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
damaskus [11]
2 years ago
7

Solve the system using substitution. Show all work. ( 4х + 5y = 7 у = 3х + 9

Mathematics
1 answer:
Lina20 [59]2 years ago
3 0

Answer:

(4x+5y=7

y=3x+9

4x+5(3x+9)=7

4x+15x+45=7

19x=7-45

19x= -38

19×/19=-38/19

x= -2

whlie y=3x+9

y=3(-2)+9

y= -6+9

y=3 end solution

x= -2,y= 3

You might be interested in
The Monthly Bank pays 3 percent interest, compounded monthly, on their savings accounts. The Daily Bank pays 3 percent interest,
Novosadov [1.4K]

Answer:

The amount that we should deposit in each bank is around $942.

Step-by-step explanation:

Case 1:

A=$1000

n = 12

t = 2

r = 3% or 0.03

p = ?

The compound interest formula is :

A=p(1+\frac{r}{n})^{nt}

Substituting values in the formula;

1000=p(1+\frac{0.03}{12})^{12\times2}

=> 1000=p(1.0025)^{24}

=> 1000=1.06175p

p=\frac{1000}{1.06175}

p = $941.84

Case 2:

A=$1000

n = 365

t = 2

r = 3% or 0.03

p = ?

1000=p(1+\frac{0.03}{365})^{365\times2}

=> 1000=p(1.0000822)^{730}

=> 1000=1.06184p

p=\frac{1000}{1.06184}

p = $941.76

The amount that we should deposit in each bank is around $942.

5 0
3 years ago
Read 2 more answers
What is the domain of the graph?
maksim [4K]
Domain:
-4 ≤ x ≤ 3
or in different form:
x ∈ [-4; 3]
4 0
3 years ago
Write an inequality to describe the possible values of x.
Papessa [141]

Answer:

d

Step-by-step explanation:

x<9+7, and x+7>9

solve

x<16

x>2

2<x<16

6 0
3 years ago
Multiply: -14y(y+11)
Daniel [21]

Answer:

-14y^2-154y

Step-by-step explanation:

-14y(y+11)

Distribute

-14y*y + -14y*11

-14y^2-154y

6 0
2 years ago
Read 2 more answers
What is the slope of y=-4x-3y?
lawyer [7]
Answer: m= -1 , B=0
3 0
3 years ago
Read 2 more answers
Other questions:
  • HELP ASAP PLEASE!!!!
    14·1 answer
  • Triangle ABC has vertices at A(2, 2), B(4,7), and C(6,2). Classify the triangle according to the side lengths.
    10·1 answer
  • Find the slope that passes through (2,-4) and (5,2)
    11·1 answer
  • You deposit $1000 in an account that pays 4 1/2% annual interest compounded monthly. How much will you have in the bank after 9
    15·2 answers
  • What is the value of the flowers?
    15·1 answer
  • Solve these problems with x = -3 and y = 2
    13·2 answers
  • Match each hypotenuse length with the leg lengths that will create a right triangle.
    9·1 answer
  • A population numbers 18,000 organisms initially and grows by 16% each year.
    14·1 answer
  • Review the attachments. Review the process of solving an equation and fill in the blanks.
    9·1 answer
  • Find the length of the line below.<br><br> A. 2 in.<br> B. 2 3/16 in.<br> C. 2 5/16 in.<br> D. 3 in.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!