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nadya68 [22]
2 years ago
14

How many roots does the relation y = 4x² - 20x + 25 have? (2 marks)

Mathematics
1 answer:
Dovator [93]2 years ago
7 0

Answer:

it has one root x=2/5

Step-by-step explanation:

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A drone is monitoring the atmospheric conditions above a farm field.
Viefleur [7K]

Answer:

y=5 \ \ \ x x_o + 1.9s

Step-by-step explanation:

This situation can be considered as a piecewise function. First, you take xo as the time in which the drone goes upward. Before this time the height of the drone is constant with a value of 5 m. Next, you take into account that during 1.9 s after xo the drone accelerates. Finally, the drone flies again with a constant height of 5.9m. Hence, this function has three parts:

For the first part you have:

y = 5       for x <  xo

For the second part you first calculate vertical speed (which means the slope of the linear function) by using the following kinematic equation:

y=vx\\\\v=\frac{y-y_o}{x}=\frac{5.9m-5.0m}{1.9s}=0.47m/s

Then you have:

y = 0.47x    for xo < x < xo + 1.9s

And for the third part:

y = 5.9    for x > xo  + 1.9s

Summarizing you obtain:

y=5 \ \ \ x x_o + 1.9s

4 0
3 years ago
A line passes through the points (1, 2) and (3, 1). What is the slope of the line?
erastovalidia [21]
M = 1 - 2 / 3 - 1
m = - 1 / 2
8 0
3 years ago
NEEP HELP ASAP!!!!!!!!!!!!!!!!!!!!!
stealth61 [152]

Step-by-step explanation:

sin 25 = 15 / xz

xz = 15/ sin 25

xz = 35.49

tan w = 35.49 / 22

w =58.15

8 0
2 years ago
-84 &gt; -6(2 - 3b)<br><br> Please show work!!
mart [117]

-84 > -6(2 - 3b)

<em><u>Distributive property.</u></em>

-84 > -12 + 18b

<em><u>Add 12 to both sides.</u></em>

-72 > 18b

<em><u>Divide both sides by 18.</u></em>

-4 > b

The value of b is less than -4

3 0
3 years ago
What are the intercepts of y = 4x − 2?
maw [93]

Answer: y = −2

Step-by-step explanation:

  • 0 = −4x − 2
  • x = −1/2
  • To find the y-intercept, substitute in 0 for x and solve for y. Y = − 4 * 0 −2
  • Which then gives you y = - 2

* Hopefully this helps:) Mark me the brainliest:)

4 0
3 years ago
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