Solve the system of equations 2r + 2s = 50 and 2r – s = 17.

2 answers:

8 0

2r +2s = 50
2r - s = 17

Multiply the top by -1
-2r - 2s = -50
2r - s = 17
-3s = -33
s = 11

Then plug 11 in the first equation to get r
2r + 2(11) = 50
2r + 22 = 50
2r = 28
r = 14

so 11 and 14

shutvik [7]3 years ago

3 0

R = 14
s = 11

2(14)+2(11)=50
28+22=50

2(14) - 11 =17
28 - 11 =17

You might be interested in

The following graph shows a proportional relationship.

elena-s [515]

Answer:

The constant of proportionality is thus 1

Step-by-step explanation:

Note that the green line passes through (6, 6) and has a y-intercept of 0. Thus, the equation of the line is y = (6/6)x + 0, or y = x, or y = 1x.

The constant of proportionality is thus 1, which is also the slope of this line.

8 0

2 years ago

If f(x) = 2x-1 and g(x) = x^2-3x-2, find (f+g)(x)

alina1380 [7]

All this means is (f(x)) + (g(x))

2x-1+ x^2-3x-2=

=== x^2 - x -3

4 0

3 years ago

Read 2 more answers

The graph of a proportional relationship contains the point (8, 4).

Softa [21]

$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
(\stackrel{x}{8}~~,~~\stackrel{y}{4})\implies 
\begin{cases}
x=8\\
y=4
\end{cases}\implies 4=k8\implies \cfrac{4}{8}=k\implies \cfrac{1}{2}=k
\\\\\\
\boxed{y=\cfrac{1}{2}x}$

6 0

3 years ago

P(n) = n + 1; Find p(6)

True [87]

Answer:

p(6) = 7

Step-by-step explanation:

p(n) = n + 1

Let n = 6

p(6) = 6 + 1

p(6) = 7

7 0

3 years ago

Read 2 more answers

Geometry Question Need Help. Solve for x:

diamong [38]

Answer:

im not sure

Step-by-step explanation:

sorry

5 0

3 years ago