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3 years ago

14

The Blue Plane travels at a constant speed of 120 miles per hour. If it travels for 2 1/2 hours to get to Pennsylvania how far d

id it go?

2 answers:

Oduvanchick [21]3 years ago

7 0

Answer:

The answer is 300 miles

Step-by-step explanation:

120x2=240

120x .5= 60

240+60=300

Masteriza [31]3 years ago

5 0

Monas no se JR ponervqtw637837465738293646647384959757595 nvdaJo9’42º deañuf9eq’

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Which of the following is a solution to 2cos x + 1 = 0?

nlexa [21]

The answer is b
2cos x + 1 = 0
2 cos x = -1
cos x = -1/2
x = cos^1(-1/2)
(cos inverse (-1/2))
x = 120°

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3 years ago

Quadratics need help making parabola

timama [110]

Answer:

The equation of the parabola is $y = \frac{1}{3}\cdot x^{2}-\frac{4}{3}\cdot x -4$ , whose real vertex is $(x,y) = (2, -5.333)$ , not $(x,y) = (2, -5)$ .

Step-by-step explanation:

A parabola is a second order polynomial. By Fundamental Theorem of Algebra we know that a second order polynomial can be formed when three distinct points are known. From statement we have the following information:

$(x_{1}, y_{1}) = (-2, 0)$ , $(x_{2}, y_{2}) = (6, 0)$ , $(x_{3}, y_{3}) = (0, -4)$

From definition of second order polynomial and the three points described above, we have the following system of linear equations:

$4\cdot a -2\cdot b + c = 0$ (1)

$36\cdot a + 6\cdot b + c = 0$ (2)

$c = -4$ (3)

The solution of this system is: $a = \frac{1}{3}$ , $b = - \frac{4}{3}$ , $c = -4$ . Hence, the equation of the parabola is $y = \frac{1}{3}\cdot x^{2}-\frac{4}{3}\cdot x -4$ . Lastly, we must check if $(x,y) = (2, -5)$ belongs to the function. If we know that $x = 2$ , then the value of $y$ is:

$y = \frac{1}{3}\cdot (2)^{2}-\frac{4}{3}\cdot (2) - 4$

$y = -5.333$

$(x,y) = (2, -5)$ does not belong to the function, the real point is $(x,y) = (2, -5.333)$ .

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3 years ago

Find the x- and y-intercepts of the graph of -6 + y = 20. State your answers as

Jobisdone [24]

Answer:

y=26 (no x ) the y int is 26 I believe

Step-by-step explanation:

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3 years ago

Which ordered pair is on the inverse of f(x)?<br><br> (–4, –2)<br><br> (–2, –2)<br><br> (–1, –2)

tekilochka [14]

Answer:

5,9

Step-by-step explanation:

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3 years ago

Read 2 more answers

A 27 oz bottle of a new soda costs $2.25. What is the unit rate, rounded to the nearest tenth of a cent?

Illusion [34]

Maybe its 2 dollars
you could try that or someone else can do it

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