All categories

3 years ago

Hi, prove that (AXB).(CXD)+(BXC).(AXD)+(CXA).(BXD)=0

Mathematics

1 answer:

slava [35]3 years ago

5 0

No.i will not prove that.

You might be interested in

There are 60 seats on a train. 6 of the seats are empty. What percentage of the seats on the train are empty?

sergij07 [2.7K]

Answer:

10%

Step-by-step explanation:

Set up a proportion: $\frac{6}{60} = \frac{x}{100}$
Cross multiply, then divide: 6 × 100 = 600, 600 ÷ 60 = 10
10/100 = 10%

I hope this helps!

6 0

3 years ago

If n/5=45/75.find the value of n.

Stells [14]

Start with

$\dfrac{n}{5}=\dfrac{45}{75}$

Multiply both sides by 5:

$n = \dfrac{45\cdot 5}{75} = \dfrac{45}{15} = 3$

3 0

3 years ago

Read 2 more answers

Using right triangle below find the sine of angle B

Reil [10]

Answer:

1/2

Step-by-step explanation:

sin = opposite/hypotenuse, so

sin(B) = $\frac{\sqrt{7} }{2\sqrt{7} }$ = 1/2

7 0

4 years ago

Read 2 more answers

One number is six more than a second number. four times the first is 10 less than 6 times the second. Find the numbers.

zavuch27 [327]

$\sf{\bold{\blue{\underline{\underline{Given}}}}}$

One number is six more than a second number.
four times the first is 10 less than 6 times the second.⠀⠀⠀⠀

$\sf{\bold{\red{\underline{\underline{To\:Find}}}}}$

Find the two numbers.⠀

$\sf{\bold{\purple{\underline{\underline{Solution}}}}}$

⠀⠀⠀⠀

In questions given,One number is six more than a second number.

if second number is a

first number is a+6.

and,

four times the first is 10 less than 6 times the second.

So,

4×(a+6)=6a-10

we have to solve this.

$\bold{4\times (a+6)=6a-10 }$

$\bold{4a+24=6a-10 }$

$\bold{6a-4a=24+10 }$

$\bold{2a=34 }$

$\bold{ a=\dfrac{34}{2} }$

$\bold{ a=17 }$

we,get our second number =a=17.

So,

first number =a+6=17+6=23

5 0

3 years ago

Suppose the interval [negative 3−3,negative 1−1] is partitioned into nequals=44 subintervals. What is the subinterval length

Kobotan [32]

Answer: Δx = 0.5

Step-by-step explanation:

We have the interval:

[−3, −1]

and we partition it into 4 equal intervals.

first, the range of our interval is equal to the difference between the extremes, this is:

-1 - (-3) = -1 + 3 = 2

Then, if we divide it into 4, we have 4 segments with a range of:

2/4 = 0.5

Then the subinterval delta is 0.5, and the 4 intervals are:

[−3, -2.5], [−2.5, −2], [−2, −1.5], [−1.5, −1]

6 0

3 years ago