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
Zielflug [23.3K]
3 years ago
5

3x + y=11 -2x + y=1 Solve using substitution method

Mathematics
2 answers:
Alja [10]3 years ago
8 0

Step-by-step explanation:

here's the solution : -

=》3x + y = 11

=》y = 11 - 3x

now, plugging the value of y in equation 2

=》-2x + y = 1

=》-2x + 11 - 3x = 1

=》-5x = -10

=》x = 2

now, plugging the value of x as 2 in equation 1

=》3x + y = 11

=》6 + y = 11

=》y = 11 - 6

=》y = 5

nata0808 [166]3 years ago
6 0

Answer:

3x+yl=11

-2x+y=11

y=11-3x

-2x+11-3x=11

-5x=11-11

so x=0

y=11-0

y=11

You might be interested in
A landscaper needs 348 pounds of plant food. He has 114 pounds in his truck, and another 46 pound at his shop.
andrew-mc [135]

Answer:

\frac{19}{12}\ pounds

or

1\frac{7}{12}\ pounds

Step-by-step explanation:

<u><em>The correct question is </em></u>

A landscaper needs 3 4/8 pounds of plant food. He has 1 1/4 pounds in his truck, and another 4/6 pound at his shop. How many more pounds of plant food does the landscaper need?

Let

x ----> the additional pounds of plant food needed for the landscaper

we know that

The additional pounds of plant food needed for the landscaper plus the pounds in his truck plus the pounds in his shop must be equal to the total pounds of plant food needed

so

The linear equation that represent this problem is

x+1\frac{1}{4}+\frac{4}{6}=3\frac{4}{8}

Convert mixed number to an improper fractions

1\frac{1}{4}=1+\frac{1}{4}=\frac{4*1+1}{4}=\frac{5}{4}

3\frac{4}{8}=3+\frac{4}{8}=\frac{3*8+4}{8}=\frac{28}{8}=\frac{14}{4}

Substitute in the expression above

x+\frac{5}{4}+\frac{4}{6}=\frac{14}{4}

solve for x

Multiply by (4*6) both sides to remove the fractions

24x+30+16=84

Combine like terms left side

24x+46=84

subtract 46 both sides

24x=84-46

24x=38

Divide by 24 both sides

x=\frac{38}{24}\ pounds

simplify

x=\frac{19}{12}\ pounds

Convert to mixed number

\frac{19}{12}\ pounds=\frac{12}{12}+\frac{7}{12}=1\frac{7}{12}\ pounds

7 0
4 years ago
Solve 7x – 9 = 28 + 4(x – 1).
lidiya [134]
7x - 9 = 28 + 4x - 4
7x - 4x = 28 - 4 + 9
3x = 33
x = 11
7 0
4 years ago
A square tablecloth covers 6 square feet. What is the approximate length of one side of the tablecloth?
sveta [45]

Answer:

Is should be 50 feet for the length of tablecloths

7 0
3 years ago
Read 2 more answers
In a museum, Nick is looking at a famous painting through a mirror at an angle of 58 degrees Find the angle the painting makes w
Anna [14]

here's your answer

The angle of incidence of the painting is 58°, one property of mirrors is angle of incidence = angle of reflection. Therefore angle of reflection the painting makes with the mirror is 58°.

HOPE IT HELPS....

6 0
3 years ago
Read 2 more answers
PLEASE HELP ME I AM PAYING 100 POINTS!!
Keith_Richards [23]

Answer:

1. 0.05x90

2. 4.5

Step-by-step explanation:

1. 0.05(50+40)

50+40=90

0.05x90

2. 0.05(50)+0.05(40)

0.05x50= 2.5

0.05x40= 2

2.5+2= 4.5

That all i could do sorry but I hope this helps

4 0
3 years ago
Read 2 more answers
Other questions:
  • Mary is buying several items that cost $128.25 total. She is using a store coupon for 35% off her purchases. She has to pay 4% s
    8·2 answers
  • Write the names of these decimals 0.089 3.71 0.3 13.701 5.005​
    15·2 answers
  • Find the circumference. C=2πr
    15·1 answer
  • Find the diameter in units.
    14·1 answer
  • The trapezoid is composed of a rectangle and two triangles. What is the area of the rectangle? What is the total area of the tri
    13·1 answer
  • PLEASE HELP WITH THESE 4 PROBLEMS
    9·1 answer
  • One diagonal of a kite is twice as long as the other diagonal. If the area of the kite is 400 square meters, what are the length
    11·1 answer
  • a football field is drawn to a scale of 1cm represents 5cm if the field is 70m by 50m find the length and breadth on the drawing
    9·2 answers
  • Find the slope and the y-intercept of the line in the graph.
    12·1 answer
  • Solve the equation: 7/10 + 1/5
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!