Answer:
Our system is : D + Q = 50 and 0.1*D + 0.25*Q = $9.50
Let D = # of dimes
Let Q = # of quarters
30 Quarters and 20 dimes
Step-by-step explanation:
Let D = # of dimes
Let Q = # of quarters
so
D + Q = 50 and 0.1*D + 0.25*Q = $9.50
We can solve this.
D = 50 - Q
0.1*(50 - Q) + 0.25*Q = $9.50
5 - 0.1*Q + 0.25*Q = 9.5
5 + 0.15*Q = 9.5
0.15*Q = 4.5
Q = 4.5 / 0.15 = 30
D = 50 - Q = 50 - 30 = 20
Answer:
(D) -2
Step-by-step explanation:
Plug in r=5 and s=-7 to the equation:
-6(5)+(-7)-(5)(-7)
Now we can solve and simplify:
-30-7+35
Combine:
-2
Answer:
C
Step-by-step explanation:
Let find the measure of the angle supplementary to Angle 1.
Angle 1 is supplementary to that angle so
3 7/8 is left.
multiple 3 7/8 by 3 since there's 3 pieces cut.
then subtract 15 1/2 by 11 5/8 (the sum of the 3 boards) and you get your answer.
Answer:
D 70/3
Step-by-step explanation:
5 /3 * 2/3 * 21
10/9 * 21/1
210/9
We can divide by 3 on the top and bottom
70/3
