answer these or you don't have to just need some help?
13.
Which set of numbers has 270 as its least common multiple?
A.30, 90, 390
B.18, 30, 54
C.25, 125, 120
D.2, 9, 15
14.
Which list shows the numbers in order from greatest to least?
A.16, 8, 4, –12, –15
B.–12, –15, 16, 8, 4
C.16, 8, 4, –15, –12
D.–15, –12, 16, 8, 4
15.
Which shows the prime factorization of 50?
5 EXPOENT 2 · 10
2 EXPONET 2 · 5
2 EXPONET 2 · 5 EXPONET 2
2 EXPONET· 5 EXPONET 2
17.
Which number is closest to zero on a number line?
A.1/12
B.10/101
C.1/10
D.1/4
foot
13. To find the set of numbers with 270 as its least common multiple, we need to find the prime factorization of 270.
Prime factorization of 270: 2 x 3 x 3 x 3 x 5
Then, we look for sets of numbers that contain these prime factors.
Option A: 30 = 2 x 3 x 5, 90 = 2 x 3 x 3 x 5, 390 = 2 x 3 x 5 x 13
Option B: 18 = 2 x 3 x 3, 30 = 2 x 3 x 5, 54 = 2 x 3 x 3 x 3
Option C: 25 = 5 x 5, 125 = 5 x 5 x 5, 120 = 2 x 2 x 2 x 3 x 5
Option D: 2 = 2, 9 = 3 x 3, 15 = 3 x 5
The correct answer is Option A. The set of numbers {30, 90, 390} has 270 as its least common multiple.
14. To arrange the numbers from greatest to least, we simply compare them.
The correct answer is Option C. The numbers in order from greatest to least are {16, 8, 4, -15, -12}.
15. To find the prime factorization of 50, we divide it by prime numbers until we cannot divide anymore.
50 ÷ 2 = 25
25 ÷ 5 = 5
Therefore, the prime factorization of 50 is 2^1 x 5^2.
The correct answer is Option B: 2^2 x 5.
17. To determine which number is closest to zero on a number line, we compare their distances from zero.
In this case, we need to convert the given fractions to decimals to easily compare them.
A. 1/12 ≈ 0.083
B. 10/101 ≈ 0.099
C. 1/10 = 0.1
D. 1/4 = 0.25
Among the given options, the number closest to zero on a number line is Option A: 1/12.
I'm still not sure which one is the smallest still I'm doing the same test
270 = 2 * 3^3 * 5
A: 2*3*5, 2*3^2*5, 2*3*5*13 Nope
B: 2*3^2, 2*3*5, 2*3^3 Yes
C: 5^2,5^3,2^3*3*5 Nope
D: 2,3^2,3*5 Nope
14: A
did you really have a problem determining which numbers were greater than others?
15: 50 = 2*5^2, so the last, ignoring the EXPONENT with no value on the right.
17:
1/12 = 0.083
10/101 is almost 10/100 = 0.100
1/10 = 0.100
1/4 = 0.250
So, which do you think is the smallest?