Answer:
c
Step-by-step explanation:
I think since am still in secondary school
it's should be (x-4)(x-4)
Answer:
24
Step-by-step explanation:
4! = 4*3*2*1 = 24
24 numbers can be formed
Answer: 3/2
Step-by-step explanation:
Slope is the coefficient in front of x, slope tells you how you move when plotting on a graph.
Answer:
b
Step-by-step explanation:
B. Y= (x - 10) ^ 4 - 81 OR y = x^4 - 20x +91
Answer: Mark has 28 marbles while Don has 85 marbles.
Step-by-step explanation:
Let x represent the number of marbles that Mark has.
Let y represent the number of marbles that Don has.
If Don has 1 more than 3 times the number of marbles Mark has, it means that
y = 3x + 1
The total number of marbles is 113. It means that
x + y = 113- - - - - - - - - - - - 1
Substituting y = 3x + 1 into equation 1, it becomes
x + 3x + 1 = 113
4x + 1 = 113
4x = 113 - 1 = 112
x = 112/4
x = 28
y = 3x + 1 = 3 × 28 + 1
y = 85
