Answer:
y = -4x + 11
D is correct
Step-by-step explanation:
Write in slope - intercept form, y = mx + b.
Hope this helps :)
Answer:
C
Step-by-step explanation:
6a^2 is the formula
plug in and solve
Start by getting like terms to one side.
x/9 - x/10 = -4
now make the fractions have a common denominator so that you can subtract
10x/90 - 9x/90 = -4
now simplify
x/90 = -4
now multiply each side by 90 to get rid of the fraction
x = -360
to check, just plug in the value of x into your original equation
it should come out to
-40 = -40
Answer: the coin bank has 30 nickels and 10 dimes.
Step-by-step explanation:
The worth of a dime is 10 cents. Converting to dollars, it becomes
10/100 = $0.1
The worth of a nickel is 5 cents. Converting to dollars, it becomes
5/100 = $0.05
Let x represent the number of nickels in the coin bank.
Let y represent the number of dimes in the coin bank.
A coin bank contains only nickels and dimes. The total value of the coins in the bank is $2.50. This means that
0.05x + 0.1y = 2.50 - - - - - - - - - - - 1
The number of nickels is 3 times the number of dimes. This means that
x = 3y
Substituting x = 3y into equation 1, it becomes
0.05 × 3y + 0.1y = 2.50
0.15y + 0.1y = 2.5
0.25y = 2.5
y = 2.5/0.25 = 10
x = 3y = 3 × 10
x = 30
The answer you are looking for is Pi
