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).
Answer:
Hi, There! my name is Jay And I'm here to help!
<h2>Question</h2>
Two times a number plus one is at least seven
<h2>Answer</h2>
x ≥ 3 would be correct
- <em>all values of x which are 3 or above can be used</em>
Step-by-step explanation:
For this Question, your going to use Easy multiplication and Addition Skills
your equation is going to look like this ↓
So we have to determine what x Is
Since we have figured out what is Time to Add it all together
Therefore, I hope this helps!
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Take Care! ❁
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Answer:
40 cm
Step-by-step explanation:
<em>Diagonal side: use pythagorean</em>
8^2 + 6^2 = 10^2 => the side is equal to 10
add up w/ 3 others side is 8, 8 and 14
So it is 10 + 8 + 8 + 14 = 40
Answer:
Rate=9.05%
Step-by-step explanation:
Let P represent the Principal ,t the time = 8 years and r be the rate of interest.
It is given money doubles in 8 years so A=2P.
The compound interest is given by the formula :
Substituting the values we have:
Dividing both sides by P :
1.0905-1=r
r=0.09050
r=9.05%