Answer:
You will gain $18, so you will have $318 after a year.
Step-by-step explanation:
9514 1404 393
Answer:
True
Step-by-step explanation:
In scalar multiplication, each component of the vector is multiplied by the scalar. The description is True.
Answer:
95
Step-by-step explanation:
5$ less 50 for the jacket half 50 +50 = 100 -5 =95
The total scores of the x students from class A can be calculated by multiplying x and the average which is equal to 85. That is 85x.
In similar manner, we are able to find for the total scores of the students from Class B. That would be, 90y.
Combining the scores, the new average then becomes 88. This is equal to,
(85x + 90y) / (x + y ) = 88
Cross-multiplying,
85x + 90y = 88x + 88y
Combine all the x's and y's in each side of the equation.
85x - 88x = 88y - 90y
Combining terms,
-3x = -2y
The ratio is obtained through the step below,
-3x/-3y = -2y/-3y
x/y = 2/3
Thus, the ratio is 2/3.
Answer:
The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown".
