Answer:
the answer is B, I know because I took the test
Step-by-step explanation:
A + d = 7......a = 7 - d
5a + 8d = 44
5(7 - d) + 8d = 44
35 - 5d + 8d = 44
-5d + 8d = 44 - 35
3d = 9
d = 9/3
d = 3
a + d = 7
a + 3 = 7
a = 7 - 3
a = 4
Harlan can purchase 4 pair of athletic socks (a) and 3 pair of dress socks (d)
Answer:
The usually speed of the bus is 50 miles/h.
Step-by-step explanation:
Let the usual speed of the bus be x mile/hour.
We know that
The bus travels 200 miles.
To reach its destination it takes time h
This week however the bus leaves at 5:40.
The bus late 40 minutes
Now the speed of the bus is = (x+10) miles/h
The new time to reach the destination is h
According to the problem,
⇒2(x²+10x)=200×10×3
⇒x²+10x = 3000
⇒x²+10x -3000=0
⇒x²+60x-50x-3000=0
⇒x(x+60)-50(x+60)=0
⇒(x+60)(x-50)=0
⇒x= -60,50
∴x=50 [since speed does not negative]
The usually speed of the bus is 50 miles/h.
Answer:
x=2/15
Step-by-step explanation:
1/5+x+2/3=1
3/15+x+10/15=15/15
13/15+x=15/15
x=2/15
Length of AB: 8 - - 6 = 14
Mid point at half length: 14/2 =7
—>Point G