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3 years ago

(9Q) Solve the log.

Mathematics

1 answer:

Arada [10]3 years ago

3 0

Answer:

Step-by-step explanation:

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~f r e e ~ p o i n t s ~ i f ~ y o u ~ a n s w e r ~ t h i s ~ I m P o S s I b L e ~ q u e s t i o n~

Nutka1998 [239]

Answer:

21..........

Step-by-step explanation:

6 0

2 years ago

Show that if u+v and u-v are orthognal, then the vectors u and v must have the same length.

pashok25 [27]

Answer with Step-by-step explanation:

We are given that

u+ v and u-v are orthogonal

We have to prove that u and v must have the same length.

When two vector a and b are orthogonal then

$a\cdot b=0$

By using the property

$(u+v)\cdot (u-v)=0$

We know that

$(a+b)\cdot (a-b)=\mid a\mid^2-\mid b\mid^2$

$\mid u\mid ^2-\mid v\mid^2=0$

$\mid u\mid^2=\mid v\mid^2$

Magnitude is always positive

When power of base on both sides are equal then base will be equal

Therefore,

$\mid u\mid=\mid v\mid$

Hence, the length of vectors u and v must have the same length.

5 0

3 years ago

If EF = 2x+13, FG = 20, and EG = 71 what's the value of x

klemol [59]

Answer:

Step-by-step explanation:

|<----------------- 71 ----------------------->|

E-----------------------F---------------------G

2x + 13 20

find: x

EF + FG = DG

2x + 13 + 20 = 71

2x = 71 - 20 - 13

x = 38 / 2

x = 19

6 0

2 years ago

I need help ASAP!!!!!

Natali5045456 [20]

Answer:

I think it’s 27.

Step-by-step explanation:

Do 100-46 to get 54, then divided 54 by 2 to get 27.

3 0

2 years ago

Who was targeted by the crusaders wh ile heading to constantinople

Likurg_2 [28]

Answer:

I believe Jerusalem was captured

3 0

3 years ago