Answer:
200 questions
Step-by-step explanation:
If he missed 68 questions and got a 66%, that means 68 is 34% of the total number of questions
To find the total questions, divide 68 by 0.34
68/0.34
= 200
So, there were 200 total questions on the final exam
Answer:
6 hour 20 minutes
Step-by-step explanation:
We are given that a space plane skims the edge of space at 400 miles per hour.
Circumference of the planet=25000 miles approximately
We have to find the time taken by the plane to travel around the planet.
Speed of plane=4000 miles per hour
Total distance traveled by the plane= approximately 25000 miles
Because plane travel in circular path therefore, distance
traveled by plane=Circumference of planet
Time =
Substitute the values then we get
Time =
Time=
1 hour=60 minutes
Hence, the plane takes time to travel around the planet=6 hour 20 minutes
Answer:
Basicly you just combine the terms that are the same. Combine -4x and -7x. Also combine 3 with -8.
Step-by-step explanation:
If the number is 'xy'
Y-x=3
7xy=4yx
y=3+x
7(10x+y) =4(10y+x)
70x+7y=40y+4x
3+x=y
70x+7(3+x) =40(3+x) +4x
70x+21+7x=120+40x+4x
77x+21=120+44x
77x-44x=120-21
33x=99
x=3
y=x+3
y=3+3
y=6
Hence The number is 36....