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
Alexandra [31]
4 years ago
15

If a = 5i - 6j and b = -2i + 4j , find -3a + 2b

Mathematics
1 answer:
gavmur [86]4 years ago
3 0

Answer:

-19i + 26j

Step-by-step explanation:

-3 (5i - 6j) + 2 (-2i + 4j)

Distribute/multiply the -3 to everything in the parentheses

-15i + 18j + 2 (-2i + 4j)

Distribute/multiply the 2 to everything in the parentheses

-15i + 18j -4i + 8j

Combine like terms

-19i +26j

You might be interested in
Exponential functions grow by equal factors over equal intervals. If a column of Δy was added to prove this relationship, what w
pentagon [3]

Answer:

D)

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
Lucy reads 72 chapters of a book in 8 hours. What is her rate in chapters per hour?
Sophie [7]
She read nine chapters each hour
8 0
3 years ago
Read 2 more answers
A football stadium contain 80% of its full capacity of spectators for a grand final match. At the end of the game, spectators le
nekit [7.7K]

Answer:

A. 30000

B. 12000

Step-by-step explanation:

Find out how much spectators leave in 1 minute.

1 second = 5

1 minute = 5 x 60 = 300 (60 seconds)

20 minutes = 300 x 20 = 6000

Since there were only 80% of the full capacity of spectators and after minutes it became 60%...

80% - 60% = 20%

20% = 6000

1% = 6000 ÷ 20 = 300

100% = 300 x 100 = 30000

1 minute = 300 spectators leaving

1 hour = 300 x 60 = 18000 (60 minutes)

30000 - 18000 = 12000

8 0
3 years ago
If your born August, 15, 2001 Then how old would you be now?
spin [16.1K]

Answer:

18 years old you would be

3 0
3 years ago
Read 2 more answers
the ratio of the number of adults to the number of children in a library is 12:5 if there are 45 children in the library how my
anygoal [31]
I’m guessing 108. 45 divided by 5 is 9, so 9 times 12 is 108.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Convert 3 kilograms to onces
    14·1 answer
  • PLEASE HELP ME!! I WILL MARK BRAINIEST
    10·1 answer
  • Which of the following could be true if y ≤ -75?
    15·1 answer
  • Which relation is a function?
    7·1 answer
  • Gemma and Leah are both jewelry makers. Gemma made 106 beaded necklaces. Leah made 39 more necklaces than Gemma.
    5·2 answers
  • Help on a time limit!
    14·1 answer
  • Please help! I will give brainliest!<br> (6^9·6^5)/ 6^15
    11·1 answer
  • Please help it's urgent! ​
    14·1 answer
  • The Fibonacci sequence 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, … is formed by summing two consecutive numbers to get the next number.
    15·1 answer
  • Is every ray part of an angle, not including straight angles?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!