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
Makovka662 [10]
3 years ago
11

Solve the system of equations using substitution. −2x + y = 3.5 −2y = 3x

Mathematics
1 answer:
gogolik [260]3 years ago
3 0

Answer:

\huge\boxed{x=-1;\ y=-1.5}

Step-by-step explanation:

\left\{\begin{array}{ccc}-2x+y=3.5\\-2y=3x&\text{divide both sides by (-2)}\end{array}\right\\\left\{\begin{array}{ccc}-2x+y=3.5&(1)\\y=-1.5x&(2)\end{array}\right\\\\\\\text{Substitute (2) to 1):}\\-2x+(-1.5x)=3.5\\-2x-1.5x=3.5\qquad\text{combine like terms}\\-3.5x=3.5\qquad\text{divide both sides by (-3.5)}\\\dfrac{-3.5x}{-3.5}=\dfrac{3.5}{-3.5}\\\boxed{x=-1}\\\\\text{Substitute it to (2):}\\y=1.5(-1)\\\boxed{y=-1.5}

You might be interested in
Need halp 12x84 - -7000
satela [25.4K]

12x84-(-7000)

1008+7000

=8008

Easy

5 0
3 years ago
Read 2 more answers
PLEASE PLEASE HELP ME !!!
Veronika [31]

Answer:

i7 jsisisheh grrrddfff

5 0
2 years ago
isaac drew a shape that has three sides. each side is 9 cm long. what is the perimeter of the shape?.
Dvinal [7]
Since there are 3 sides and each of those 3 sides are 9 cm, you would multiply 9*3 and your answer would be 27 cm.
5 0
3 years ago
4,11,7,14,10,17,.....?
jek_recluse [69]

Answer:

4,11,7,14,10,17,13,20,16,23,19,26........

8 0
2 years ago
.009 is 1/10 of what
IRINA_888 [86]

Answer:

If it's of which decimal than the answer will be 0.09

7 0
2 years ago
Other questions:
  • Andy is 6 feet tall. if 1 inch equals 2.54 centimeters, how long is Andy, to the nearest centimeter
    6·1 answer
  • When 42 is added to a number the result is 37 less than 7 times the number. what is the number ?
    15·1 answer
  • The range of values for the sample mean that fall within 1 standard error of the mean in a sampling distribution is M39 to M43.
    6·1 answer
  • If a suspect is in possession of 20 grams of cocaine how many ounces does he possess? What will be the charge? As a fraction
    12·1 answer
  • Using the equation below, what is the inverse operation needed to isolate the variable?
    8·1 answer
  • What is the radius of tye circle
    14·1 answer
  • A forest covers 66,000 acres. A survey finds that 0.2% of the forest is old-growth trees. How many acres of old-growth trees are
    12·1 answer
  • Find the sum of -1.5 +3.5 + 2
    9·2 answers
  • Triangle N P O is shown. Line O N extends through point M to form exterior angle P N M. Angle N P O is 38 degrees. Angle P O N i
    7·1 answer
  • A researcher conducted an experiment to investigate the effects of working in crowded versus uncrowded conditions on the job sat
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!