All categories

2 years ago

Solve for x and y: x+y=5 x−y=a

Mathematics

1 answer:

9966 [12]2 years ago

5 0

Answer:

x=5/2 + a/2, y= 5/2 - a/2

Step-by-step explanation:

We can solve this system using addition of the equations

x+y=5

2x =(5+a)

x=(5+a)/2= 5/2 +a/2

x=5/2 +a/2

x-y=a

y = x - a , x=5/2 + a/2

y= 5/2 + a/2-a

y= 5/2 - a/2

You might be interested in

Miguel has triple David's money, while Lisbeth has ten dollars less than David. The sum of their money totals $95. How much mone

ahrayia [7]

Answer:

Miguel has $63

Lisbeth has $11

David has $21

Step-by-step explanation:

let Miguel share be M

let Lisbeth share be L

let David share be D

from the question, we know that

M=3D

L=D-10.

M+L+D=95

thus,

3D+(D-10)+D= 95

3D+D-10+D= 95

5D-10 = 95

5D= 95+10

5D= 105

D= 105/5

D= 21.

thus,

M = 3D = 3×21

= $63

L = D-10 = 21-10

= $11

(63+21+11)$ = $95

3 0

3 years ago

Factor -8 out of 56a-64 <br> PLEASE HELP

Pachacha [2.7K]

Answer:

-8(8-7a)

Step-by-step explanation:

56a-64=-8(8-7a)

7 0

2 years ago

The value of the correlation coefficient is always in the range<br> a. 0 to 1 b. 1 to 1 c. 1 to 0

dlinn [17]

Answer:

-1 to 1

Step-by-step explanation:

The correlation Coefficient gives the degree of relationship between two variables while also giving an hint about the type of relationship between them, (positive or negative). Correlation Coefficient could take any value bwuqwen - 1 and 1. With values closer to - 1 or 1 indicating a strong relationship between the variables, Coefficient of 0 means no relationship and a negative value means negative relationship while a positive value plies a positive relationship.

7 0

3 years ago

Help? please? anyone? thank youuu

Montano1993 [528]

The answer is 6. you just count the boxes in between the two points

8 0

3 years ago

A line includes the points (5, 3) and (6, 5). What is its equation in slope-intercept form?

Viktor [21]

Answer: m= 2

Step-by-step explanation:

5 0

2 years ago