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Sindrei [870]
3 years ago
8

PLEASE EXPLAIN and Help me solve this thank you!!!

Mathematics
1 answer:
Nina [5.8K]3 years ago
3 0

Answer:

it could be drawn using maths

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What is the constant of variation kk of the direct variation, y =kx through (-3,2)?
irakobra [83]
\bf \qquad \qquad \textit{direct proportional variation}
\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad  y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------\\\\
\stackrel{(-3~~,~~2)}{\textit{we also know that }}
\begin{cases}
x=-3\\
y=2
\end{cases}\implies 2=k(-3)\implies \cfrac{2}{-3}=k
8 0
3 years ago
9+3x2 10 points please
Hitman42 [59]

answer is 24

9+3=12

12×2=24

7 0
4 years ago
How to solve this, I need to find the zeros, vertex, y-intercept, max or min, and the equation in vertex form
Murrr4er [49]
The standard form of a quadratic equation is: ax^2 + bx + c = 0
a = 1 ; b = -2 ; c = -8
To find the zeros, you put in x=0 which gives (0,-8) and use the quadratic formula to find the other zeros; f(x) = 0

Quadratic formula:
x = (-b+/-√(b^2-4ac))/2a

The x-value for the vertex is -b/2a
x = 1
put this in for x and solve for the f(x)
1 - 2  - 8 = -9
vertex: (1, -9)

The vertex form of a quadratic equation: f(x) = a(x-h)^2 + k
where (h, k) is the vertex.
If you don't know the vertex, you would need to factor it into this form. Look at the center term bx, what you could be added to the equation to make a perfect square.

f(x) = (x^2 - 2x + 1) - 9

By splitting the -8 into 1 - 9 we've created a perfect square (x-1)^2

f(x) = (x-1)^2 - 9

7 0
3 years ago
What is the slope of the line between the points ( 2 , 7 ) and ( 7 , 1 )?
Lelu [443]

Answer:

slope = - \frac{6}{5}

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (2, 7 ) and (x₂, y₂ ) = (7, 1 )

m = \frac{1-7}{7-2} = \frac{-6}{5} = - \frac{6}{5}

6 0
2 years ago
Read 2 more answers
How do i find the angle of theta if my right angle triangle has the opposite of 14 and adjacent of 12. i have used theta= tan-1
BartSMP [9]

Answer:

see explanation

Step-by-step explanation:

What you have written is correct in that

Θ = tan^{-1}(\frac{14}{12}) = 49.4°

If this is the angle you obtained it is correct.

I suggest you check the mode on your calculator is at deg setting and not rad


4 0
4 years ago
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