Answer:
A) The width is 12 cm; the average time is 3 minutes
Step-by-step explanation:
Cross multiply.
5 × y = 3 × 20
5y = 60
5y ÷ 5 = 60 ÷ 5
y = 12
The width is 12 cm. Moving onto the time.
Cross multiply.
4 × y = 12 × 1
4y = 12
4y ÷ 4 = 12 ÷ 4
y = 3
The time is 3 minutes.
Given:
The function is:
To find:
The initial value of the function.
Solution:
We have,
The value of the function at x=0 is called the initial value of the function.
For x=0, we get
Clearly 0.88 is a non zero number and zero to the power of a non zero number is always 1.
Therefore, the initial value of the function is 350.
Answer:
a = 15
b = 18
e = 31
Answer:
3.4
Step-by-step explanation:
Let the original price of the bag be = P, the selling price =2.89 after a 15% discount,
Then, Selling price= Original price- Discount on original price
Thus, the original price was 3.4.