 0
3 years ago
Read 2 more answers
How to do!!!<br> please help
Margarita [4]

Step-by-step explanation:

Supplementary angle adds up yo 180°

So angle 2 is supplementary to angle 3

7 0
2 years ago
Read 2 more answers
X varies directly as y, and x = 153 when y = 9. Find x when y = 13.
goblinko [34]
X = 153 = 17* 9, so when <span>y = 13, x= 21*13= 273

x= 17  18   19  20  21 
y=    9  10   11  12  13</span>
6 0
3 years ago
Other questions:
  • Write a rational number whose opposite and absolute value are the same.
    9·1 answer
  • A carpet sells for $27.99 a square yard. what is the price of the carpet per square meter?
    7·1 answer
  • URGENT!! PLEASE HELP!
    7·2 answers
  • Please help please please please help
    9·1 answer
  • Two angles are complementary. the measure of one angle is 6° more than one-half of the measure of the other. find the measure of
    9·2 answers
  • Simplify, if possible.
    14·1 answer
  • The following table shows a proportional relationship between www and zzz.
    10·2 answers
  • 62/8 <br> With a remainder
    13·2 answers
  • Write the name of each decimal place indicated (pls don't troll I'm failing I'll give brainliest)
    5·1 answer
  • WILL GIVE BRAINEST ANSWER TO WHO EVER EXPLAINS BEST!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!