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yulyashka [42]
3 years ago
13

Find the solutions to the equation below. Check all that apply. 25x2 - 100 = 0

Mathematics
1 answer:
tiny-mole [99]3 years ago
6 0

Answer:

x = -2, 2

Step-by-step explanation:

this one is easy since we can just use squres to factor

(5x -10) (5x + 10)

we want one positive one and one negative one since there is no middle term.

so basically we finde the solution by setting each part of the binomial = to zero

like this

5x - 10 = 0

+ 10 +10

5x = 10

divide by 5 on both sides of the equal sign

x = 2

and

5x + 10 = 0

-10 -10

5x = -10

divide by 5 on both sides of the equal sign

x = -2

therefore the solutions (AKA the zeroes) are x= -2, 2

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Assume the mean life of an iPhone is 5 years (60 months)and a standard deviation of 8 months If the age in years at which an iPh
melamori03 [73]

Answer:

Answer:

safe speed for the larger radius track u= √2 v

Explanation:

The sum of the forces on either side is the same, the only difference is the radius of curvature and speed.

Also given that r_1= smaller radius

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let u be the speed of larger radius curve

now, \sum F = \frac{mv^2}{r_1} =\frac{mu^2}{r_2}∑F=

r

1

mv

2

=

r

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mu

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................ii

form i and ii we can write

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2

=

2

1

u

2

⇒u= √2 v

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