Answer:
try 5
Step-by-step explanation:
Answer:
Step-by-step explanation:
Complementary angles form a right angle and supplementary angles form a straight angle.
<h3>#7</h3>
<u>Complementary:</u>
<h3>#8</h3>
<u>Supplementary:</u>
- 2x + 6x + 20 = 180
- 8x = 160
- x = 20
Set up a proportion
12/144 = 17/y
cross multiply
12y = 144*17
12y = 2448
y = 2448/12
y = 204
3 is the deviation of the set of data
Answer:
Number of dimes Sandy has = (20 - x)
Step-by-step explanation:
Let the number of nickels Sandy has = N
And the number of dimes she has = D
Total number of coins she has = 20
N + D = 20 ------(1)
If she has the number of nickels = x
Therefore, expression that represents the number of dimes she has will be
x + D = 20
D = (20 - x)
Number of dimes Sandy has = (20 - x)