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
Temka [501]
3 years ago
5

Solve each system of linear equations by substitution x+y=3 -x+y=5​

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
8 0

Answer:

x = -1, y = 4

Step-by-step explanation:

x + y = 3

-x + y = 5

This means that y = 3 - x

We can substitute this value into the equation

-x + y = 5

-x + 3 - x = 5

3 - 2x = 5

Subtract 3 from both sides

-2x = 2

Divide both sides by -2

x = -1

Plugging this number into the equation, we have:

-1 + y = 3

Add 1 to both sides

y = 4

You might be interested in
2. A circle of radius 12 units is divided into 8 congruent slices.
adelina 88 [10]

Answer:

a: 18pi

b: 3pi

Step-by-step explanation:

part a:

total area = 12^2*pi = 144pi

144pi/8 = 18pi

part b:

total circumference = 12*2*pi = 24pi

24pi/8 = 3pi

3 0
4 years ago
I just need help with 3-6 (explain answers please)
antiseptic1488 [7]

Answer:

3-6=3

Step-by-step explanation:

8 0
3 years ago
The green darner is one of the largest dragonflies. It weighs about four hundredths of an ounce. Write four hundredths in standa
Tju [1.3M]

Answer:

Four hundredths

In standard form - 4\times 10^{-2}

Step-by-step explanation:

Given : The green darner is one of the largest dragonflies.

It weighs about four hundredths of an ounce.

To write : Four hundredths in standard form.

Solution :

Standard form is when we write a larger number in a smaller way.

For example : 20000= 2\times 10^4

So, according to question

Largest dragonflies weighs about four hundredths of an ounce.

Four hundredths means 0.04

In standard form - 4\times 10^{-2}

7 0
3 years ago
What would be the answer to 4j + j - 4 < -9
Tresset [83]

<em>HOPE</em><em> </em><em>THIS</em><em> </em><em>WILL</em><em> </em><em>HELP</em><em> </em><em>U</em><em>.</em><em>.</em><em>.</em>

6 0
4 years ago
Read 2 more answers
Find the value of x.
Shalnov [3]

Answer:

74 degrees

Step-by-step explanation:

The arc degree measurement of the arc that is colored in orange is given as 254 degrees.

The remaining part is the part in green.

The green part plus the orange part should equal 360 degrees because that would make a full rotation around the circle.

360-254=106.

The green arc has measurement 106 degrees.

We can find x by computing half the difference of the arcs there.

That is,

x=\frac{1}{2}(254-106)

x=\frac{1}{2}(148)

x=74

8 0
4 years ago
Read 2 more answers
Other questions:
  • 20 points please help!
    12·2 answers
  • Answer the following questions: 2x+5, 11-3x, x²+4x, and x-7​
    13·1 answer
  • At what value of x does the graph of the following function F(x) have a vertical asymptote?
    8·1 answer
  • 3621 ×4 help me on this please
    15·2 answers
  • What is 5.2x10^4 in standard form​
    6·1 answer
  • Tom gets $12 off a box of chocolates that had an original price of $48.What percentage is the discount
    7·2 answers
  • Help me with this question
    13·2 answers
  • Find the slope of the line (-9, 1) (1, 9)​
    14·2 answers
  • When subtracting with negative numbers, change the problem to an<br> problem and
    6·1 answer
  • Which of the following are possible side lengths for a triangle
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!