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
Scilla [17]
3 years ago
5

What is the magnitude of -2a - 3b when a=3i+9j and b=4i-6j?

Mathematics
1 answer:
nekit [7.7K]3 years ago
6 0

Answer: Dot product of the 2 vectors = 0. Therefore cos x = 0 where j is the angle between the 2 vectors. S0 j = 90°... I believe.

You might be interested in
for a certain year, the combined revenues for PepsiCo and coca-cila were $51 billion. If the revenue for PepsiCo was $9billiin m
BlackZzzverrR [31]
So if the combined revenues were $51 billion. Then it would be best to divide that between the two companies as a starting point. Each company would have $25.5 billion if they were split 50-50. Since PepsiCo has 9 billion more than Coca-Cola. Simply take PepsiCo's value and add $9 billion to it, which would be $34.5 billion. Finally, take $51 billion, subtract it $34.5 billion, which is PepsiCo's value to get Coca-Cola's value, which is 16.5 billion for me.
6 0
3 years ago
Read 2 more answers
Does it matter term is first and which term is second in a ratio?
aleksklad [387]
No because it is the same but in a different way

5 0
3 years ago
Can anyone help me please? I really need it.
Artemon [7]
First you set f(x) and h(x) equal to each other. So 1/x+1=2x+3. Next, you multiply each side by 1 to cancel out the fraction. So now the answer is x+1=2x+3. Now subtract 1 from each side. X=2x+2. Subtract 2x from each side now. -2x=2. Divide by -2x and get the answer x= -1
6 0
3 years ago
I need help please and thank you
Ede4ka [16]

680 exponent 3. you have to multiply and divide so..... yea

3 0
3 years ago
determina la medida de cada uno de los angulos del triángulo ABC si se conoce que (3x+1)° (3x+4)° y (2x-1)°​
Triss [41]

Answer:

∠A=67°

∠B=70°

∠C=43°

Step-by-step explanation:

<u><em>The correct question in English is</em></u>

Determines the measurement of each of the angles of the triangle ABC if it is known that A=(3x+1)°,B=(3x+4)° and C=(2x-1)°.

we know that

The measure of the interior angles in a triangle must be equal to 180 degrees

so

∠A+∠B+∠C=180°

substitute the given values

(3x+1)\°+(3x+4)\°+(2x-1)\°=180\°

solve for x

(8x+4)\°=180\°

8x=180-4

x=22

Find the measure of each angle

∠A=(3(22)+1)=67°

∠B=(3(22)+4)=70°

∠C=(2(22)-1)=43°

6 0
3 years ago
Other questions:
  • which answer choice explains the pattern for how to find the slope using an equation in standard form?
    9·1 answer
  • In a study of towns, there was a positive correlation between the number of mail boxes and number of traffic lights in a town.
    12·2 answers
  • Please try this, it's a basic proof that I don't know how to do. Thanks!
    7·1 answer
  • Yes Or No Full Question Is Below Thanks
    7·2 answers
  • What is the area of the figure?<br> 2 in.<br><br> 3.4in.
    11·1 answer
  • Help me with question b plz
    9·1 answer
  • What is the relationship between segment ED and segment AC?
    12·1 answer
  • Solve 10 (2y +2) - y =2 (8y- 8)
    11·1 answer
  • If two dice are rolled one time, find the probability of getting a sum less than or equal to 4 ​
    6·1 answer
  • Jillian is making accessories for the soccer team. She uses 761.78 inches of fabric on headbands for 39 players and 2 coaches. S
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!