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Licemer1 [7]
3 years ago
12

find the vertex, the equation and axis of symmetry, and the y-intercept of the graph of y=-3x^2-13x+3

Mathematics
1 answer:
stepladder [879]3 years ago
6 0

Answer:

Vertex: (13/6,-133/12)

Axis of symmetry: x=13/6

y-intercept: y=3

Step-by-step explanation:

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The table shows how the number of cars, c, depends on the number people, t. How would you write this as an equation?
Nataly [62]

Answer:

t = 3c - 5

Step-by-step explanation:

The relation between c and t is linear as the increase of the value of t is uniform for each unit increase in the value of c.

Now, any two points on the graph of the t = f(c) equation are sufficient to determine the equation.

Let the points are (2,1) and (3,4).

So, using two points formula of straight line we get the equation is  

\frac{t - 4}{4 - 1} = \frac{c - 3}{3 - 2}

⇒ t - 4 = 3(c - 3)

⇒ t - 4 = 3c - 9

⇒ t = 3c - 5 (Answer)

6 0
3 years ago
Which on is it? need asap Thank you !!!
skad [1K]

Irrational number has unsolvable root overs.

Last two are now our options

\\ \bull\tt\dashrightarrow \sqrt{25}=5

Hence its not irrotational.

Hence

Option C is irrational.

6 0
3 years ago
What is the unit rate of 162 heartbeats in 60 seconds?
svetoff [14.1K]
162/60 = 2.7 heartbeats per second
4 0
3 years ago
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What is the equation in point slope form of the line that passes through the point (2, 6) and has a slope of 5?
NNADVOKAT [17]
The equation in point slope is: y-y1=m(x-x1) y-6=5(x-2)
5 0
3 years ago
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LOTS OF POINTS!!! HELP WITH 7 ANd EXPLAIN!!
saveliy_v [14]

Answer:

w=4

Step-by-step explanation:

The surface area of a prism is SA= 2lw+2lh+2hw

We are trying to find out the width if the SA is 240 square inches, length is 12 inches, and the height is 5 inches. Let's plug these numbers into the equation.

240=(2*12*w)+(2*12*5)+(2*5*w)

          24w+120+10w

240= 34w+120

-120           -120

120= 34w

120/34 = 34w/34

w is approximately equal to 3.5 which can be rounded to 4

w=4

Hope this is right! It was confusing at first but I understood it!

3 0
3 years ago
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