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
Inessa05 [86]
3 years ago
9

What two numbers multiplied together equal -420, but added together equal 1

Mathematics
2 answers:
inna [77]3 years ago
8 0
 x * y = -420
x + y = 1.....x = 1 - y

y(1 - y) = -420
-y^2 + y = -420
y^2 - y - 420 = 0
(y + 20)(y - 21) = 0

y + 20 = 0       x + y = 1
y = -20            x - 20 = 1
                       x = 21

y - 21 = 0      x + y = 1
y = 21           x + 21 = 1
                     x = -20

ur 2 numbers are 21 and -20

Alexeev081 [22]3 years ago
7 0
-21 x 20 multiplied together equal -420 but added together equals 1
You might be interested in
Help me please! :)<br> ㏒(4x)=2
Ray Of Light [21]
Answer: x=25 work below :)

4 0
3 years ago
PLEASE HELP ME SO I CAN GRADUATE!!!!!
Aleks04 [339]

Answer:

A: -41/9

Step-by-step explanation:

Substitute the point (4, -5) and slope -1/9 into the equation y = mx + b.

-5 = -1/9(4) + b

-5 = -4/9 + b

Solve for b:

b = -41/9

Our equation: y = -1/9(x) - 41/9

7 0
3 years ago
If gas prices are now $3.75 and they were up 10% from 6 months ago, how much were gas prices 6 months ago?
Hatshy [7]

Given

gas prices are now $3.75 and it up 10% from 6 months ago.

Find out how much were gas prices 6 months ago.

To proof

gas prices now = $3.75

let the gas price 6 month ago = x

gas price now is rise up 10% from 6 months ago

First write 10% in simpler form

= \frac{10}{100}

= 0.1

Now the equation becomes

0.1x + x = 3.75

1.1x = 3.75

x =\frac{3.75}{1.1}

x = 3.41 (approx)

Thus gas prices 6 months ago be $ 3.41 (approx )

Hence proved

7 0
3 years ago
Ahmed is working at a restaurant . His boss pays him $15.50 per tour and promises a raise of $1.25 per hour every 6 months. Whic
aksik [14]

Answer:

B

Step-by-step explanation:

you have to make chart. You have to add 1.25 to your total every 6 months.

  1. Start             $15.50
  2. 6 months     $15.75
  3. 12 months    $18.00
  4. 18 months.   $19.25
5 0
3 years ago
Diego and Lin are drinking milkshakes. Lin starts with 12 ounces and drinks 1/4 an ounce per second. Diego starts with 20 ounces
sammy [17]

Answer:

Lin = 48 seconds  

Diego = 30 seconds  

Step-by-step explanation:

Hi, to answer this question we have to divide the total ounces of drink by the amount that each one drank per second, for each case.

Mathematically speaking:

Lin = 12 ounces / (1/4) ounces/second = 12/ (1/4) = 48 seconds  

Diego = 20 ounces / (2/3) ounces/second = 20/ (2/3) = 30 seconds  

Feel free to ask for more if needed or if you did not understand something.

3 0
3 years ago
Other questions:
  • What is the area of the triangular section ?
    6·2 answers
  • Convert 16 over 25 into a percentage ?
    14·2 answers
  • (x - 2)2 + (y + 3)2 =1).<br> What is the radius ?
    9·1 answer
  • If 15 counters are the whole set how many are three fifths of the set?
    5·1 answer
  • What is the equation of the line that passes through the point (1,5) and has a slope of -1
    15·1 answer
  • A construction company is moving rocks it takes 3/4 hours to move 12 rocks the construction company has already moved 50 of the
    11·1 answer
  • Find the values of x and y for the isosceles trapezoid
    12·1 answer
  • Explanation and answer please :)
    14·1 answer
  • Find a 95% confidence interval for the mean auditory response time for subjects with a visual response time of 200 ms. The 95% c
    11·1 answer
  • $2,500 at 6% for 3 years​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!