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2 years ago

Determinants and inverses

Mathematics

1 answer:

skelet666 [1.2K]2 years ago

6 0

Answer:

first qustion the last one .

second qustion the first one .

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A x b = 400<br> a ÷ b = 4<br>how much is b

laila [671]

Answer:

4 x 100 = 400

400 ÷100 = 4

B= 100

Step-by-step explanation:

8 0

2 years ago

Find the shortest distance, d, from the point (5, 0, −6) to the plane x + y + z = 6.

DENIUS [597]

Answer:

$\frac{7}{\sqrt{3}}$

Step-by-step explanation:

The shortest distance d, of a point (a, b, c) from a plane mx + ny + tz = r is given by:

$d = |\frac{(ma + nb + tc - r)}{\sqrt{m^2 + n^2 + t^2}} |$ --------------------(i)

From the question,

the point is (5, 0, -6)

the plane is x + y + z = 6

Therefore,

a = 5

b = 0

c = -6

m = 1

n = 1

t = 1

r = 6

Substitute these values into equation (i) as follows;

$d = |\frac{((1*5) + (1*0) + (1 * (-6)) - 6)}{\sqrt{1^2 + 1^2 + 1^2}} |$

$d = |\frac{((5) + (0) + (-6) - 6)}{\sqrt{1 + 1 + 1}} |$

$d = |\frac{(-7)}{\sqrt{3}} |$

$d = \frac{7}{\sqrt{3}}$

Therefore, the shortest distance from the point to the plane is $d = \frac{7}{\sqrt{3}}$

5 0

3 years ago

A pyramid with a square base has how many faces?

mylen [45]

Answer:

It has 5 Faces. The 4 Side Faces are Triangles. The Base is a Square. It has 5 Vertices (corner points)

Step-by-step explanation:

3 0

3 years ago

Help please

yawa3891 [41]

Answer:

C. 4.6

Step-by-step explanation:

If you subtract 3.0 from 1.4 you get 1.6, which is the can be added to 3.0 to find the missing value.

8 0

2 years ago

If the parallelogram is reflected across the x-axis, what are the coordinates of point B after the reflection? Please hurryyyy‼️

Wittaler [7]

Answer:

(5,-1)

Step-by-step explanation:

when reflecting over the x-axis:

(x,y) → (x,−y)

get coordinates of D: (5,1)

get coordinates of D': (5,-1)

hope this helped!

4 0

2 years ago