Which of the following is an example of perpendicular lines? I'm thinking it's B, but not sure

Mathematics

2 answers:

tensa zangetsu [6.8K]3 years ago

5 0

Answer:

Second figure is an example of perpendicular lines.

Step-by-step explanation:

The perpendicular lines are those that forms $90^{\circ}$ at the base of the vertical line.

The straight lines denotes the $90^{\circ}$ angle

The first figure is not correct both are intersecting tilted lines.

The second figure is correct since they form right angle that is $90^{\circ}$ angle.

The third figure is again tilted lines hence, not correct.

The fourth figure is again tilted lines hence, not correct.

therefore, second figure is correct.

krek1111 [17]3 years ago

4 0

The answer is the first one where the two lines intersect at the same one point. A.

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A radar gun was used to record the speed of a swimmer (in meters per second) during selected times in the first 2 seconds of a r

Natalka [10]

Trapezoidal is involving averageing the heights
the 4 intervals are
[0,4] and [4,7.2] and [7.2,8.6] and [8.6,9]

the area of each trapezoid is (v(t1)+v(t2))/2 times width

for the first interval
the average between 0 and 0.4 is 0.2
the width is 4
4(0.2)=0.8

2nd
average between 0.4 and 1 is 0.7
width is 3.2
3.2 times 0.7=2.24

3rd
average betwen 1.0 and 1.5 is 1.25
width is 1.4
1.4 times 1.25=1.75

4th
average betwen 1.5 and 2 is 1.75
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add them all up
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8 0

3 years ago

(5+w)(w+4) in standard form

dlinn [17]

Answer:

w² +9w +20

Step-by-step explanation:

Multiply it out, collect terms, and write as descending powers of w.

(5+w)(w+4) = 5w +5·4 +w² +w·4

= w² +9w +20

7 0

3 years ago