All categories

3 years ago

Planes A and B intersect.

Mathematics

2 answers:

olasank [31]3 years ago

5 0

The correct answer is:

line ED

Explanation:

The intersection of two planes is a line.

Looking at this diagram, line ED is where planes A and B intersect; this means line ED is our answer.

NARA [144]3 years ago

5 0

Planes A and B intersect.

Which describes the intersection of planes A and B?

Line CD

-Line ED

Point C

Point D

You might be interested in

On a recent survey, 45% of those surveyed indicated that they preferred basketball to football.

lana [24]

A. 2000 people were surveyed
B. 1100 people preferred football

7 0

3 years ago

Find each rate in 40 meters in 16 sec

lara31 [8.8K]

Rate = 40/16 = 10/4 = 5/2 = 2.5 meters/second Unit rate = ratio where denominator is 1 = 2.5/1 meters/second

4 0

3 years ago

Devin has a furniture store. He sold a shoe rack recently for 3450. It cost him just 2300 to make the rack

True [87]

Answer:

50%

Step-by-step explanation:

3450 - 2300 = 1150

1150/ 2300 × 100 = 50

5 0

2 years ago

Forces of 9 lbs and 13 lbs act at a 38º angle to each other. Find the magnitude of the resultant force and the angle that the re

fiasKO [112]

Answer: $R=20.84\ lb\quad 22.57^{\circ},15.43^{\circ}$

Step-by-step explanation:

Given

Two forces of 9 and 13 lbs acts $38^{\circ}$ angle to each other

The resultant of the two forces is given by

$\Rightarrow R=\sqrt{a^2+b^2+2ab\cos \theta}$

Insert the values

$\Rightarrow R=\sqrt{9^2+13^2+2(9)(13)\cos 38^{\circ}}\\\Rightarrow R=\sqrt{81+169+184.394}\\\Rightarrow R=\sqrt{434.394}\\\Rightarrow R=20.84\ lb$

Resultant makes an angle of

$\Rightarrow \alpha=\tan^{-1}\left( \dfrac{b\sin \theta}{a+b\cos \theta}\right)\\\\\text{Considering 9 lb force along the x-axis}\\\\\Rightarrow \alpha =\tan^{-1}\left( \dfrac{13\sin 38^{\circ}}{9+13\cos 38^{\circ}}\right)\\\\\Rightarrow \alpha =\tan^{-1}(\dfrac{8}{19.244})\\\\\Rightarrow \alpha=22.57^{\circ}$

So, the resultant makes an angle of $22.57^{\circ}$ with 9 lb force

Angle made with 13 lb force is $38^{\circ}-22.57^{\circ}=15.43^{\circ}$

7 0

3 years ago

Read 2 more answers

Each side length of a triangle is 4 cm. What type of triangle is it?

KIM [24]

Equilateral, because the sides are equal

3 0

3 years ago