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Alex17521 [72]
3 years ago
6

Write an expression for the vector difference a⃗ −b⃗ using unit vectors.

Mathematics
1 answer:
wel3 years ago
5 0
A vector A with components a, b, c can be written as (a, b, c) or in terms of unit vectors as ai + bj + ck. The letters i, j, k are the standard symbols for the unit vectors in the x, y and z directions. 

<span>So if A = (3, 4, 5), you can also write A = 3i + 4j + 5k </span>
<span>If B = (1, 1, 1), you can write B = i + j + k </span>
<span>And then A - B is the vector whose components are the differences in each component: A - B = (3 - 1)i + (4 - 1)j + (5 - 1)k = 2i + 3j + 4k </span>

<span>So you need to know what the components of A and B are to answer this.</span>
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Fraction that is less than 5/6 and has a denominator of 8
Evgesh-ka [11]
See 5/6 is obviously more than 1/2 so 4/8 works
also 3/8 or 2/8 or 1/8

if you want all fractions then
5/6=x/8
times 24 both sides
20=3x
divide 3
6 and 2/3=x
basically x/8 such that x<6 and 2/3


examples
6/8
5/8
4/8
3/8
2/8
1/8
I would use the odd ones since the even ones simplify to non-eight denomenators
7 0
3 years ago
??????????????????????
ale4655 [162]

Answer:

Area = 58 \ units^2

Step-by-step explanation:

We can start by finding the third side of the triangle/the side of the square using the Pythagorean Theorem:

a^2+b^2=c^2

In this case the side length of the square would be represented by the variable "c" as it is the hypotenuse:

3^2+7^2=c^2

9+49=c^2

c^2=58

c=\sqrt{58}

Since the area of a square is the side length square then...

Area =( \sqrt{58} )^2

The square root and the squared cancel out giving us...

Area = 58 \ units^2

3 0
2 years ago
Quick I need some help! Simplify to create an equivalent expression. ( photo linked)
Sophie [7]

Answer:

B. 31r − 71 is the answer!

5 0
3 years ago
What is the pattern 1 white bead then three blue beads then 1 white bead
Keith_Richards [23]
1 white bead 3 blue beads 1 white bead 3 blue beads 1 white bead 3 blue beads.... it just keeps going
6 0
3 years ago
Identify the solution to the following inequality: -1/2 (x+3) &gt; x - 3
mrs_skeptik [129]

Answer:

A

Step-by-step explanation:

- \frac{1}{2} (x + 3) > x - 3 ( multiply both sides by 2 to clear the fraction )

- (x + 3) > 2x - 6 ← distribute parenthesis on left side by - 1

- x - 3 > 2x - 6 ( subtract 2x from both sides )

- 3x - 3 > - 6 ( add 3 to both sides )

- 3x > - 3

divide both sides by - 3, reversing the symbol as a result of dividing by a negative quantity

x < 1

8 0
2 years ago
Read 2 more answers
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