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sdas [7]
3 years ago
5

Given vectors u=7i + 3j and v=-4i + 3j, find 5u-4v in terms of unit vectors i and j

Mathematics
2 answers:
Nastasia [14]3 years ago
7 0

Answer:

THE ANSWER IS A

Step-by-step explanation:

il63 [147K]3 years ago
5 0

Answer:

5u - 4v = 51i + 3j

Step-by-step explanation:

The given vectors are u=7i + 3j and v=-4i + 3j, find 5u-4v in terms of unit vectors i and j.

We substitute the vectors to get:

5u - 4v = 5(7i + 3j) - 4( - 4i + 3j)

We perform the scalar multiplication to get:

5u - 4v = 35i + 15j  + 16i  - 12j

Group the components;

5u - 4v = 35i  + 16i   + 15j- 12j

We simplify to get:

5u - 4v = 51i   + 3j

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Solve the following equation. Round to the nearest hundredth.
mrs_skeptik [129]
F hope that helped have anger he try’s
4 0
2 years ago
What does n = in 10=6+n/2
Pani-rosa [81]

Answer:

n = 8

Step-by-step explanation:

10=6+n/2

Switch sides

6 + n/2 = 10

Subtract 6 from both sides

6 + n/2 -6 = 10-6

Simplify

n/2 = 4

Multiply both sides by 2

2n/2 = 4 times 2

n = 8

Hope this helps!

8 0
2 years ago
A man divided $9,000 among his wife, son, and daughter. The wife received twice as much as the daughter, and the son received $1
monitta

Answer:

Q1:

Share of the daughter (x):

2x + x + x + $1,000 = $9,000

4x = $8,000

x = $2,000

Share of the wife:

= 2($2,000)

=  $4,000

Share of the son:

= $2,000 + $1,000

= $3,000

Answer: wife, $4,000; son, $3,000; daughter, $2,000

Q2:

= 1/2x + $1,000

Answer: 1/2x + $1,000: expression for share of the son

Proof (the wife shares $4,000):

Share of wife (x):

x + 1/2x + 1/2x + $1,000 = $9,000

2x = $8,000

x = $4,000

Step-by-step explanation:

hope it helps!

6 0
3 years ago
Can anyone help me with Qs 9-14 pls
lions [1.4K]

Answer:

Step-by-step explanation:

angle 2 and angle 3 are linear pair

angle 1 and angle 7 are alternate exterior angle

angle 4 + angle 7=a80 degree

124 + angle 7=180

angle 7=180-124

angle 7=56 degree

angle 1 is supplementary to angle 2 ,angle 4, angle 6, angle 8 .In supplementary angle sum of two angle is always 180 degree.

angle 4 and angle 5 are supplementary angles because their sum is equal to 180 degree.

angle 4 + angle 5(being co interior angle)

3x+17+x+23=180

4x+40=180

4x=19=180-40

x=140/4

x=35

3 0
3 years ago
I'll give brainlest, if you be right! : )
adell [148]
I think it would be around 17 in
5 0
2 years ago
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