Answer:
Step-by-step explanation:
So the number of questions in an exam varies with the number of minutes to take the exam.
For each question there are 5 minutes allotted.
Lets say that there are 'x' number of questions in the exam and 't' is the total time taken to finish the exam, in minutes. So the time taken to complete the exam would be
Therefore, the equation relating the time taken to complete the exam and the number of questions is given by:
So there are two variables in the equation, 't', and 'x':
t - time taken to complete the exam
x - number of questions on the exam
Answer:
(0,-2)
Step-by-step explanation:
Plug in 0 for x because the y intercept occurs where x=0
180-96= 84
That means 8x+12=84
84-12=72
That means 8x=72
72÷8=9
therefore X=9
Answer:
1: a
2: a
3: a
4: b
Step-by-step explanation:
a right triangle means the pythagorean theorem applies
a^2 + b^2 = c^2
is true for the triange
a and b are the two shorter sides and c is the long side
test with values to see if true
6^2 + 8^2 = 10^2
36 + 64 = 100
100 = 100
true, it is a right triangle
3 root^2 + 8 root^2 = 11 root^2
3 + 8 = 11
11=11
true, it is a right triangle
3^2+ 10 root^2 = 19 root^2
9 + 10 = 19
19=19
true, it is a right triangle
3^2 + 5^2 = 6^2
9+25= 36
34= 36
false not a right triangle
i hope this helps
