Answer: I did them with letters went from a to j but same order .
Step-by-step explanation:
Hi , idk if you know how to resolve those or you just was bored so in the first one I did firstly started by exchanging the letters and there number so , I wish it helped you at least a little more, bye good luck in life , you gonna be amazing : )
Given:
There are between 24 and 40 students in a class.
The ratio of boys to girls is 4:7
To find:
The number of students in the class.
Solution:
Let the number of boys are girls are 4x and 7x respectively, where, x must be a positive integer because number of boys and girls is always a positive integer. Then, the total number of students is
It means total number of students is multiply of 11.
Multiples of 11 are 11, 22, 33, 44, ... . So, multiples of 11 between 24 and 40 is 33.
Therefore, the total number of students in the class is 33.
Answer:
see explanation
Step-by-step explanation:
step 4 take the square root of both sides
= ±
x + 4 = ±
step 5 subtract 4 from both sides
x = - 4 ±
step 6 solve for x
x = - 4 - or x = - 4 +