Answer:
1.125 h = 1h 7.5 min = 1 h 7 min 30 sec
Step-by-step explanation:
John makes 1/1.5 work per h.
His partner makes 1/4.5 work per h.
Together they make (1/1.5 + 1/4.5) = (3/4.5 + 1/4.5) = 4/4.5 work per h.
They will work
1 : 4/4.5 = 4.5/4 = 1.125 h = 1 h + 0.125 h = 1h + 0.125h*60min/1h =
=1h 7.5 min = 1 h 7 min 30 sec
Answer:
4x +10 + 3x +2 = 180 (since they're supplementary, the angles together =180)
7x +12 =180 (combine like terms on left side, and subtract 12 from both sides)
7x = 168 (divide both sides by 7 to isolate x)
x= 24
angle 1 = 4(24)+10 (plug x into the expression for each angle, and solve)
..................96 +10
angle 1 = 106 degrees (the measure of the first angle)
angle 2 = 3(24) +2
..................72 +2
angle 2 = 74 (the measure of the second angle)
106 +74 =180 (the two add up to 180, so they're supplementary)
Step-by-step explanation:
I hope this helps :)
Answer:
0.86 hour
Step-by-step explanation:
Jess jogs at a rate of 6 miles per hour.
The next time she jogs she increases her speed to a rate of 7 mile per hour.
The new rate of Jess's jogging is 7 miles per hour
How long will it take her to jog 6 miles?
Hence:
7 miles = 1 hour
6 miles = x hours
Cross Multiply
7 × x = 6 × 1
x = 6/7
x = 0.8571428571 hour
Approximately = 0.86 hour
It will take Jess 0.86 hour to jog for 6 miles
Answer:
you didnt put the expression
Step-by-step explanation:
i cant do anything to help sorry
