Answer:
Marco's age is 7 years old
Step-by-step explanation:
Let
x ----> Marco's age
y ----> Paolo's age
we know that
----> 
----> equation A
----> equation B
substitute equation A in equation B
Solve the quadratic equation
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
so
substitute in the formula
Remember that the solution cannot be a negative number
so
The solution is x=7
therefore
Marco's age is 7 years old
Answer:
y+6=-3/4(x-2)
Step-by-step explanation:
y-(-6)=-3/4(x-2)
y+6=-3/4(x-2)
Answer:
a) Triangle.
b) Triangle.
c) The area is 110 cm.
Step-by-step explanation:
The shape is given because it is a cross section of a Pyramid which we can see shaded in grey.
The area is given by the base times hight devided by 2. So 10cm * 22cm/2= 110cm.
Hope this helped ;)
Answer:
For 3: A,D
For 4: I think A
Step-by-step explanation:
3: the reason is because as it approaches infinity, y is infinity
4. as c increases, y increases the same amount
