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weqwewe [10]
3 years ago
13

Uhh I’m doing math work and I need help! I’m doing Solve the system of linear equations using substitution. And I have this prob

lem and I keep getting -6 for y but the right answer for y is positive 6; can someone tell me what I’m doing wrong?!?

Mathematics
1 answer:
Debora [2.8K]3 years ago
7 0

Answer:

x=0 and y=6

Step-by-step explanation:

First, you would solve x=y-6 for x.

x=y-6 so you substitute the x in -6x-2y=-12 with (y-6)

-6x-2y=-12 → -6(y-6)-2y=-12

Simplify both sides of the equation = -8y+36=-12

Add -36 to both sides to remove it = -8y+36+-36=-12+-36

-8y+36+-36=-12+-36 → -8y=-48

Divide both sides by -8 to remove it. \frac{-8y}{-8} =\frac{-48}{-8} → y=6

I believe where you went wrong was with where you substituted y-6.

y-6 is the substitute for x so in parenthesis you would put (y-6) where x is in -6x-2y=-12 making the new equation -6(y-6)-2y=-12.

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90%

Step-by-step explanation:

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3 years ago
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Solve -3(h-6)=5(2h+3)
e-lub [12.9K]

Answer: 3/13


Step-by-step explanation:

-3 (h-6) = 5 (2h + 3)

-3h + 18 = 10h + 15

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7 0
3 years ago
What is the value of (–7 + 3i) + (2 – 6i)?
UkoKoshka [18]

Answer:

d

Step-by-step explanation:

(-7 + 3i) + (2-6i)

=-7 + 3i + 2 -6i

=(-7+2) + (3i -6i)

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7 0
3 years ago
Read 2 more answers
How much bigger is the area of a circle with a radius of 5 cm than a circle with a radius of 3 cm?
Deffense [45]

<u>Given:</u><u> </u>

  • Circle with radius 5cm and 3 cm

<u>To </u><u>Find</u><u>:</u><u> </u>

  • How much bigger is the area of a circle.

<u>Solution:</u>

Area of circle with Radius 5cm

Area of circle = πr²

Area of circle = 22/7 × 5 × 5

Area of circle = 22/7 × 25

Area of circle = <u>78.54 </u><u>cm</u><u>²</u>

Now,

Area of circle with Radius 3 cm

Area of circle = 22/7 × 3 × 3

Area of circle = 22/7 × 9

Area of circle = <u>28.27 cm²</u>

= 78.54 - 28.27

= 50.27cm

Hence,

  • <u>Area of circle is 50.27</u><u>c</u><u>m</u><u> more than that area of circle with radius 3cm</u>
6 0
3 years ago
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