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bogdanovich [222]
3 years ago
9

X + y = 9 x + 3y = 13 If (x,y) is the solution to the given system of equations, what is the value of y?​

Mathematics
1 answer:
Bogdan [553]3 years ago
7 0

Answer:

D.) 3

Step-by-step explanation:

x + 3 = 8

x - 3 = 2

so that means x = 5 and y = 3

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the temperature outside this morning was 15F. the temperature increased 27.9F. what is the temperature now
nirvana33 [79]
The temperature will now be 42.9F
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3 years ago
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3. Which of the following quadratic equations has no solution? A) 0 = −2(x − 5)2 + 3 B) 0 = −2(x − 5)(x + 3) C) 0 = 2(x − 5)2 +
klemol [59]

Answer:

D) 0 = 2(x + 5)(x + 3)

Step-by-step explanation:

Which of the following quadratic equations has no solution?

We have to solve the Quadratic equation for all the options in other to get a positive value as a solution for x.

A) 0 = −2(x − 5)2 + 3

0 = -2(x - 5) × 5

0 = (-2x + 10) × 5

0 = -10x + 50

10x = 50

x = 50/10

x = 5

Option A has a solution of 5

B) 0 = −2(x − 5)(x + 3)

Take each of the factors and equate them to zero

-2 = 0

= 0

x - 5 = 0

x = 5

x + 3 = 0

x = -3

Option B has a solution by one of its factors as a positive value of 5

C) 0 = 2(x − 5)2 + 3

0 = 2(x - 5) × 5

0 = (2x -10) × 5

0 = 10x -50

-10x = -50

x = -50/-10

x = 5

Option C has a solution of 5

D) 0 = 2(x + 5)(x + 3)

Take each of the factors and equate to zero

0 = 2

= 0

x + 5 = 0

x = -5

x + 3 = 0

x = -3

For option D, all the values of x are 0, or negative values of -5 and -3.

Therefore the Quadratic Equation for option D has no solution.

3 0
3 years ago
Tell whether the angles are complementary, supplementary or neither m^3=27, m^4=63
Fofino [41]
Supplementary is when it is a straight line that is equal to 180 degrees and complementary is a right angle which is 90 degrees
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30 POINTS FOR SIMPLE QUESTION
Komok [63]

-4 = y + 3


y = -4x - 3


 Solve for Y in the first equation:

-4 = y +3

Subtract 3 from both sides:

y = -7

Now using the addition method:

rewrite the second equation as 4x+y = -3


Multiply y = -7 by - 1 to get -y = 7

Now add the two together:

4x +y = -3

    -y =7

4x = 4

Divide each side by 4:

x = 4/4 = 1


Then replace x in one of the equations to solve for y which is -7

X = 1, Y = -7



5 0
3 years ago
If the graph of f(x)= 3^x is reflected over the x-axis, what is the equation of the new graph?
Lerok [7]

Answer:

  • g(x) = - 3^x

Step-by-step explanation:

<u>Reflection over x-axis results in:</u>

  • f(x) → - f(x) translation

<u>Therefore the new function is:</u>

  • g(x) = - 3^x
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2 years ago
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