Answer:
A.) $56
Step-by-step explanation:
1. Convert 7% into the numerical version by either
A. Moving the decimal two spaces to the right, giving us .07
or
B. Making 7% into a fraction, 7/100
2. Now make an equation with the total amount of money (M) multiplied by the interest (P) inside of parenthesis. This will give us 7% of $800 in your case.
(800 × .07) → 56
3. Then, multiply by the number of years the interest has been accumulated.
56 × 1
The official equation for this is: a = p(1 + r)^t
a = amount at end (initial amount + interest gained)
p = initial amount
r = rate (percent interest)
t = time in years
The answer is √91 feet (which is the same as 9.54 feet).
Imagine this as a right triangle. A length of the foot is actually a hypotenuse (c). The distance from wall's base to the ladder foot is one of the sides of the triangle (let it be a).
So, using the Pythagorean theorem:
c² = a² + b²
It is given:
c = 10 feet
a = 3 feet
b = ?
c² = a² + b²
⇒ 10² = 3² + b²
100 = 9 + b²
b² = 100 - 9 = 91
⇒ b = √b² = √91 ≈ 9.54 feet
Answer:
i think A. because she is 4/2
2 drinks-$2.56
3 drinks-$3.84
4 drinks-$5.12
hope that this helps
