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
Grace [21]
2 years ago
12

Which one is true!!!

Mathematics
1 answer:
irga5000 [103]2 years ago
7 0
B and C I believe .............
You might be interested in
Phoebe compared the cost of books in 9 different stores.
krek1111 [17]
You have to put the numbers in order and find the middle value so in this case it's-

2, 4, 4, 5, 6, 7, 8, 8, 8 

The answer is $6
7 0
3 years ago
A= [2, 3; 2, 1], B=[3; 5]. Find AB & BA if possible
oksano4ka [1.4K]

Answer:

The value of AB is \left[\begin{array}{ccc}21\\11\end{array}\right] and it's not possible to multiply BA.

Step-by-step explanation:

Consider the provided matrices.

A=\left[\begin{array}{ccc}2&3\\2&1\end{array}\right], B=\left[\begin{array}{ccc}3\\5\end{array}\right]

Two matrices can be multiplied if and only if first matrix has an order m × n and second matrix has an order n × v.

Multiply AB

Matrix A has order 2 × 2  and matrix B has order 2 × 1. So according to rule we can multiply both the matrix as shown:

AB=\left[\begin{array}{ccc}2&3\\2&1\end{array}\right] \left[\begin{array}{ccc}3\\5\end{array}\right]

AB=\left[\begin{array}{ccc}2\times 3+3\times 5\\2\times 3+1\times 5\end{array}\right]

AB=\left[\begin{array}{ccc}6+15\\6+5\end{array}\right]

AB=\left[\begin{array}{ccc}21\\11\end{array}\right]

Hence, the value of AB is \left[\begin{array}{ccc}21\\11\end{array}\right]

Now calculate the value of BA as shown:

Multiply BA

Matrix B has order 2 × 1  and matrix A has order 2 × 2. So according to rule we cannot multiply both the matrix.

We can multiply two matrix if first matrix has an order m × n and second matrix has an order n × v.

That means number of column of first matrix should be equal to the number of rows of second matrix.

Hence, it's not possible to multiply BA.

5 0
3 years ago
A printer makes more than 3 copies of a book every hour. How many books can the printer make in 4 hours?
sineoko [7]

Answer:

12

Step-by-step explanation:

4 x 3 is 12

7 0
2 years ago
Read 2 more answers
If f(x+5)=x^+kx+30,k=
Vilka [71]

30 divided by 5 is 6, so the other term is (x+6). (x+5)(x+6) becomes x^2+11x+30, so k is equal to 11.


5 0
2 years ago
If 3x is the opposite of -5, what is the value of x?<br> -3<br> 5<br> 5/3<br> -1/15
Leokris [45]
The Value of X is 5 is the answer
5 0
2 years ago
Other questions:
  • Simplify the expression sin 2x+ sin x + cos2x - 1.
    7·1 answer
  • Maria bought 7 boxes. A week later half of all her boxes were destroyed in a fire. she only has 22 boxes left. How many did she
    10·1 answer
  • William Arsenio is remodeling his home in order to save money he is upgrading the plumbing himself he needs 27 pieces of copper
    12·1 answer
  • Consider the reduction of the rectangle. A large rectangle has a length of 16.8 feet and width of 2.3 feet. A smaller rectangle
    14·2 answers
  • A particular frozen yogurt has 75 calories in 2 ounces.How much calories are in 8 ounces of the yogurt?
    15·1 answer
  • PLEASE HELP!!! I️ HAVE TONS OF HW DUE!!! If 8 is added to twice a number and there some is multiplied by five the result is the
    15·1 answer
  • How to get negative 2 using four 4s
    10·1 answer
  • Help me with this pls!
    15·1 answer
  • Please help with 7 and 8 and 9 please
    7·1 answer
  • Quadrilateral ABCD is shown below. Find the value of x<br>​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!