Answer:
2
Step-by-step explanation:
consider the two points. Gradient=change in y/change in x. So 4/2=2
Let's call the younger student's age A and the older student's age B. The teacher's age will be T.
B = 2A
T = 5B
T+5 = 5(A+5)
Simplify the last equation.
T+5 = 5A+25
T = 5A+20
Now we have two equations solved for T, so we can set them equal to each other.
5B = 5A + 20
We can plug 2A in for B
5(2A) = 5A + 20
10A = 5A + 20
5A = 20
A = 4
To find T, we plug 4 in for A in T = 5A + 20
T = 5(4) + 20
T = 40
The answer is 40 years old.
Answer:
6 different primes.
3, 7, 13, 29, 31 , 89.
Step-by-step explanation:
Try dividing by primes starting with 3:
3 ) 65529009
3 ) 21843003
7) 7281001
13) 1040143
29) 80011
31 ( 2759
89. 89 is a prime number.
How you find those is you just divide the rate and what ever answer you get you add a one on the bottom
Example: 1. 4/8
2.4÷8= 2
3. 2/1
37:53
Step-by-step explanation:
Step 1 :
Given
Number of people choosing Juice A = 37
Number of people choosing Juice B = 32
Number of people choosing Juice C = 21
We need to find the odds in favor of choosing a person who chooses juice A
Step 2 :
Here the number of success is the number of people choosing juice A = 37
Number of failures is the number of the people not choosing juice A = Number of people choosing juice B + Number of people choosing juice C = 32+21 = 53
Hence the odds in favor of choosing a person who chooses juice A is 37:53
