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Alexxandr [17]
3 years ago
14

Can someone help me with this

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
5 0
Your answer is A

24.6
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50 POINTS AND BRIANLIEST:Which of the following expressions is in its simplest form?
Finger [1]

Answer:

A is in simplest form

Step-by-step explanation:

A: You cannot simplify a anymore

B: Can simplify +5 and +23

C: Can simplify +xy and +12xy

D: Can simplify -ab2 and -2ab2

Hope it Helps!

7 0
3 years ago
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Write the vector u as a sum of two orthogonal vectors, one of which is the vector projection of u onto v, proj,u
11Alexandr11 [23.1K]

Answer:

Take b = \frac{-17}{25}(7,1) as the projection of u onto v and w \frac{1}{25}(-31,217) as the vector such that b+w =u

Step-by-step explanation:

The formula of projection  of a vector u onto a vector v is given by

\frac{u\cdot v}{v\cdot v}v, where cdot is the dot product between vectors.

First, let b ve the projection of u onto v. Then

b = \frac{u\cdot v}{v\cdot v}v= \frac{-6\cdot 7+8\cdot 1}{7\cdot 7+1\cdot 1}(7,1) = \frac{-34}{50}(7,1) = \frac{-17}{25}(7,1)

We want a vector w, that is orthogonal to b and that b+w = u. From this equation we have that w = u-b = (-6,8)-\frac{-17}{25}(7,1)= \frac{1}{25}(-31,217)[/tex]

By construction, we have that w+b=u. We need to check that they are orthogonal. To do so, the dot product between w and b must be zero. Recall that if we have vectors a,b  that are orthogonal then for every non-zero escalar r,k the vector ra and kb are also orthogonal. Then, we can check if w and b are orthogonal by checking if the vectors (7,1) and (-31, 217) are orthogonal.

We have that (7,1)\cdot(-31,217) = 7\cdot -31 + 217 \cdot 1 = -217+217 =0. Then this vectors are orthogonal, and thus, w and b are orthogonal.

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2 years ago
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Answer: you can

Step-by-step explanation:

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OlgaM077 [116]

c and a

by the way, thats easy. NO OFFENCE XD

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0.7 / 100 = 0.007 or 0.007 x 100 = 0.7 hope this helps

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2 years ago
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