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kogti [31]
2 years ago
10

Solve using linear combination. Show all work. 9X + 5Y 35 And -2x-5y=0

Mathematics
2 answers:
BARSIC [14]2 years ago
5 0

Answer:

x=5, y=-2

Step-by-step explanation:

9x + 5y =35

-2x-5y=0

Add the equations together

9x + 5y =35

-2x-5y=0

----------------------

7x  = 35

Divide each side by 7

7x/7 = 35/7

x = 5

Now find y

9x+5y = 35

9(5) +5y = 35

45 +5y =35

Subtract 45 from each side

45-45 +5y = 35-45

5y = -10

Divide each side by 5

5y/5=-10/5

y = -2

Mice21 [21]2 years ago
5 0

Answer:

solve your equation then Subtract 2x from both sides next Subtract 2 from both sides. last Divide both sides by 2

Step-by-step explanation:

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Victoria’s printer can print 8.804 in one minute if Victoria’s prints page for 0.903 minutes, about how many pages will she have
SVETLANKA909090 [29]

Victoria’s printer can print 8.804 in one minute if Victoria’s prints page for 0.903 minutes,

We apply unitary method

In one minute the number of pages printed is 8.804. we need to find the number of pages for 0.903 minutes

1 minute = 8.804 pages

0.903 minutes = ? pages

We multiply 8.804 by 0.903

8.804 * 0.903 = 7.95

Number of pages printed = 7.95 pages


8 0
3 years ago
Mathematics of inequality
Lady_Fox [76]

Answer:

(-3x²+5x-2)-2(x²-2x-1)

-3x²+5x-2-2x²+2x+2

-5x²+7x

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8 0
3 years ago
Solve each of the following quadratic equations<br><br> 3x=0.5x^2<br><br><br> 0=5x^2-2x+6
UNO [17]

<u>Question 1</u>

<u />3x=0.5x^{2}\\\\6x=x^{2} \\ \\ x^{2}-6x=0 \\ \\ x(x-6)=0 \\ \\ \boxed{x=0, 6}

<u>Question 2</u>

<u />0=5x^{2}-2x+6 \\ \\ x=\frac{2 \pm \sqrt{(-2)^{2}-4(5)(6)}}{2} \\ \\ x=\frac{2 \pm \sqrt{-116}}{10} \\ \\ x=\frac{2 \pm 2i\sqrt{29}}{10} \\ \\ \boxed{x=\frac{1 \pm i\sqrt{29}}{5}}

6 0
2 years ago
What is the slope of a line that contains the points (12,17) and (-8,-17)
professor190 [17]
\frac{y2 - y1}{x2 - x1}
\frac{ - 17 - 17}{ - 8 - 12} = \frac{ - 34}{ - 20} = \frac{17}{10}
Alternative forms:
1 \frac{7}{10} \: or \: 1.7
Slope: 17/10
Equation : y= 17/10x
6 0
3 years ago
meena found the number of scoops that her friend ordered by sloving the equation 0.75x + 5 =14 exlpain
vampirchik [111]
X=12
0.75x + 5=14
Take away 5 on both sides
So 0.75x +5-5=14-5
0.75x=9
0.75x divided by 9 = 12
6 0
2 years ago
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