Answer: first picture is for y=-5/3x + 3
Step-by-step explanation:
Answer:
2,541 minutes
Step-by-step explanation:
195.12 = .06m+23.7+ 0.8(23.7)
195.12 = 23.7 + 0.06m + (18.96)
195.12 = 42.66 + 0.06m
152.46 = 0.06m
2,541 = m
Answer:
$411.30 in a month with 30 days
Step-by-step explanation:
$4.57 times 3= $13.71 per day
Assuming there are 30 days in a month, $13.71 times 30= approximately $411 monthly, or more specifically $411.30 in a month with 30 days.
Answer:
A. 38
Step-by-step explanation:
Let d = number of dimes.
Let n = number of nickels.
First equation:
There are twice as many dimes as nickels. The number of dimes is 2 times the number of nickels. The first equation is:
<em>d = 2n</em>
Second equation:
The value of a dime is $0.10. The value of a nickel is $0.05. The value of d number of dimes is 0.1d. The value of n number of nickels is 0.05n. The total value of d dimes and n nickels is 0.1d + 0.05n. We are told the total value of her dimes and nickels is $4.75. That gives us the second equation:
<em>0.1d + 0.05n = 4.75</em>
We have two equations and two unknowns, so we can answer this question by solving a system of two equations in two unknowns.
d = 2n
0.1d + 0.05n = 4.75
We will use the substitution method.
Since d = 2n, replace d in the second equation with 2n.
0.1(2n) + 0.05n = 4.75
0.2n + 0.05n = 4.75
0.25n = 4.75
n = 4.75/0.25
n = 19
Now that we know the number of nickels, we use the equation d = 2n to find the number of dimes.
d = 2n
d = 2 * 19
d = 38
Answer: Debra had 38 dimes.
Y = 8/cos60 = 16
x = sqr(16^2 + 8^2) = 8sqr(3) = 13.86 approx
