Answer:
4.2%
Step-by-step explanation:
percent error = (estimated value - actual value)/(actual value) × 100%
Here, the estimated value is 250 g, and the actual value is 250 g.
percent error = (estimated value - actual value)/(actual value) × 100%
percent error = (250 g - 240 g)/(240 g) × 100%
percent error = 10/240 × 100%
percent error = 0.041666... × 100%
percent error = 4.2%
Answer:
D. N(a) = (a + 20)/3
Step-by-step explanation:
A(n) = 3n - 20
A is a function of n. The inverse will be: N is a function of a.
Change A(n) to y and n to x.
y = 3x - 20
Switch x and y.
x = 3y - 20
Solve for y.
x + 20 = 3y
3y = x + 20
y = (x + 20)/3
Now switch y to N(a) and x to a.
Answer: N(a) = (a + 20)/3
<u>Answer</u>:
Percentage of increase = 16%
===============================================
<u>Step-by-step explanation:</u>
Let the price of an item ⇒ x
When the price of the item increased by 45%, the price will be ⇒ 1.45 x
Then dropped by 20%
So, the final price will be ⇒ (1 - 0.2) * 1.45x = 0.8 * 1.45 x = 1.16 x
By comparing between the original price and the final price
The difference = 1.16 x - x = 0.16x
Percentage of increase = 
%
Answer:
n = 23
Step-by-step explanation:
if 1/2 (n-5) = 1/2 (23-5)
that must mean that n=23.
and if you are just looking for 1/2 of 23-5 that is just 9. (23-5) = 18 and half of 18 is 9
