Answer:
200mm is smallest
Step-by-step explanation:
km-m-cm-mm(order of units)
Answer:
5/16
Step-by-step explanation:
This is a geometric sequence
aₙ=a₁*rⁿ⁻¹
a₆=10*.5⁶⁻¹
a₆=10*.5⁵
a₆=10*(1/2)⁻⁵
a₆=10*1/32
a₆=10/32=5/16
Answer:
5.0625
Step-by-step explanation:
1. (2/3)^-4
2."store" the ^-4 for later use
3.calculate 2/3 or .66
4.use the ^-4 on .66
Answer:
220 miles.
Step-by-step explanation:
Distance travelled = speed * time
Total distance travelled = 60 * 2 + 50*2
= 120 + 100
= 220 miles.
Answer:
There are 1240 students at Washington middle school.
Step-by-step explanation:
Percentages and Portions
We can find portions of a whole by correctly managing the percentages of each part. We know 25% of all students at Washington middle school were on the honor roll. From that portion, 60% of the students are seventh graders. That means 40% of the 25% are eight graders, i.e. 40*25%=10% were from eight grade.
We have 10% of all students are 124, thus the number of students are 124/10%=1240
There are 1240 students at Washington middle school.
Let's test the answer. 25% of 1240 students are on the honor roll, which is 310 students. 40% of 310 students are from 8th grade, 40%*310 = 124 as stated in the problem
