All categories

2 years ago

Find the value of two numbers if their sum is 17 and their difference is 3.

Mathematics

1 answer:

AVprozaik [17]2 years ago

4 0

Step-by-step explanation:

x+y=17 (First equation)

x-y=3 (Second equation)

Solving Equation (i)

x+y=17

x=17-y(First equation)

Putting value of x in equation (ii)

x-y=3

x=3+y

17-y=3+y

17=3+y+y

17=3+2y

2y=17-3

y=14/2

y=7

Putting value of y in equation(i)

x=17-y

x=17-7

x=10

You might be interested in

TRUE OR FALSE: FOR ANY FUNCTION, X=F^-1(Y), THEN Y=F(X). PLEASE EXPLAIN

Vesnalui [34]

Answer:

True.

Step-by-step explanation:

For example let f(x) = 3x + 1 then f-1(x) is found as follows

Let f(x) = y = 3x + 1 then

3x = y - 1

x = (y-1) / 3

x = f-1(x) = (x - 1)/3.

So:

Replacing the x in y by (x - 1)/3 :-

x = f(-1)(y) = ( (3x + 1) - 1) / 3

= 3x / 3

= x.

So y = f(x).

7 0

2 years ago

What are the solutions of x3>−1 ? Graph the solutions.

Ksivusya [100]

X>-1/3, the graph would be filled everything to the right of -1/3 on the x axis

5 0

2 years ago

Find the value of x to the nearest tenth. (figure not drawn to scale)

givi [52]

Answer:

16 +6=22 9 +x = 22

x=22-9

x= 13

4 0

2 years ago

Please help me......!

Nostrana [21]

the answer would be 100 pounds of chicken and 30 pounds of beef

6 0

2 years ago

Write the slope intercept form of the equation of the line through the given points.

Zanzabum

Answer:

You use the formula (y to the second power minus y to the first power minus the same formula with the two different points

Step-by-step explanation:

6 0

2 years ago