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Oksana_A [137]
3 years ago
9

Please help me. question is "solve each system of linear equations by substitution"

Mathematics
1 answer:
tigry1 [53]3 years ago
3 0

Answer:

(-9,-7)

Step-by-step explanation:

Since x = 2y+5,

substitute that into the other equation. Then you have

3(2y+5)-5y = 8

6y+15-5y = 8

y = -7

so, x = 2(-7)+5 = -9

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Given m\parallel nm∥n, find the value of x and y.
Sindrei [870]

Answer:

See below ↓↓

Step-by-step explanation:

<u>Finding x</u>

  • Both the angles containing the x variable are on the same side of the transversal
  • There is a property which states that : two angles on the same side of the transversal are supplementary
  • Therefore, they add up to 180°
  • ⇒ 8x + 12 + 2x + 18 = 180
  • ⇒ 10x + 30 = 180
  • ⇒ 10x = 150
  • ⇒ <u>x = 15</u>

<u></u>

<u>Finding y</u>

  • The angles at the top are vertically opposite angles (VOA), meaning that they are equal
  • ⇒ 8x + 12 = 3y - 18
  • ⇒ 3y = 8(15) + 12 + 18
  • ⇒ 3y = 120 + 30
  • ⇒ 3y = 150
  • <u>⇒ y = 50</u>
8 0
2 years ago
which measure would you report to describe the diffrences between the most electricity used in 1 month and the least
frozen [14]
Probably kJ/month if that’s what you want
5 0
4 years ago
What is the maxima minima or zero for this graph???
ANTONII [103]

Maximum is the highest a graph can reach. In this case the graph continues forever therefore the maximum is:

infinity or ∞

The minimum is the lowest place the graph reaches. In this case it would be:

-6

The zeros are where the graph intersects the x axis. In this case it would have two zeros, which are:

(-3, 0) and (0.5, 0)

Hope this helped!

~Just a girl in love with Shawn Mendes

5 0
4 years ago
Ok so i have to do this assginemnt and i didn't know it existed so plz answer this question-
Galina-37 [17]

Answer:

$600 (ML),  $200 (MW), $1,035 (total raised), $965 (need to raise needed)

Step-by-step explanation:

50 %   50/100 = 0.5

$1200 x 0.5 = $600 Mrs LeBlanc's class has raised

$600/3 = $200 Ms. Warner's class has raised (MW)

600 + 200 + 235.14 = $ 1,035 Has been raised

1,200 - 1,035 =  $965  is the amount they still need to raise

5 0
3 years ago
Shayla has 6 1/2 pounds of potato salad into containers each of which holds 1 5/8 pounds. How many containers does she need?
Oksi-84 [34.3K]

let's firstly convert the mixed fractions to improper fractions and then divide.

\bf \stackrel{mixed}{6\frac{1}{2}}\implies \cfrac{6\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{13}{2}}~\hfill \stackrel{mixed}{1\frac{5}{8}\implies \cfrac{1\cdot 8+5}{8}}\implies \stackrel{improper}{\cfrac{13}{8}} \\\\[-0.35em] ~\dotfill

\bf \stackrel{\textit{total salad}}{\cfrac{13}{2}}\div \stackrel{\stackrel{\textit{conainer's}}{\textit{capacity}}}{\cfrac{13}{8}}\implies \cfrac{\begin{matrix} 13 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}}{\underset{1}{\begin{matrix} 2 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}}}\cdot \cfrac{\stackrel{4}{\begin{matrix} 8 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}}}{\begin{matrix} 13 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}}\implies 4

6 0
4 years ago
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