Answer:
first angle be 30°
second angle be 70°
third angle be 80°
Step-by-step explanation:
first angle be x
second angle be y
third angle be z
x+y+z=180
given, y+z = 5x; z=5x-y
also, z=y+10
5x-y = y+10
5x= 10+y+y = 10+2y
x= (10+2y)/5
x+y+z=180
(10+2y)/5 + y + y+10 = 180
(10+2y)/5 = 180 -2y -10
(10+2y)/5 = 170-2y
multiply both sides by 5
10+2y = 5(170-2y)
10+2y= 850-10y
2y+10y = 850-10
12y= 840
y= 840/12 = 70°
z=y+10 =70+10= 80°
5x= (10+2y) = 10+2(70) = 10+140= 150
x = 150/5 = 30°
Answer:
What I think it might be is 62.3
11 is the answer.
10+10=20
20-9=11
11+9=20
11
Answer:
There are 24 dimes
Step-by-step explanation:
we can make an equation and then solve it to find our answer.
n = number of nickles at $0.05 each
4d = number of dimes at $0.10 each
(0.5)n + (0.10)(4n) = 5.40
We now solve this
First, multiply
0.5d+0.4d=5.40
then add
0.9d=5.40
then divide
D=6
Then, multiply by four since there are four times as many dimes
6x4=24
There are 24 dimes