2 years ago

How many real roots does the quadratic function f(x)= -5x^2 have?

Mathematics

1 answer:

Naya [18.7K]2 years ago

5 0

1 root I believe this is the correct answer

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-5X^2 + 3X = -3X^2 + 3X - 50 solve for x

zhenek [66]

$-5x^2+3x = -3x^2 +3x -50\\\\\implies 5x^2-3x^2 +3x-3x -50 =0\\\\\implies 2x^2 -50 =0\\\\\implies x^2 -25 = 0\\\\\implies x^2 = 25\\\\\implies x = \pm5\\\\\text{Hence}~ x = 5~ \text{or}~ x = -5$

6 0

2 years ago

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Help me please 5points only sry

AlladinOne [14]

x----chickens

y----ducks

50x+30y=550

44x+36y=532

x=11-3/5y

44x+36y=532

x=11-3/5y

44(11-3/5y)+36y=532

x=11-3/5y

484+48/5y=532 /*5

x=11-3/5y

2420+48y=2660

x=11-3/5y

48y=2660-2420

x=11-3/5y

48y=240 //48

x=11-3/5y

y=5

x=11-3/5*5

y=5

x=8----chicken

y=5-----duck

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3 years ago

What is the value of c in the equation? 15.3= C/2.1

geniusboy [140]

Answer:

c=32.13

Step-by-step explanation:

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2 years ago

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The third mean of a GP of two numbers 27 and 1/27 is 1. Find the number of means.

Artyom0805 [142]

Answer:

The mean is $\sqrt{3}.$

Step-by-step explanation:

3 0

2 years ago

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There are 84 jars of jelly on a shelf at the store. Of these, 21 are grape. What percent of the jars of jelly are grape?

Vladimir79 [104]

Answer:

25%

Step-by-step explanation:

Start by dividing 84 by 4 and you get 21. Then take 100 and divide that number by 4, and you get 25. There is your answer. The 21 jars of grape jelly are equal to 25% of the number 84. Hope this helps!

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2 years ago