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
Bingel [31]
3 years ago
6

30 Solve by elimination: 2x - 3y = -6 -2x - 2y = 26 ,

Mathematics
1 answer:
Arturiano [62]3 years ago
5 0

Answer:

x=-9,y=-4

Step-by-step explanation:

2x-3y=-6...(1)

-2x-2y=26...(2)

To solve we will have to eliminate one of the given variables, the variable to be eliminated is x

And it can be done by adding up (1) and (2)

It gives

-5y=20

Divide both sides by-5

y=-4

Then substitute the value of y into (1)

2x-3(-4)=-6

2x+12=-6

Substrate 12 from both sides

2x=-18

Divide both sides by 2

x=-9

Therefore x gives -9 and y gives-4

You might be interested in
Two numbers multiply to be -100 and add to 0
ipn [44]

Well,  +10  and  -10  can do that job.

6 0
3 years ago
Tp 3 Work Backwards
Pachacha [2.7K]

Answer:

Your equation option is possibly in here somewhere.

Step-by-step explanation:

A = <em>C - 2</em>

B = A + 6  → A = <u>B - 6 </u>

<em>C - 2</em> = A = <u>B - 6</u> → B = <u><em>C + 4</em></u>

44 = C + B + A

44 = C + (<u><em>C + 4</em></u>) + (<em>C - 2</em>)

44 = 3C + 2

42 = 3C

C = 7

3 0
3 years ago
What is the first step to solve the equation x^2-3=15​
Otrada [13]

You will need to add 3 to each side.

x^2-3=15

    +3   +3

x^2=12

and go from there

6 0
3 years ago
Read 2 more answers
A scuba diver diving with an 80 cubic foot tank of air, needs to resurface when his air in the
Burka [1]

At sea level atmospheric pressure is 1 bar absolute (1 standard atmosphere =101 kPa=1.013 bars). The weight of the atmosphere exerts a pressure which will support a column of water 10 m high; 10 m under water the pressure on a diver is 200 kPa. The volume of gas in an early diving bell full of air at sea level is halved at 10 m according to Boyle’s law; at 20 m pressure is 300 kPa absolute and the gas is compressed into one third the volume.

Dry air is composed of roughly 21% oxygen, 78% nitrogen, and 1% other gases. According to Dalton’s law the partial pressure of oxygen at any depth will be 21% of the total pressure exerted by the air and the partial pressure of nitrogen will be 78% of total pressure.

Gases dissolve in the liquid with which they are in contact. Nitrogen is fat soluble and at sea level we have several litres dissolved in our bodies. If the partial pressure of nitrogen is doubled (by breathing air at 10 m depth) for long enough for equilibration to take place we will contain twice as many dissolved nitrogen molecules as at sea level.

6 0
3 years ago
The compound interest on Rs. 50000 at 4% per annum for 2 years compound annually is
statuscvo [17]

Answer:

$54080

Step-by-step explanation:

Step one:

given

principal= Rs. 50000

rate= 4%= 0.04

time= 2 years

Required

The final Amount A

Step two

Applying

A= P(1+r)^t

substitute

A= 50000(1+0.04)^t

A= 50000(1.04)^2

A= 50000*1.0816

A= 54080

$54080

6 0
3 years ago
Other questions:
  • Please help!!!! It’s homework.
    12·1 answer
  • Part of a recipe is shown if all the ingredients are mixed together how much sauces will be made
    9·1 answer
  • Carol jogged 1 3/4 miles on 5 days last week.She jogged 2 1/4 miles on 4 days this week.Was her total distance greater last week
    12·1 answer
  • PLEASE HELP!! Write the proportion. 120 feet is to 150 feet as 8 feet is to 10 feet. (18 points!!)
    9·2 answers
  • I WILL MARK BRAINLIST
    6·1 answer
  • you have an intial amount of $45 in a savings account and you deposit an equal amount into the account each week. After 5 weeks
    5·1 answer
  • D-(2d+1) plz I need urgent solving​
    14·1 answer
  • -4(-4 + x) &gt; 56<br> Can someone help with this pleasee. WILL GIVE BRAINLIEST, RATING, AND HEART
    5·2 answers
  • elena went to a sporting goods store that was having a sale she bought a tennis racket and 3 cans of tennis balls the tennis rac
    8·1 answer
  • Suppose we roll one fair six-sided die, and flip six coins. what is the probability that the number of heads is equal to the num
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!