Answer:
$46
Step-by-step explanation:
Let the amount of money Darius's parents sent to the book fair be represented as:
We are told that:
Darius's parents sent money to the book fair to be split among the four children in his family. After they gave the money to the cashier, she told each child they had $11.50 to spend.
The Equation is give as:
x = 4 × $11.50
x = $46
Therefore, the total amount of money Darius's parents sent to the book fair is $46
Subract what she rode already from total:
48-18 = 30
Divide by number of days:
30/4 = 7.5
she will need to ride 7.5 miles per day
Answer:
d) last bottom picture
Step-by-step explanation:
This shape has 4 boxes and two are shaded. So, it means the fraction of 2/4. Hence, option (d) is the correct answer.
Answer:
C) 15
Step-by-step explanation:
Here we have to use the combination to find the number of possible combinations.
Total number of classmates (n) = 6
We are selecting 2 individuals. So r = 2.
The combination formula nCr =
Plug in n = 6 and r =2, in the above formula, we get
=
=
Simplifying the above factorial, we get
= 15
So the answer is C) 15
A symmetric matrix is a square matrix that is equal to its transpose.
<h3>Symmetric matrix</h3>
In order to understand what is meant by a symmetric matrix, we must first understand the following;
- A matrix is an arrangements of elements in rows and columns.
- A square matrix has equal number of rows and columns.
- The transpose of a matrix is a matrix obtained by interchanging rows and columns.
Hence, a symmetric matrix is a square matrix that is equal to its transpose.
Learn more about symmetric matrix: brainly.com/question/26184753