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
Oksana_A [137]
3 years ago
5

What adds ups to 5 but multiplies to give you 12

Mathematics
1 answer:
qaws [65]3 years ago
6 0
X + y = 5
    xy = 12

x + y = 5
      y = -x + 5

                xy = 12
      x(-x + 5) = 12
  x(-x) + x(5) = 12
       -x² + 5x = 12
             - 12   - 12
-x² + 5x - 12 = 0
 x² - 5x + 12 = 0
x = 5 ± √25 - 48
                2
x = -5 ± √-23
           2
x = -5 ± 4.79i
            2
x = -5 + 4.79i    or    x = -5 - 4.79i
            2                              2
x = -2.5 + 2.395i   or    x = -2.5 - 2.395i
y = -2.5 - 2.395i   or    y = -2.5 + 2.395i

The two numbers that add up to 5 and multiply to 12 is -2.5 ± 2.395i, which is -2.5 + 2.395i and -2.5 - 2.395i.
You might be interested in
Sam draws two polygons that are similar. The
kirza4 [7]
scale:\frac{10}{16}=\frac{5}{8}\\\\Solution:\frac{5}{8}\times4cm=\frac{5}{2}cm=2.5cm
4 0
3 years ago
Find the vertical component given that R = 42 lb. and = 80.<br><br> 41.36<br> 7.29<br> 59.45
valentina_108 [34]

Answer:

a

Step-by-step explanation:

3 0
2 years ago
Do u know whats 103,727,495 in word for and expanded form
Studentka2010 [4]

Answer:

word form: One hundred three million seven hundred twenty seven thousand four hundred and ninety five.

expanded form: 100,000,000+3,000,000+700,000+20,000+7,000+400+90+5.

5 0
2 years ago
A student charges $31.50 for 3 hours of babysitting. If the amount the student earns babysitting is proportional to the hours sp
vodomira [7]

Answer:

C) y is equal to 10.5x

Step-by-step explanation:

$31.50 is charged for <em>3  </em>hours so, for 1 hour we need to divide 31.50 by 3, which results in 10.50. So 1 hour of babysitting is $10.50

this is because x is equal to the number of hours they babysit. we do not know the actual so it is replaced with x

and y is equal to the sum of 10.5x because we multiply the number of hours worked, and the amount per hour.

7 0
3 years ago
Below are some data examining whether reading the textbook for this course is related to class enjoyment.
Reil [10]

Answer:

13.36

Step-by-step explanation:

I will first create a table

X. Y. XY. X²

1. 20. 20. 1

2. 24. 48. 4

3. 35. 105. 9

4. 46. 184. 16

5. 67. 335. 25

6. 80. 480. 36

1. 12. 12. 1

2. 34. 68. 4

3. 34. 102. 9

5. 78. 430. 25

ΣX = 32

ΣY = 430

ΣXY = 1744

ΣX² = 130

n = 10

The formula for regression line is given as :

Y = a + bX

a = intercept

b = slope

The question requires us to find b which is the slope.

b = nΣXY-ΣXΣY/nΣX²-(ΣX)²

= 10x1744-32x430/10x130-(32)²

= 17440-13760/1300-1024

= 3680/276

= 13.36

b = 13.36

6 0
2 years ago
Other questions:
  • How would you find the x and Y intercept on a graph?
    8·1 answer
  • Factor completely: 16-2x^3
    14·1 answer
  • Please help will give lots of points<br> 3x + 14 = -4x
    7·2 answers
  • Sadie decorated her prize horse with ribbons for the Memorial Day Parade. In the mane, she used 6 feet of ribbon. She used an ad
    14·1 answer
  • How do you find the solution set for -x^2+6x&lt;0?
    10·1 answer
  • Kylie borrowed a book from a library. The library charged a fixed rental for the book and a late fee for every day the book was
    12·1 answer
  • Solve the following addition problems. Remember to carry as necessary.
    5·1 answer
  • 7-3 Multiplying Binomials
    14·1 answer
  • What does "brainliest" award do, like what does it do for me why do people say it I don't understand lol ​
    13·2 answers
  • Compare the following number :-
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!