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
Inessa05 [86]
3 years ago
12

Solve the system using substitution and describe your steps. x=y-3 2x+y=12

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
5 0
First you plug in for x,

2(y-3)+y=12

Then you solve for y
2y-5+y=12
-10y+y=12
-9y=12
-9y/9=12/-9
y=-1.333333333333333333333333333333333333333333333333333333333

You might be interested in
Given: <SPT = <RQT, ST = RT Prove: PR = QS​
andrey2020 [161]

Answer:

See explanation

Step-by-step explanation:

Consider triangles PTS and QTR. In these triangles,

  • ST=RT - given;
  • \angle SPT=\angle RQT - given;
  • \angle STP=\angle RTQ - as vertical angles when lines PR and SQ intersect.

Thus, \triangle PTS\cong \triangle QTR by AAS postulate.

Congruent triangles have congruent corresponding sides, so

PT=QT

Consider segments PR and QS:

PR=PT+TR\ [\text{Segment addition postulate}]\\ \\QS=QT+TS\ [\text{Segment addition postulate}]\\ \\PT=QT\ [\text{Proven}]\\ \\ST=RT\ [\text{Given}]

So,

PR=SQ\ [\text{Substitution property}]

7 0
3 years ago
4x(10-3+2) simplify expression
iris [78.8K]

Answer:

20

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A triangle has an angle that measures 90 degrees what type of triangle could it be​
vekshin1

A triangle that has an angle that measures 90 degrees would be a Right Triangle.

6 0
3 years ago
Read 2 more answers
Convert 950 us dollars to brtish pund sterling. use 1 dollar= 0.62 british pund sterling
Vaselesa [24]

That would be 950 * 0.62 = 589 British pounds.

6 0
3 years ago
Lowest denominator 1/15 9/5 3/8
Stels [109]
<span>LCD(<span>115</span>, <span>95</span>, <span>38</span>) = LCM(15, 5, 8) = 23×3×5 = 120</span>
<span><span>115</span> = <span>8120</span></span><span><span>95</span> = <span>216120</span></span><span><span>38</span> = <span>45120
</span></span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • Neilson Company publishes data on the typical American and his television viewing habits. Fifteen adults filled out questionnair
    8·1 answer
  • It was recently estimated that uninsured vehicles out number insured ones by about 6 to 5 if there are 2002 vehicles in a county
    6·1 answer
  • Select all that apply.
    15·2 answers
  • I don’t really understand this question. So it will be awesome if you help me with it.
    12·1 answer
  • There is a bag filled with 4 blue, 3 red and 5 green marbles.
    7·1 answer
  • Joshua bought one pound of strawberries for $3.20. What is the price, in dollars per ounce of strawberries?
    14·1 answer
  • Find the equation of the line with the given properties: passes<br> through (2,3) and (2,9).
    7·1 answer
  • Im a little confuse on this so i will need some help please!
    9·2 answers
  • To amend a country's constitution 7/9 of the 69 states in that country must approve the amendment. If 52 states approve an amend
    7·1 answer
  • Selim walked 1/12 of a mile to the coffee shop in 712 of a mile to the dry cleaners how far apart is the coffee shop from the dr
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!