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
lyudmila [28]
3 years ago
12

Solve the system of linear equations by elimination. x + y = 1 5x + 3y = -3

Mathematics
1 answer:
Taya2010 [7]3 years ago
6 0

Hello from MrBillDoesMath!

Answer:

x = -3, y = 4

Discussion:

x + y = 1     =>

y = 1 -x

Substitute this y value into the second equation:

5x + 3y = -3           =>

5x + 3(1-x) = -3      => 3(1-x) = 3 -3x

5x + 3 - 3x = -3      => 5x -3x = 2x

2x + 3 = -3              => subtract 3 from both sides

2x       = -3 -3 = -6  => divide both dies by 2

x = -6/2 = -3

As x+y = 1, (-3) + y = 1 => y = 1 + 3 = 4

Thank you,

MrB

You might be interested in
3.) A linear function passes through the points (0, 2) and (-4,0).
kotegsom [21]

Answer:

Step-by-step explanation:

The x-intercept is where y is 0.

The y-intercept is where x is 0.

The x-intercept would be (-4, 0) and the y-intercept (0, 2)

Using the slope formula, (y2-y1/x2-x1), we can find the slope which is 1/2.

7 0
3 years ago
HELPPP ASAPPP 30 POINTS
KiRa [710]

Answer:

Twenty percent of $47.83 is equal to $14.66

If you did 20% of 47.83, that would equal 9.566. So, now you need to take the 5, which is equal to 500 cents, and turn it into 5 dollars. (One hundred cents is a dollar so 500 cents , is 5 dollars.) now it’s 9 + 5. Easy, it’s 14. Now add back the 66, and it’s 14.66 dollars. So the answer is...

14.66

Hope this helps =3

4 0
3 years ago
Find the range of the function. f(x) = (x - 2)2 + 2
Aliun [14]
[2,INFINITY SIGN)
{y|y greater than and equal to 2}

i hope it helps

5 0
4 years ago
Read 2 more answers
What is the equation of the line that passes through the point (2,-6)and has a slope of −1?
Alecsey [184]

Step-by-step explanation:

Hey there!!

Just simply work with it.

We know that we have to use one point formula to find the equation of a st.line passing through point and slope is given.

So, just do accordingly.

The point is (2,-6) and slope is -1.

(y - y1) = m(x - x1)

Where, "m" is a slope.

Put all values.

(y  + 6) =  - 1(x - 2)

Simplify them to get answer.

(y + 6) =  - x + 2

y =  - x - 4

Therefore the equation is y= -x-4 OR can be written as x+y+4=0.

<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

4 0
3 years ago
The bird population in Louisiana is decreasing at a rate of 15% per day due to the oil spill. If there are 12,000 birds today, h
tiny-mole [99]
<h3>Answer: 395 birds</h3>

==============================================

Work Shown:

The formula to use is

A = P*(1+r)^x

where,

P = 12000 is the initial population

r = -0.15 represents the growth rate in decimal form; which is really a decay/decrease due to r being negative

x = 21 days have passed by (3 weeks = 3*7 = 21 days)

These values lead to...

A = P*(1+r)^x

A = 12000*(1+(-0.15))^21

A = 12000*(1-0.15)^21

A = 12000*(0.85)^21

A = 12000*0.03294560142183

A = 395.34721706196

A = 395

8 0
4 years ago
Other questions:
  • Ten times a number increased by 4 is no more than 25, how do u write it as an inequality?
    15·1 answer
  • PLA HELP ME ASAP FOR 12 and 13 (SHOW WORK!!!!!) + LOTS OF POINts!
    6·1 answer
  • Are 5/6 and -4.713 on the same side or the opposite side of zero ?
    12·1 answer
  • Can you guys help me out here?
    5·1 answer
  • How many times does 28 go into 126
    11·1 answer
  • I need help asap please help!!
    7·1 answer
  • Find y if the line through the points (-4,y) and (8,2) has a slope of -1/3
    15·1 answer
  • I NEED HELP WITH THIS QUESTION&lt; (PLEASE EXPLAIN!)
    13·1 answer
  • Quandrilateral ABCD is inscribed in a circle. What is the measure of angle A? A=(2x-40)B 116 C D=x what is the measure of angle
    15·1 answer
  • Could someone explain how to solve this please?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!