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Svetllana [295]
3 years ago
6

Choose the solutions to the two equation system.6.0 + 3y = 3015+ y = 7​

Mathematics
1 answer:
zloy xaker [14]3 years ago
3 0

Answer:

y= -8 or 8

Step-by-step explanation

30-6= 24

24/3=8

y=8

15+y=7

y=-8

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Please I need help it’s for a quiz I will give you a Brainly
tankabanditka [31]

Answer:

A

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
Solve for x. <br><br> x + 8 = -15
anygoal [31]
1. Subtract 8 from both sides
2. Simplify to get x= -23

5 0
2 years ago
Which of the following expressions represents "no more than 5”?
zepelin [54]

Answer:

"no more than 5"

"less than or equal to 5"

x \le 5.

I can't see your inequalities or the thing your question called expressions.

Step-by-step explanation:

If is no more than it is less than or equal to.

So no more than 5 means less than or equal to 5.

x \le 5.

8 0
3 years ago
an electrition charged $70 for 2 hours of work and 115 for 5hours of work write an equtionto find the cost for y and xk
Westkost [7]

\bf \begin{array}{ccll} \stackrel{x}{hours}&\stackrel{y}{cost}\\ \cline{1-2} 2&70\\ 5&115 \end{array}~\hspace{10em}(\stackrel{x_1}{2}~,~\stackrel{y_1}{70})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{115}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{115-70}{5-2}\implies \cfrac{45}{3}\implies 15


\bf \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-70=15(x-2)\implies y-70=15x-30 \\\\\\ y=15x+40\impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}


as you already know, a direct proportional variation has a constant of variation "k", y = kx, which in this case that'd be the slope, namely 15.

7 0
3 years ago
Xavier (x) has $20 more than Sara (s). Their combined money totals $90. Which system of equations represents this situation?
borishaifa [10]

Answer:

B) x + s = 90, x - s = 20

Step-by-step explanation:

x + s = 90 represents that both Xavier and Sara's money combined is $90.

x - s = 20 represents that Xavier has 20 more dollars than Sara.

8 0
2 years ago
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