Dara is mixing her own paint color, using 3 parts green paint to 2 parts blue to 1 part white

Mathematics

1 answer:

mash [69]2 years ago

6 0

Answer:

Ummm this isn't really math what'ss the question?

Step-by-step explanation:

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Solve the following system of equations algebraically: y = x2 - 6x + 9 y = -9x + 19

Ratling [72]

{(-5,64), (2,1)}

linear equation: y = -9x + 19
quadratic equation: y = x² - 6x + 9

Substitute the y in the quadratic equation by the its value in the linear equation.

-9x + 19 = x² - 6x + 9
      - 19    - 19 *subtract 19 to both sides
-9x    = x² - 6x -10
+9x + 9x *add 9x to both sides
0 = x² + 3x - 10
0 = (x + 5) (x - 2) *Factor

Set each factor = 0 and solve
x + 5 = 0 ; x - 2 = 0
x = -5    ; x = 2

Find the corresponding value of y using the linear equation.
y = -9x + 19

x = -5 x = 2
y = -9(-5) + 19    y = -9(2) + 19
y = 45 + 19 y = -18 + 19
y = 64 y = 1

(-5,64) (2,1)

Check each value on each equation.
y = x² - 6x + 9
(-5,64) (2,1)
64 = (-5)² - 6(-5) + 9 1 = 2² - 6(2) + 9
64 = 25 + 30 + 9 1 = 4 - 12 + 9
64 = 64    1 = 1

y = -9x + 19
64 = -9(-5) + 19 1 = -9(2) + 19
64 = 45 + 19 1 = -18 + 19
64 = 64 1 = 1

{(-5,64), (2,1)}

3 0

2 years ago

Draw 3 rows with 2 counters

Volgvan

Answer

It would be 3x2 which equals 6

Example-

8 0

2 years ago

Please help me this is my test I'm stuck on this one

Tema [17]

Ok pretty sure the probability of a 5 is 1/5

The probability of a # greater than 3 is 2/5

And the probability of a 2 or 5 is 2/5

(1/5 is 20% and 2/5 is 40% if you need those)

8 0

2 years ago

Use a graph to describe the domain and range of each of the functional sequence below

Y_Kistochka [10]

Answer:

ℝ

Step-by-step explanation:

All linear functions have a range and domain of all real numbers.

I am joyous to assist you anytime.

8 0

2 years ago

5x + 3 = 23 5. 4 = 3a – 14 6. 2y + 5 = 19 i need help with this equation

mrs_skeptik [129]

Answer:

Step-by-step explanation:

5x + 3 = 23 x=4

5. 4 = 3a – 14 a=6

6. 2y + 5 = 19 y=7

6 0

3 years ago