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
ikadub [295]
3 years ago
9

The product of two numbers is 45 and their Arithmetic mean is 7. find the numbers​

Mathematics
2 answers:
Mnenie [13.5K]3 years ago
8 0
Xy = 45
(x+y)/2=7
---------
x+y = 14
Ah. So we can simplify the problem to, 'the product of two numbers is 45 and their sum is 14'. This shouldn't too hard to guess: the numbers are 5 and 9
ikadub [295]3 years ago
5 0
Let the two numbers be x and y.
Now, according to question
x*y=45 (let this be eq1)and (x+y)/2=7(let this be eq2)
x+y=14
x=14-y
Putting this in eq1
(14-y)*y=45
14y-y^2=45
This is a quadratic equation
y^2-14y+45=0
You can solve a quadratic any way you want. Here factorization method is being used.
y(y-9)-5(y-9)=0
(y-5)(y-9)=0
y can be equal to 9 or 5
Using any of the y values we can find x by placing y in eq1 or 2[preferably 2 because addition]
If y=5 then x=9
If y=9 then x=5
You might be interested in
What are the slope and the y-intercept of the linear function that is represented by the table?
vlabodo [156]

Answer:

y=-2+12

Step-by-step explanation:

2ed row shows y int, suing x-x/y-y slope is -2

3 0
3 years ago
Pre algebra help ( will give brainliest ) sorry if it's hard to see
valentinak56 [21]
It would have changed by 1/3 is ur answer
4 0
3 years ago
Read 2 more answers
Help pls dont give just the answer pls step by step so i can understand
Irina-Kira [14]

Answer:

y=14

Step-by-step explanation:

Since this is an isosceles triangle due to opposite sides being congruent, the base angles would also be congruent.

50 = 2x \\x=25

plug in 25 in 2x and you would get 50°

Since the sum of a triangle is 180° you could set up an equation 50+50+5y+10=180

Then, add 50+50=100+10=110

then you would then have 5y+110=180\\

subtract 110 from 180, leaving you with 70

5y=70

then divide and you would get 14

Check:

5(14)+10+50+50= 180

8 0
3 years ago
Ty in advance god bless
damaskus [11]

Step-by-step explanation:

3/7y + 3/4x = 3/5

y = -3/4x.7/3 +3/5.7/3

y = -7/4x +7/5

so the slope is -7/4

6 0
3 years ago
Read 2 more answers
ILL GIVE BRAINLIEST!!!!!!!!!!!!!!
emmasim [6.3K]
Option B) A and C I think
4 0
3 years ago
Read 2 more answers
Other questions:
  • A line is 45/64 inch long. Find the length of a line 4/5 as long.
    10·2 answers
  • Erin is buying floor tile to put in a room that is 10 ft by 15 ft. She has chosen tiles that are 18 in by 18 in. Assuming that s
    8·1 answer
  • What is 4 to the second power multiplied by 4 to the negative three power
    5·2 answers
  • I forgot how to do this stuff-
    12·1 answer
  • PLEASE HELP!!!
    9·2 answers
  • I need help pls i have to be done by 2
    6·1 answer
  • 4:3=x:6, find the value of x please help me
    15·1 answer
  • a circle has a diameter of 32 inches find the circumference of the circle to the nearest tenth. use 3.14 for pi
    11·2 answers
  • Quadrilateral ABCD undergoes a reflection across the x-axis to form quadrilateral a b c d the coordinates of a r the reflected q
    5·1 answer
  • Simplify 2a + 14 - 5a - 7 + 8a​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!