Try this solution:
Step-by-step explanation:
1) for zeros of the function: x²-6x-7=0; ⇒ x₁=7; x₂= -1.
2) for the vertex of the function: x₀= -b/2a, where a;b;c - numbers from ax²+bx+c=0 (from x²-6x-7=0).
x₀=6/2=3;
y₀= (4ac-b²)/4a; ⇒ y₀= -16.
It means, the coordinates of the vertex are (3;-16).
Follow the order of operation: PEMDAS
Parenthesis
Exponents (and roots)
Multiply
Divide
Add
Subtract
3 x (7-2) + 4
first do Parenthesis (as it shows up first)
7 - 2 = 5
Next, Multiply (the next one you have to do)
5 x 3 = 15
Finally, add
15 + 4 = 19
B. 19 is your answer
hope this helps
Answer:
1,500
Step-by-step explanation:
All you have to do is 50 times 30, that's 1,500.
Rate 5 stars please, thanks.
The inverse of division is multiplication.
