Answer:
d. 300%
Step-by-step explanation:
The given relation is ...
60%·A = 20%·B
Dividing by 20%, we see that ...
3·A = B
Of course, 3 = 3×100% = 300%, so B is 300% of A.
Answer:
option d is correct
20
Step-by-step explanation:
Formula for permutation
is given by:
![_{n}P_{r} = \frac{n!}{(n-r)!}](https://tex.z-dn.net/?f=_%7Bn%7DP_%7Br%7D%20%3D%20%5Cfrac%7Bn%21%7D%7B%28n-r%29%21%7D)
Given the expression:
![_{5}P_{2}](https://tex.z-dn.net/?f=_%7B5%7DP_%7B2%7D)
here, n = 5 and r = 2
then;
![_{5}P_{2} = \frac{5!}{(5-2)!}](https://tex.z-dn.net/?f=_%7B5%7DP_%7B2%7D%20%3D%20%5Cfrac%7B5%21%7D%7B%285-2%29%21%7D)
⇒![_{5}P_{2} = \frac{5!}{3!} = \frac{1 \cdot 2 \cdot 3 \cdot 4 \cdot 5}{1 \cdot 2 \cdot 3}](https://tex.z-dn.net/?f=_%7B5%7DP_%7B2%7D%20%3D%20%5Cfrac%7B5%21%7D%7B3%21%7D%20%3D%20%5Cfrac%7B1%20%5Ccdot%202%20%5Ccdot%203%20%5Ccdot%204%20%5Ccdot%205%7D%7B1%20%5Ccdot%202%20%5Ccdot%203%7D)
Simplify:
![_{5}P_{2} =20](https://tex.z-dn.net/?f=_%7B5%7DP_%7B2%7D%20%3D20)
Therefore, the value we get, 20
Answer:
Okay, so we know a number of students and the amount of girls as a bracket. So what we have to do now is multiply them with each other.
28 *4/7 = 16
So there are 16 girls in Mr. Chang´s class.
You can also determine the boys by - the students with the girls:
28-16=12 boys
Have a nice day :D
Step-by-step explanation:
brainliest?
<span>A.
4x + 2(x – 3) = 4x + 2x – 11
4x + 2x - 6 = 4x + 2x - 11
6x - 6 = 6x - 11
-6 = -11
since -6 is not equal to -11, so there's no solution
B. Distributive property </span>