Which three prime numbers multiply to get 15? 22? 42? 50? 63?

Which three prime numbers multiply to get 15? 22? 42? 50? 63?

15=1*3*5
22=1*2*11
42=2*3*7
50=2*5*5
63=3*3*7

Which prime numbers multiply the following integrals to get 15,22,42,50,63

15=3*5
22=2*11
42=2*3*7
50=2*5*5
63=3*3*7

Which product of three prime numbers is 15? 22?

Correct answer:
1,3,5
1,2,11

Convert the following false fractions into integers or fractions: 145 out of 12, 15 out of 8,

145 out of 12 = 12 and 1 / 12
15 out of 8 = 1 and 7 / 8
17 out of 5 = 3 and 2 / 5

If a = {x | 2x − 1 | 3}, B = {x | 2x + 13 − x | 0}, find a ∩ B

Because the set a = {x | 2x − 1 | 3}, B = {x | 2x + 13 − x ＜ 0}, the set a = {x | 1 ＜ x ＜ 2}, B = {x | x ＜ 12 or X ＞ 3}, a ∩ B = {x | 1 ＜ x ＜ 12}

What is 95 degrees 51'36 "equal to?

95 degrees 51'36 "equals 95.86 degrees

SiNx + 2cosx = 1 x belongs to [0,90 °]. How to find SiNx and cosx respectively

Forced calculation
SiNx = root (1-cosx ^ 2)
1-cosx^2=1-4cosx+4cosx^2
Finishing 3cosx ^ 2-4cosx = 0

One fraction plus one fraction is 11 out of 12

The factor of 12 has 2, 3, 4, 6, and the sum of any factor is not equal to 11, so there is no solution to this problem. If it is added to 3 terms, there is a solution, 2 + 3 + 6 = 11
So 11 / 12 = 2 / 12 + 3 / 12 + 6 / 12 = 1 / 6 + 1 / 4 + 1 / 2

If SiNx = 4 / 5 and X is an acute angle, then SiNx / 2-cosx / 2=

If it is SiNx / 2-cosx / 2, then because SiNx = 4 / 5, X is an acute angle, so cos = 3 / 5, because SiNx / 2 = √ (1-cosx) / 2, cosx / 2 = √ (1 + cosx) / 2, so the original formula = √ (1-cosx) / 2 - √ (1 + cosx) / 2 = √ (- cosx) because cosx = 3 / 5

127.53 divided by 5 is calculated by a simple method

（120+7.53）÷5
=120÷5+7.53÷5
=24+1.506
=25.506