Answer:
10
Step-by-step explanation:
The first equation should be the same with the second one, then we will have an infinite number of solutions of this system.
So if I multiply the first equation by 3, it'll be
6x-18y=3k
So if they should be the same, 30=3k
K=10
Answer:
560 students
Step-by-step explanation:
85/100=476
x= 476 x 100/85 x=560
Answer:
26 and 28.
Step-by-step explanation:
An even integer can be written as: for k an integer.
The sum of tow consecutive integers should equal 54:
Given that k is 13, the two consecutive integers are 26 and 28.
5m-14/(m+1)(m-1)
excluded values: 1,-1
Answer: (1, 8)
Step-by-step explanation:
<u>Substitute y = 3x + 5 into the equation 2x + 3y = 26:</u>
2x + 3(3x + 5) = 26
2x + 9x + 15 = 26
11x = 26 - 15
11x = 11
x = 1
<u>Substitute the value of x into the equation y = 3x + 5:</u>
y = 3(1) + 5 = 3 + 5 = 8