Answer:
D
A right triangle is a triangle that has one 90 degree angle, so looking at the options i would say D
Step-by-step explanation:
Answer:
(a) 
(c) 
Step-by-step explanation:
(a) To find verify the answer we need to multiplying the equation 
Thus, this statement is true.
(b) To find verify the answer we need to multiplying the equation 
Hence, the given statement is false.
(c) To find verify the answer we need to multiplying the equation 
Hence, the given statement is true.
(d) To find verify the answer we need to multiplying the equation
Hence, the given statement is false.
Answer:
I honestly don't know sry
Step-by-step explanation:
They will have the same amount of money after 7 weeks.
We first set these equal to each other:
36+4x=x²+15
We want to gather all of the variables on one side. Subtract 4x from both sides:
36+4x-4x=x²+15-4x
36=x²-4x+15
We want the equation to be equal to 0 to solve it, so subtract 36 from both sides:
36-36=x²-4x+15-36
0=x²-4x-21
We can factor this expression. We want factors of -21 that sum to -4; -7(3)=-21 and -7+3=-4:
0=(x-7)(x+3)
Using the zero product property, we know that x-7=0 or x+3=0; this means x=7 or x=-3. Since a negative number of weeks makes no sense, the answer is 7 weeks.
