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
Crank
3 years ago
13

PLEASE HELP 100 POINTS!!

Mathematics
2 answers:
jarptica [38.1K]3 years ago
8 0

Answer:

y = x^2 + 5x -3

y-x =2

Replace y in the second equation with the first one:

x^2 + 5x -3 - x = 2

Simplify by combining like terms:

x^2 + 4x -3 = 2

Subtract 2 from both sides:

x^2 + 4x -5 = 0

Fctor the polynomial:

(x-1) (x+5) = 0

Solve for both X's:

x = 1 and x = -5

Now replace x in the second equation with both value and solve for y:

y -1 =2, y = 3

y - -5 =2, y +5 = 2, y = -3

Now combine the sets of answers:

(1,3) and (-5,-3)

Click to let others know, how helpful is it

5.0

2 votes

THANKS 1

Report

Not the answer you're looking for?

FIND MORE

rabiasbn

Rank: Ambitious

458/500

0/5

To support your homeschooling, you have UNLIMITED ANSWERS for the time being.

Your influence

1

Answering Streak

Your Streak is on! Answer another question tomorrow and keep it going.

Fun fact

An apple, potato, and onion all taste the same if you eat them with your nose plugged

1

2

2

Get +4

bonus

2

Last 7 days

Overall

Your stats from the last 7 days compared with the previous 7 days

Popularity

11

People learning from your answers.

+10%

Brainliest

0

Other users can choose your answers as Brainliest, if they are truly the best!

Thanks

0

Try helping others. It's fun!

Questions answered

1

+100%

21 Mar - 27 Mar

0

Sat

0

Sun

0

Mon

0

Tue

0

Wed

0

Thu

1

Fri

Mathematics

1

Read more on Brainly.com - brainly.com/question/13617002#readmore

Step-by-step explanation:

tresset_1 [31]3 years ago
3 0

y = x^2 + 5x -3

y-x =2

Replace y in the second equation with the first one:

x^2 + 5x -3 - x = 2

Simplify by combining like terms:

x^2 + 4x -3 = 2

Subtract 2 from both sides:

x^2 + 4x -5 = 0

Fctor the polynomial:

(x-1) (x+5) = 0

Solve for both X's:

x = 1 and x = -5

Now replace x in the second equation with both value and solve for y:

y -1 =2, y = 3

y - -5 =2, y +5 = 2, y = -3

Now combine the sets of answers:

(1,3) and (-5,-3)

You might be interested in
Read the complete problem before answering.
lisabon 2012 [21]

1 1/8 = 1.125

2 2/8 = 2.25

1.125 +2.25 = 3.375 yards total

n = 3.375 x 4.30

n = 14.5125 rounds to $14.51 total

7 0
3 years ago
How to I find the 3rd derivative of a function
Margaret [11]
By simplifing i think

3 0
3 years ago
Aaron scored 452.65 marks out of 600 in the final examination. How many marks did he lose?
lana [24]

Answer:

He lost 147.35 marks

Step-by-step explanation:

Take the total marks and subtract the marks he got to find the marks he lost

600-452.65= 147.35

7 0
3 years ago
Read 2 more answers
A study of 40 English composition professors showed that they spent, on average, 13 minutes correcting a student's term paper. T
photoshop1234 [79]

Answer:

a)

90% confidence interval for the mean grading time of all composition papers.

(12.47981 , 13.52019)

b)

Appropriate inequality

The interval is  ( 12.47981 < μ < 13.52019)

Step-by-step explanation:

<u><em>Explanation</em></u>:-

a)

Given sample size 'n' = 40

Mean of the sample = 13 minutes

standard deviation = 2 min

level of significance = 0.10 or 90%

90% confidence interval for the mean grading time of all composition papers.

( x^{-} - Z_{0.1} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.10} \frac{S.D}{\sqrt{n} } )

 ( 13 - 1.645 \frac{2}{\sqrt{40} } , 13 +1.645 \frac{2}{\sqrt{40} } )

( 13 - 0.52019 , 13 + 0.52019)

(12.47981 , 13.52019)

b)

The interval is  ( 12.47981 < μ < 13.52019)

7 0
3 years ago
How much chromium-51 will be left after 7 months?
Makovka662 [10]

Answer:

It seems there's more information in you question that you haven't posted.

7 months = 7 * (365/12) = 213 days

The half-life of chromium 51 is 27.7 days.

After 7 months, chromium 51 will have undergone 7.69 half-lives.

To solve for the ending amount we'll use the formula:

Ending Amount = Beginning Amount / 2^n where 'n' = # of half-lives

We'll say the beginning amount =1

Ending Amount = 1 / 2^7.69

Ending Amount = 0.0048426082

Basicaly if you started with 1 gram of chromium 51, after 7 months you would have 0.0048426082 grams.

Source: https://www.1728.org/halflife.htm

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Find the area of the shape below, giving your answer to 1 decimal place
    12·1 answer
  • 45% of 80.374 is a number between
    5·1 answer
  • here is a list of numbers. 7,12,16,20,27,40,56,64. a work out the difference between the two square numbers in the list. b work
    13·2 answers
  • What is the slope of a line passing through (1,9) and (-3,16) ?
    10·1 answer
  • Any Help would be appreciated!!<br><br> Multiply.<br><br> (5 − 1)(6^2 + 3 + 7)
    8·2 answers
  • Which equation can pair with X- y=-2 to create a consistent and dependent system?
    12·1 answer
  • Help me plz 5c+16.5=13.5+10c
    13·1 answer
  • What is the equation in slope-intercept form of the line that passes through the points (2,-3)
    5·1 answer
  • Help will give brainlist if right!!!!
    15·1 answer
  • Write the equation of the line in slope-intercept form with slope m=4 through the point (-2,5)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!