1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
OleMash [197]
4 years ago
7

Find u * v, if u= 12j and v = i + 5j a (1,60) b (0,60) c -60 d 60

Mathematics
2 answers:
Paraphin [41]4 years ago
7 0
The correct answer for this problem would have to be D hope this helps:)
lidiya [134]4 years ago
3 0

Answer:  The correct option is (d) 60.

Step-by-step explanation:  We are given to find u * v, if the vectors u and v are defined as follows :

u=12j,~~~v=i+5j.

We know that

i.i=1,~~j.j=1,~~k.k=1,~~i.j=j.i=j.k=k.j=i.k=k.i=0.

So, we have

u*v\\\\=(12j)*(i+5j)\\\\=12j.i+12j.5j\\\\=12\times 0+60\times 1\\\\=0+60\\\\=60.

Thus, the value of u * v is 60.

Option (d) is CORRECT.

You might be interested in
A number cube was rolled as part of an experiment. The results are displayed in the table below. Number 1 2 3 4 5 6 Frequency 4
Romashka-Z-Leto [24]

Answer:

You have to find the probability of all the numbers out of 6

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A hockey season ticket holder pays $88.56 for her tickets plus $5.00 for a program each game. A second person pays $19.76 for a
Aleksandr-060686 [28]

Answer: x = 6

Step-by-step explanation: If you take 88.56 + 5x = 19.76x, an equation, you should first rearrange the variables to the left side of the equation: 5x - 19.76x = -88.56.

Next, you should combine your like terms. So, -14.76 = -88.56.

Then, divide both sides of the equation by the coefficient of variable. So, x = -88.56 / -14.76./

Lastly, calculate. Determine the sign for multiplication or division, so x = 88.56 / 14.76. Multiply both the numerator and denominator with the same integer. So, x = 8856 / 1476. Cross out the common factor, then you get your answer of x = 6

5 0
2 years ago
A standard pair of six-sided dice is rolled. what is the probability of rolling a sum greater than 66? express your answer as a
777dan777 [17]

Answer:

a

Step-by-step explanation:

6 0
4 years ago
BÀI 5
lawyer [7]

Answer:

ano hindi po ma hintindihan po hindi paano po yan masasagutan

7 0
3 years ago
Can someone help me with 9 and 10? I’m really lost— thank you :)
puteri [66]
For 9, do 0.5*6*9.2*5 to get the total area of the visual triangles, add that to 0.5*6*4.1*5 to get the area of the pentagon and you should get 199.5 cm^2for 10, do 0.5*6.9*8*12 to get the total area of the figure and you should get 331.2 cm^2
8 0
4 years ago
Other questions:
  • 7 (2x + 2y -2) = <br> Concerns for this I know I’m dumb
    6·2 answers
  • Adam paid $76.25 for renting a bicycle for 5 hours. what was the rate per hour for renting the bicycle? (input only numeric valu
    15·2 answers
  • Is a tree decaying 10% each six weeks a quadratic function?
    9·1 answer
  • The steps below show the incomplete solution to find the value of x for the equation
    7·2 answers
  • Let T : V → W be a linear transformation from vector space V into vector space W.
    11·1 answer
  • Rashid has just purchased a health insurance policy that covers the cost of his preventive care. Which three of these expenses w
    5·1 answer
  • Cathy has $100 saved to spend on clothes. She wants to purchase a winter jacket for $40 and some sweaters that cost $20 each. Ho
    7·1 answer
  • What is 1 and 1/2 - 2/3????
    5·1 answer
  • Please help, brainliest for correct answer
    6·2 answers
  • A rectangular field is 95 meters wide and 140 meters long. A coach
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!