Answer:
309
Step-by-step explanation:
The formula for simple interest is
A = P(1 + rt)
where A is the amount of money in the account
P is the principal invested
r is the interest rate in decimal form
t is the time invested in years
We know
P = 300
r = 4% = .04
t = 9 months = 9 months * 1 year/12 months = .75 year
Substituting into the equation
A = 300(1 + .04*.75)
=300 (1+.03)
=300(1.03)
= 309
To solve this problem, simply substitute the values that have been given to you for both X and y. I believe in this question, it would be asking you to verify or check if the values of X and y are correct.
X = 1/4
Y = 1/2.
2x^2 + y = 5/8
2(1/4)^2 + 1/2 = 5/8
2(1/16) + 1/2 = 5/8
1/8 + 4/8 = 5/8
5/8 = 5/8.
1/2 = 4/8
2/16 = 1/8 in lowest terms.
To work out the percent increase, we can use the following equation:
24 / 10 = 2.4
2.4 x 100 = 240%
Hope I helped!
The percentage error is 23%
Explanation:
The estimated total cost of the groceries = $50
The actual cost of the groceries = $65
To find the error value, we need to subtract the value of actual cost and total cost of the groceries.
Thus,
error value = actual cost - total cost
error value 
Hence, error value = $15
The formula to determine the percent error is given by
Substituting the values in the formula, we get,
Rounding off the value, we have, 23%
Thus, the percentage error is 23%
Answer:
Answer:
Kaya's answer is correct.
Step-by-step explanation:
The number of dots in successive figures are
8, 16, 24.
So Kaya's solution 8n is correct.
When n = 1, first square = 8*1 = 8 dots
n = 2: second square = 8*2 = 16
n = 3, 3rd square = 8*3 = 24.
If I have interpreted Kianna's formula correctly
for n = 1, then the number of dots = 2(1+ 1)^2 - 2(1 - - 1)^2
= 0.
