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AfilCa [17]
3 years ago
12

Which statement is not true? X squared equals 100 if and only if X equals 10 orX equals -10. If X squared equal 100 then X equal

s 10
Mathematics
1 answer:
mamaluj [8]3 years ago
7 0

Answer:

the second statement is not true

Step-by-step explanation:

If x squared equals 100, it doesn't mean necessarily that x is positive ten, since you can get 100 also by squaring the value (-10):

(-10)(-10)^{2} = (-10) x (-10) = 100

The second statement is ignoring the possibility of x being a negative ten which also gives 100 as answered when squared.

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Desde la cuspide de un faro de 50m de altura sobre el nivel del mar se observa que el angulo depersion a un bote velero es de 20
poizon [28]

Answer:

137.4 meters

Step-by-step explanation:

In this case, they give us the height of the lighthouse that corresponds to 50 meters and the depression angle is 20 °, in this case we can apply the tangent trigonometric function, which relates the opposite side to the adjacent side.

tan a ° = opposite / adjacent

the horizontal that is formed would be the adjacent side, therefore if we solve we are left with:

horizontal distance = opposite / tan to °

replacing, we are left with:

hd = 50 / tan 20 °

hd = 50 / 0.3639

hd = 137.4

the horizontal distance is equal to 137.4 meters

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3 years ago
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This figure is made up of a triangle and a semicircle. What is the area of the figure? Use 3.14 for π . Enter your answer, as a
lana66690 [7]
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3 years ago
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I mean if it's there dream then why stop it? Its there life and we can't really stop that cause regardless what you say or do they're gonna find a way to do it. So I would say yes.

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