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Natalka [10]
3 years ago
8

Natasha drives at a speed of 80 miles per hour. How long will it take to drive 440 miles?

Mathematics
1 answer:
Alex777 [14]3 years ago
6 0

Answer:

5.5 hours

Step-by-step explanation:

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Show work ASAP!! Please
zepelin [54]

9514 1404 393

Answer:

  a) x = -1, x = 4

  b) y = x^2 -3x -4

Step-by-step explanation:

a) We observe the x-intercepts are x = -1 and x = 4. These are the solutions to y = 0, which is usually what we want in cases like this.

The solutions are x=-1 and x=4.

__

b) We know two of the factors are (x +1) and (x -4). There may be an additional constant factor for vertical scaling. One point we can check is the y-intercept.

  y = a(x +1)(x -4)

For x=0, this is ...

  y = a(1)(-4) = -4a

The y-intercept is y = -4, so we have a=1.

The factored equation is ...

  y = (x +1)(x -4)

Multiplying this out gives the equation in standard form:

  y = x^2 -3x -4

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<em>Additional comment</em>

Your teacher may want the standard form equation to be ...

  x^2 -3x -4 = 0

This is the equation of two specific points: x=-1 and x=4. It is not the equation of the graph.

8 0
3 years ago
Please help i will mark brainliest
SCORPION-xisa [38]

Answer:

Reflections and rotations

Step-by-step explanation:

Reflections and rotations preserves the distance and angle measurements.

8 0
2 years ago
Which point is not included in the solution set for the inequality? (–1, 3) (0, 4) (1, 5) (2, 4)
lorasvet [3.4K]

The point that is not included in the solution set for the inequality in the graph is (-1, 3).

<h3>How to explain the graph?</h3>

In the information given, (h, k) is the vertex point. In the graph, the vertex point will be (1, 2). The equation will be:

y = a(x + 1)² + 2

By the point of the graph(0, 3) the value of a will be:

3 = a(0 - 1)² + 2

3 = a + 2

a = 3 - 2

a = 1

The equation this becomes:

y = 1(x - 1)² + 2.

y = x² - 2x + 1 + 2

y = x² - 2x + 3

Therefore, the point that is not included in the solution set for the inequality is (-1, 3).

Learn more about graph on:

brainly.com/question/19040584

#SPJ1

3 0
1 year ago
HELP ASAP PLEASE
Liula [17]

distance : 15 units

coordinates :  (7,0) and (-8, 45)

slope:

\sf \rightarrow  \dfrac{y_2-y_1}{x_2-x_1}

\sf \rightarrow  \dfrac{45-0}{-8-7}

\sf \rightarrow  -3

equation:

\hookrightarrow \sf y - 0 = -3(x-7)

\hookrightarrow \sf y = -3x+21

the y-intercept of this function:

\hookrightarrow \sf y = -3(0)+21

\hookrightarrow \sf y =21

distance between both y-intercept :

  • 21 - 6
  • 15
3 0
2 years ago
Simplify. Multiply and remove all perfect squares from inside the square roots.
Arisa [49]

Answer:

120x√(7x)

Step-by-step explanation:

4 0
3 years ago
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