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Bogdan [553]
3 years ago
11

Which function is a quadratic function?

Mathematics
2 answers:
stira [4]3 years ago
7 0
D) y=-2x^2-x is quadratic, when graphed it will create a parabola.
Vladimir [108]3 years ago
4 0

Answer:

y = -2x² - x is quadratic function.

Step-by-step explanation:

Given : Function .

To find : Which function is a quadratic function.

Solution : We have given that functions .

Quadratic function: A quadratic function is one of the form f(x) = ax² + bx + c, where a, b, and c are numbers.

We can see from given options

y = -2x² - x in form of f(x) = ax² + bx + c,

Where, a = -2 , b = -1 c = 0

Therefore,  y = -2x² - x is quadratic function.

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3. A circular running track is 14 mile long. Elena runs on this track, completing each lap in 120of an hour. What is Elena’s run
larisa [96]

Answer:

2.22m/s

Step-by-step explanation:

Distance = Velocity/Time

533.33m = V/4minutes

V = 533.33/240 seconds

V = 2.22m/s

6 0
3 years ago
A scale drawn on a map represents 1 inch to be equal to 28 miles. If two cities are 2 3/4 in. apart on the map, what is the dist
lesya [120]
The answer is B.
28x2 then the remaining 3/4 equals to 21 miles so add first to inches then the remaining. 28+28+21=77
7 0
3 years ago
Read 2 more answers
Desde una altura de 3m un chico patea verticalmente hacia arriba una pelota con una velocidad de 18m/s cual es su posicion 1 seg
Korolek [52]

Answer: la altura es 13.1 m

Step-by-step explanation:

El movimiento descripto es de tipo rectilineo uniformemente variado, más precisamente tiro vertical.

Para calcular la posición al cabo de 1 seg utilizaremos la ecuacionecuación del movimiento descrita como:

y = v0.t - 1/2 g t^2

Donde y es la altura para cualquier momento

v0 es la velocidad inicial 18 m/s

g la aceleración de la gravedad 9.81 m/s2

y t el tiempo medido en segundos

Entonces para calcular la altura después de un segundo:

y = 18 m/s x 1 seg - 1/2 9.81 m/s2 (1 seg)^2 = 18 m - 4.9 m = 13.1 m

7 0
4 years ago
Find the radius of a circle whose circumference is 56.52 cm. Round your answer to the nearest whole number
LekaFEV [45]

Answer:

9 cm

Step-by-step explanation:

hope it helps<3

8 0
3 years ago
HELP EASY 10 POINTS!
siniylev [52]

Commutative property would be the answer.

8 0
4 years ago
Read 2 more answers
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