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
ycow [4]
3 years ago
9

Solve the system by the elimination method. 7x+5x=-25 5x+3y=-23

Mathematics
1 answer:
hodyreva [135]3 years ago
5 0

Answer:

x = -10; y = 9

Step-by-step explanation:

(1)         7x +  5y =  -25

(2)        5x +  3y =  -23     Multiply (1) by 3

(3)       21x + 15y =  -75     Multiply (2) by 5

(4)      25x + 15y = -115     Subtract (3) from (4)

           4x          =  -40     Divide each side by 4

(5)         x          =   -10    Substitute (5) into (2)

     5(-10) +   3y =  -23

       -50  +   3y =  -23     Add 50 to each side

                    3y =   27      Divide each side by 3

                      y =     9

x = -10; y = 9

Check:

(1)  7(-10) + 5×9 = -25

       -70 +  45   = -25

                -25   = -25

(2) 5(-10) + 3×9 = -23

        50  + 27  = -23

                -23  = -23

You might be interested in
An apartment building has a parking lot with 12 parking spaces for
xxMikexx [17]

Answer:

...80u9

Step-by-step explanation: Rank me brain list or thanks it if this helps:) Hope it helps!

3 0
3 years ago
Read 2 more answers
Juan plans to put a fence around his rectangular garden. The length of
Lelechka [254]

Answer: the length of fencing that Juan needs to surround the entire garden is 6x - 4

Step-by-step explanation:

The perimeter of a plane shape is the distance round the shape. The garden is rectangular in shape.

The formula for determining the perimeter of a rectangle is expressed as

Perimeter = 2(L + W)

The length of the garden is (2x – 5) feet and the width of the garden is (x + 3) feet. The length of fencing that Juan would need is

2[(2x - 5) + (x + 3)]

= 2(2x + x - 5 + 3)

= 2(3x - 2)

= 6x - 4

3 0
3 years ago
Adam will plant up to 41 acres on his farm with wheat and corn. Fewer than 28 acres will be planted with corn.
Nadya [2.5K]
W + c < = 41....because wheat and corn added together is less then or equal to 41 acres

c < 28...because corn will be less then 28 acres

so ur 2 inequalities are : w + c < = 41 and c < 28


6 0
4 years ago
Read 2 more answers
20. The recipe below shows the amount of each ingredient required to make four servings of pasta. Based on this information, det
stepan [7]
4 3/8 cups of cheese
1 2/3 cups of milk
6 1/4 cups of pasta

Divided each number but four and multiplied my answer by 10
3 0
3 years ago
Read 2 more answers
Please help me anyone
gladu [14]

Answer:

0 or - 5

Step-by-step explanation:

x^2+5x=0

x(x+5)=0

x=0 or - 5

4 0
3 years ago
Other questions:
  • If 3a+2b=24 and 4a+5b=53, what is the value of a+b?
    7·1 answer
  • Matt needs to make $230 for a trip. He plans on selling 16 bags of snacks to raise money. The lowest acceptable price for him to
    14·2 answers
  • What is the trigonometric ratio for cos C?
    12·1 answer
  • 57 toys are split into groups of 4 toys. What question do we need to answer here? please don't give wrong answers this test is a
    5·1 answer
  • Julia needs to cut 4 pieces of yarn, each with the same length and a piece of yarn 7.75 inches long let x represent the length o
    6·1 answer
  • find the equation of the line that is perpendicular to y= -1/5x-3 and contains the point (1,2) answer all boxes please
    13·1 answer
  • What is nine more than a number y, if that number is 4? Evaluating Algebraic Expressions
    8·1 answer
  • Use the figure to complete the statements,
    13·2 answers
  • Help please :/
    6·1 answer
  • Helllllllllllllllllllllllllllllllllllppppppppppppppppppppppp
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!