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Nina [5.8K]
3 years ago
11

I need help showing my work for the following system by substitution:

Mathematics
1 answer:
VMariaS [17]3 years ago
4 0

Answer:

y = 4x - 2 .........(eqn1)\\ y = 3x + 6.........(eqn2) \\ sub \: 1 \: in \: eqn \: 2 \\ y = 3x + 6 \\ 4x - 2 = 3x + 6 \\ 4x - 3x = 6 + 2 \\ x = 8 \\ sub \: x \: in \: eqn \: 2  \\ y = 3x + 6 \\ y = 3(8) + 6 \\ y = 24 + 6 \\ y = 30

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The larger of two numbers is five more than the smaller number. If the sum of the numbers is 59, find the numbers
Andrews [41]

Answer:

27 and 32.

Step-by-step explanation:

Let the two numbers be A and B.

The larger number (let's use B) is 5 more than the smaller one (A). In other words:

B=5+A

Their sum is 59. So:

A+B=59

This is a system of equations. Solve by substituting the first equation into the second. Thus:

A+(5+A)=59

Combine like terms:

2A+5=59

Subtract 5 from both sides:

2A=54

Divide both sides by 2:

A=27

So, the smaller number is 27.

This means that the bigger number is 27+5=32.

So, the two numbers are 27 and 32.

And we're done!

4 0
3 years ago
A function is vertically compressed by a factor of 1/2, reflected in the y-axis, and translated right 3. The resulting function
aksik [14]

Answer:

monkey mode

Step-by-step explanation:

cause why not

5 0
3 years ago
the area of a rectangle is 4,320 ft2. the ratio of the length to the width is 6:5. find the length of the rectangle. a. 12 ft b.
xeze [42]
Let the length of the rectangle = 6x and the width = 5x
Area = 6x(5x) = 30x^2 = 4,320
x^2 = 4,320/30 = 144
x = 12 ft

Therefore, length = 6x = 6(12) = 84 ft
6 0
3 years ago
Give an example of a polynomial that has the asymptotes of x=5 and y=0.5
BaLLatris [955]
(x²+4x+3)/2(x²-10x+25)

the horizontal asymptote when the numerator and the denominator have the same degree (in this case, both of a degree of 2) is ration of the coefficients of the numerator and denominator. In this case, the coefficient for numerator x² is 1, and the coefficient for the denominator 2x² is 2, so the horizontal asymptote is y=1/2=0.5

the vertical asymptote is the x value. the denominator cannot be zero, if x²-10x+25=0, x would be 5, so the vertical asymptote is x=5 

this is just one example. There can be others:
(2x²+5x+2)/[(4x-7)(x-5)]  for another example, but this example has a second vertical asymptote 4x-7=0 =>x=7/4
5 0
3 years ago
The interior angle of a regular polvgon is 9 times the size of its exterior angle
Thepotemich [5.8K]
<h3>Answer:   20 sides</h3>

==================================================

Work Shown:

x = exterior angle

9x = interior angle

interior + exterior = 180

9x+x = 180

10x = 180

x = 180/10

x = 18

n = number of sides

n = 360/x

n = 360/18

n = 20

There are <u>20</u> sides to the regular polygon.

Side notes:

  • The formula to determine n only works for regular polygons.
  • A polygon with 20 sides is known as an icosagon.
  • Any pair of adjacent interior and exterior angles are supplementary. They add to 180 degrees.
3 0
2 years ago
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