Please I need help with that

Mathematics

1 answer:

nalin [4]3 years ago

4 0

The plane is P, the point of intersection is X, and the hash marks all indicate X is the midpoint of the line segments that go through x. The appropriate choice is the second one.

_____

The first choice makes no sense, as there are no right angles shown.

The third choice makes no sense, as the plane is P, not X.

The fourth choice is cut off, but is obviously incorrect, too.

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A car is traveling at 20.0 m/s, and the driver sees a traffic light. turn red. After 0.530 s (the reaction time), the driver app

slava [35]

Before the driver applies the brakes ( with the reaction time ):
d 1 = v0 · t = 20 m/s · 0.53 s = 10.6 m
After that:
v = v0 - a · t1
0 = 20 m/s - 7 · t1
7 · t1 = 20
t1 = 2.86 s
d 2 = v 0 · t1 - a · t1² / 2
d 2 = 20 m/s · 2.86 s - 7 m/s² · (2.86 s)²/2 = 57.2 m - 28.6 m = 28.6 m
d = d 1 + d 2 = 10.6 m + 28.6 m = 39.2 m
Answer: the stopping distance of a car is 39.2 m.

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3 years ago

Classify the following triangle as acute

BaLLatris [955]

It is an acute triangle since all the sides are less than 90 degrees (it's also equilateral)

8 0

3 years ago

Which of the following is the difference of two squares?

Blizzard [7]

Answer: C

Step-by-step explanation:

$25a^{2}=(5a)^{2}$ and $36b^{6}=(6b^{3})^{2}$