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Tanya [424]
3 years ago
9

Solve each system by elimination. 3x - 2y = 1 2x + 2 y = 14

Mathematics
1 answer:
Paha777 [63]3 years ago
6 0
Add 3 and 12 , cancel -2 y+2y and and add 14 and 14
3x-2y=14
12x+2y=14
15x=28
Divide both sides by 15
X=28/15
3x 28/15 -2y=14
Y=-21/5
(X,y)=28/15, -21/5
3x 28/15 -2x(-21/5)=12x 28/15 +2x(-21/5)=14
14=14=14
(x, y)=(28/15, -21/5) is the answer
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Lunna [17]
<span>34 12/27-19 5/6
</span>You may get common denominators. 

12*2 = 24
27*2 = 54

5*9=45
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34 24/54 - 19 45/54 
Subtract 19.
15 24/54 - 45/54 
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4 0
3 years ago
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Ms. Pickford works at Game Stop in her spare time. She earns an 8% commission for all sales. She sold $1500 in the month of Nove
nordsb [41]

Answer:

$120

Step-by-step explanation:

Calculation for what was her commission

Since she sold the amount of $1,500 in the month of November in which we were told that she earns the commission of 8% for all sales which means that her commission will be calculated as :

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Therefore what her commission will be is $120

4 0
3 years ago
-4x + 8 &gt; 12 inequality solution ?
BARSIC [14]

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Step-by-step explanation:

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6 0
3 years ago
A group of friends wants to go to the amusement park. They have $469.75 to spend on parking and admission. Parking is $10.75, an
attashe74 [19]

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8 0
2 years ago
What is the y-value of the vertex of the function f(x)=-(x-3)(x+11)
lutik1710 [3]

so, this is a quadratic equation, meaning two solutions, and we have a factored form of it, meaning you can get the solutions by simply zeroing out the f(x).

\bf \stackrel{f(x)}{0}=-(x-3)(x+11)\implies 0=(x-3)(x+11)\implies x= \begin{cases} 3\\ -11 \end{cases} \\\\\\ \boxed{-11}\stackrel{\textit{\large 7 units}}{\rule[0.35em]{10em}{0.25pt}}-4\stackrel{\textit{\large 7 units}}{\rule[0.35em]{10em}{0.25pt}}\boxed{3}

so the zeros/solutions are at x = 3 and x = -11, now, bearing in mind the vertex will be half-way between those two, checking the number line, that midpoint will be at x = -4, so the vertex is right there, well, what's f(x) when x = -4?

\bf f(-4)=-(-4-3)(-4+11)\implies f(-4)=7(7)\implies f(-4)=49 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill \stackrel{vertex}{(-4~~,~~49)}~\hfill

7 0
3 years ago
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