Answer:
B
Step-by-step explanation:
if you count the number of boxes (2 bottom rows, and the first two columns) you will get the numbers you multiply, and the answer is the overlapping boxes or just multiply
<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.
Answer:
C. $16.60
Step-by-step explanation:
Let the cost per pound of salmon be represented by x
The cost per pound of swordfish be represented by y
Melissa buys 2 1/2 pounds of salmon and 1 1/4 pounds of swordfish. She pays a total of $31.25
2.5 × x + 1.25× y = $31.25
2.5x + 1.25y = 31.25
The swordfish costs $0.20 per pound less than the salmon.
y = x - 0.20
Hence, we substitute
2.5x + 1.25y = 31.25
2.5y + 1.25(x - 0.20) = 31.25
2.5y + 1.25x - 0.25 = 31.25
2.5x + 1.25x = 31.25 + 0.25
3.75x = 31.5
x = 31.5/3.75
x = $8.4
The cost per pound of salmon be represented by x = $8.4
y = x - 0.20
y = 8.4 - 0.20
y = $8.2
The cost per pound of swordfish be represented by y = $8.2
The cost of a pound of salmon and sword fish
= $8.4 + $8.2
=$16.60
Advice : use cy math.com on your computer
or photo math on your phone
