<h3>
Answer:</h3>
- $2693.12
- $2125.00
- B) The area of the field is 10.24 times the area of the playground
<h3>
Step-by-step explanation:</h3>
1. Each year the balance is multiplied by 1.09, so after 5 years, the balance is multiplied by 1.09^5 ≈ 1.53862395. Subtracting the original invetment amount gives the value of the interest earned.
... 5000 × 1.53862395 - 5000 = 5000 × 0.53862395
... ≈ 2693.12 . . . . matches choice D
2. The interest earned is given by the formula ...
... I = Prt . . . . . where P is the principal, r is the interest rate, and t is the time period.
Filling in the given numbers, you have ...
... I = 2500×0.085×10 = 2125 . . . . matches choice B
3. The product of length and width is the area. If both length and width are multiplied by 3.2, then the area is multiplied by 3.2×3.2 = 10.24. The appropriate choice is B.
You have to divide 157 by 9 . Hope this helped (:
Answer:
Step-by-step explanation:
Answer:
x = ±10
Step-by-step explanation:
4x² - 400 = 0
Add 400 to both sides
4x² = 400
Divide both sides by 4
x² = 100
Take the square root of both sides
x = ±10
Answer:
80+50P
Step-by-step explanation:
80 is fixed
50 is variable
1 device = 130
2 decices = 180
