Answer: she spent $10.21
Step-by-step explanation:
She buys 10 eggs for $0.33 per egg. This means that the total cost of eggs that she bought would be
10 × 0.33 = $3.3
She also buys 3 pounds of beets at a cost of $1.42 per pound. This means that the total cost of of beets that she bought would be
3 × 1.42 = $4.26
Before she leaves, Ms. Littlebird purchases 5/8 lb of spinach, which costs $4.24 per pound. This means that the total cost of spinach that she bought would be
5/8 × 4.24 = $2.65
Total amount that Ms Littlebird spend at the farmers market is
3.3 + 4.26 + 2.65 = $10.21
Answer: the rate of the boat in calm water is 9 mph and the rate of the current is 7 mph
Step-by-step explanation:
Let x represent the rate of the boat in calm water.
Let y represent the rate of the current.
A boat goes 32 miles downstream in two hours. Assuming that it travelled in the direction of the current, its total speed would be
x + y mph
Distance = speed × time
Distance covered downstream is
32 = 2(x + y)
16 = x + y - - - - - - - - - - - -1
The return trip against the current takes sixteen hours.
Its total speed would be x - y mph
Distance = speed × time
Distance covered on return trip is
32 = 16(x - y)
2 = x - y - - - - - - - - - - - -2
Adding equation 1 and equation 2, it becomes
18 = 2x
x = 18/2 = 9 mph
Substituting x = 9 into equation 1, it becomes
16 = 9 + y
y = 16 - 9 = 7 mph
Area of circle is 'pi'r^2
pi r^2 = 123
r^2
X+y=8
y=3x
You would want to substitute the y for the 3x
x+3x=8
You can now add the x with the 3x to get 4x
4x=8
Now divide the 4 on both side to solve for x
x=2
Now to solve for y just substitute the x for the 2
y=3(2)
Now multiply the 3 and the 2 to solve for y.
y=6
So your corrct answer is B:(2,6)
Answer:
B) -7
Step-by-step explanation:
x+y
8+(-15)=8-15=-7
