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
Semmy [17]
3 years ago
6

Determine the projection of w onto u.

Mathematics
2 answers:
Aliun [14]3 years ago
5 0

Answer:

a

Step-by-step explanation:

irina [24]3 years ago
4 0

Answer:

A.6.2i-4.2 j

Step-by-step explanation:

We are given that

u=9i-6j

v=-3i-2j

w=19i+15j

We have to find the projection of w on to u.

The project of vector a on b

=\frac{a\cdot b}{\mid b\mid^2}b

w.u=(19i+15j)\cdot (9i-6j)=171-90=81

\mid u\mid=\sqrt{x^2+y^2}=\sqrt{9^2+(-6)^2}=\sqrt{117}

Using the formula

The projection of w on to u

=\frac{u\cdot w}{\mid u\mid^2}(u)=\frac{81}{117}(9i-6j)

The projection of w on to u=6.2i-4.2j

Hence, option A is true.

You might be interested in
The expression 2( 21x + 75 ) represents the monthly tuition and the one-time materials fee that Jamie pays for his two children
ss7ja [257]

Answer:  x represents the number of months, 150 represents one-time materials fee,  2( 21x + 75 ) represents total fees in x months and 42 represents rate of change.

Step-by-step explanation:

Since, Here the expression 2( 21x + 75 ) represents the monthly tuition and the one-time materials fee that Jamie pays for his two children to join a science club.

Let, f(x) represents the monthly tuition fee

Therefore, f(x)= 2( 21x + 75 )

⇒f(x)= 42 x +150

Again according to the question, there is a one-time materials fee which must be free from the variable.

Therefore In f(x) , 150 must represent one time material fees.

And, x is variable, and here number of months is a variable.

Thus, x must be denote the number of months.

And, 42 must be denote the fees for 1 month.



8 0
3 years ago
The ordered pair(5,-3) is a solution to which of the following inequalities?
Dmitrij [34]

A plumber worked 26 hours a week for half a year. If his hourly wage was $40, how much did he earn during this time period?

<span> <span>A.</span>$1040</span><span> <span>B.</span>$27,040</span><span> <span>C.</span>$54,080</span><span> <span>D.</span><span>$520</span></span>
7 0
3 years ago
lauren bedroom is shaped like a square with sides of  six yards. what is the perimeter of that bedroom
S_A_V [24]
24, just do 6x4 because there are 4 sides.
5 0
3 years ago
Which picture shows the correct graph of |x|=5?
Marrrta [24]

|x| = 5

x = 5 or x = -5

You need a graph that has a closed dot on -5 and a closed dot on 5.

Answer: B. Picture B

4 0
3 years ago
Find the distance between the points (13,5) and (10,1)
ElenaW [278]
The distance is (3,4)

Simply subtract the x and y functions.

13 - 10 = 3 

5 - 1 = 4 

8 0
3 years ago
Other questions:
  • A spherical ball just fits inside a cylindrical can that is 10 centimeters tall, with a diameter of 10 centimeters. Which expres
    6·1 answer
  • Pls help good points
    9·1 answer
  • Plzzzz help I’ve been stuck on this
    11·1 answer
  • If The veterinarian weighs Jim's two dogs. His collie weighs 40 pounds. His terrier weighs 288 ounces. What is the total weight
    8·1 answer
  • Ella has 0.5 lb of sugar. how much water should she add to make the following concentrations? Tell Ella how much syrup she will
    12·2 answers
  • What is tan 25° to the nearest hundredth​
    7·1 answer
  • What is the domain of the finction f(x)= x^s
    5·1 answer
  • Help answer if u know
    7·2 answers
  • Can anyone heelp me pls pls
    10·1 answer
  • Write the slope intercept form of the equation of the line that passes through the point (4, 8) and has a slope of -2.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!