Answer:
D.
Step-by-step explanation:
Use where r is radius (12) and h is height (17).
12^2=144
(144)(17)=2448
Note that a percentile tells us how many percents of numbers that are above the number at the percentile. So the 70th percentile tells us that 70% of the students are taller than Jake. That means 30% of the students are either at the same height or shorter than Jake.
30% of 1100 would be 0.3*1100 = 330.
So there are 330 students that are either at the same height or shorter than Jake.
1. 2x+3=4x+2
⇒ 4x-2x=3-2
2x=1
x=1/2
There is one solution.
2. 18p-10p=5+6/2
8p=5+3
8p=8
p=8:8
p=1
3. 6a/3=2a
2a-a= -2 -3
a= - 5
4. 5+r-2=9,
5-2+r=9
3+r=9
r=9 - 3
r=6
5. -0,9 m= 9
m= - 10
6. -2 (x+1/4)=5-1=4
x+1/4= -2
x= -2 - 1/4
x= -8/4 - 1/4= - 9/4
7. 6f+4f= 6 + 12
10 f = 18
f=18/10=1,8
8. 7n - 3n= 16
4n=16
n=16:4
n=4
9. 1/3m-5/6m= - 15 - 3
2/6 m-5/6=-18
- 3/6m=-18 ⇒ 1/2m=18
m=2*18=36
Answer:
The left one and middle one
Step-by-step explanation:
same angles and length-width ratios
2x + 4 = 2x + 2
2x - 2x = 2 - 4
0 = -2 ......(when the variables drop out and ur left with an untrue statement, this means there are no solutions)
2x + 5 = 2x + 5
2x - 2x = 5 - 5
0 = 0.....(when the variables drop out and ur left with a true statement, this means there is infinite solutions)
so the two possible solutions when the variables drop out are : no solutions and infinite solutions