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ra1l [238]
3 years ago
13

Solve each system using the substitution method 6x-y=-4 and 2x+2y=15

Mathematics
1 answer:
Fynjy0 [20]3 years ago
8 0
Convert 6x - y = -4 into y = mx + b
Y - 4 = 6x
Y = 6x + 4
Substitute that into second equation
2x + 2(6x + 4) = 15
2x + 12x + 8 = 15
14x = 7
X = 1/2
6(1/2) - y = -4
3 - y = -4
-y = -7, y = 7
Final answer: x = 1/2, y = 7
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love history [14]

Answer:

<h3>The answer is option C</h3>

Step-by-step explanation:

2√24 + 5√54

To combine the radicals first make sure the radicals have the same square root

That's

<h3><u>For 2√24</u></h3>

<h3>2 \sqrt{24}  = 2 \sqrt{4 \times 6}  = 2 \times 2 \sqrt{6}</h3><h3>= 4 \sqrt{6}</h3><h3 /><h3><u>For 9√54</u></h3>

<h3>5 \sqrt{54}  = 5 \sqrt{9  \times 6}  = 5 \times  \sqrt{9}  \times  \sqrt{6}</h3><h3>= 5 \times 3 \times  \sqrt{6}</h3><h3>= 15 \sqrt{6}</h3><h3 />

Since they have the same square root we can combine them

That's

<h3>4 \sqrt{6}  + 15 \sqrt{6}  = (4 + 15) \sqrt{6}</h3>

We have the final answer as

<h2>19 \sqrt{6}</h2>

Hope this helps you

3 0
3 years ago
U0ukj787y8fr7hjhy7 which one
Sedbober [7]

If ABC and DEF are complementary, then the value of x will be,

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5 0
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Olenka [21]

Answer:

issolat variable

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Step-by-step explanation:

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serg [7]
Hello : 
<span> -7x-6y=59...(1)
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</span>
6 0
3 years ago
Find the shaded area of the circle below.
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Answer:

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the answer is option <em>H</em>

6 0
3 years ago
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