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sesenic [268]
3 years ago
7

Please try this, it's a basic proof that I don't know how to do. Thanks!

Mathematics
1 answer:
avanturin [10]3 years ago
7 0
A cube, is made off 6 squarial faces, so all faces on that cube, are squares, the front, back, left, right, top and bottom.

a square has all equal sides, and also all right angles, so all angles in a square are 90°.  Let's say the sides are "x" long.

now, if we run a plane on that cube diagonally, check the picture below, the diagonal side at the bottom, by usin the 45-45-90 rule as you see it there, will be x√2.

let's keep in mind that, "x" is opposite side of that angle θ, and then x√2 will be the adjacent side of it.

and we can use those two to get the tangent and then the inverse tangent to get the value, as you see it in the picture.

if you need the angle in radians, run the inverse tangent again, just make sure your calculator is in radians mode.

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A town council has 13 ​members, 7 Democrats and 6 Republicans.
bezimeni [28]

Answer:

Membership selection a town council has members Democrats and Republicans if the president and vice president are selected at random what is the probability that they are both Democrats

There is a 26.9% chance, if the president and vice-president are selected at random, that they are both Democrats. There is a 12.2% chance, if a 3-person committee is selected at random, that Republicans make up the majority.

Step-by-step explanation:

7 0
3 years ago
1. Is the square root of 2 between 1.3 and 1.4? How do you know?
VikaD [51]

Answer:

Step-by-step explanation:

1st . 1.3^2= 1.69

1.4^2= 1.96

It's not bettween 1.3 & 1.4

2. 1.4^2=1.96

1.5^2= 2.25

it's betteen 1.4 & 1.5

3 . 1.4 & 1.5 so it's eqaul 1.4

3 0
3 years ago
Read 2 more answers
A musician purchases a pair of cube-shaped speakers that are 9 inches across. If the face of the speaker takes up of the total v
netineya [11]

Answer:

Assuming "the speaker takes up 1/6 of the internal volume"

volume is 9³ in³

you want the remaining volume, which is 5/6 of the total

(5/6)9³ = 607.5 in³

double that if you want the remaining volume for BOTH speakers....

3 0
3 years ago
Find the slope of the line that passes through<br> each pair of points.<br> (-3, -2), B (5, 4)
viva [34]

Answer:

0.8

Step-by-step explanation:

8 0
2 years ago
Can someone please help me with this question
Vera_Pavlovna [14]

Answer:

the graph on the bottom left

Step-by-step explanation:

outliers are points that are away from the cluster of points in the bottom left graph all of the points are grouped up therefor the bottom left graph is the correct answer

7 0
3 years ago
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