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bekas [8.4K]
3 years ago
8

There are 2 rows of chairs with c chairs in each row. Choose the expression that shows the number of chairs in total.

Mathematics
1 answer:
Bumek [7]3 years ago
6 0

Answer:

? whatt

Step-by-step explanation:

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Graph ​ y=−5/6x−4 ​.<br><br> Use the line tool and select two points on the line.
postnew [5]

Given equation is y=-\frac{5}{6} x-4

If we substitute x = 0, then, y = - 4.

So, (0, -4) is a point on the line.

If we substitute x = - 6, then y = 5 - 4 = 1.

So, (-6, 1) is another point on the line.

Joining (0, -4) and (-6, 1), we get the graph of the line.

5 0
3 years ago
Just part c please thanks
Dovator [93]
Unfortunately the portion of the graph shown does not show the locations of points A and B, nor does it show sufficient parts of the curve.

Fortunately, to do part C, it is not necessary to use the graph of the function, nor the locations of points A & B, since we know that t=-1 at A.

The solution is as follows:
We know that the tangent line has the equation
l : 2x -5y -9 = 0 ...................(1)
and that the parametric equation is
x = t^3 -8t;  y = t^2 ..............(2)

We can obtain the intersections of the tangent line (1) with the original curve (2) by substituting (2) in (1), giving
f(t) = 2*(t^3-8*t) -5*(t^2)-9 = 0
or on simplification,
f(t) = 2t^3 -5t^2 -16t -9 = 0 ....................(3) parametric equation of intersection points
Solution of which gives t=9/2 or t=-1.

Since t=-1 is the given tangent point, we conclude that t=9/2 is point B.

Translating into rectangular coordinates for t=9/2, we get
x=t^3-8t=(9/2)^3-8(9/2)= 441/8 = 55.125
y=t^2=(9/2)^2= 81/4 = 20.25

Therefore the coordinates of B:
t=9/2, or (55.125, 20.25)

Attached is the graphics of f(t), showing that t=-1 is a tangent line, and that the solutions are t=-1, or t=9/2.

8 0
3 years ago
Jordan and Dajia are both completing homework on Deltamath. Jordan started yesterday and completed three problems and is solving
Sedaia [141]
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3 years ago
Write an inequality for the graph
Liula [17]
Answer is d
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8 0
3 years ago
Read 2 more answers
The factorization of x² + 3x -4 is modeled with algebra
nydimaria [60]
  • y=x²+3x-4
  • y=x²+4x-x-4
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Option C

5 0
2 years ago
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