If f(x+5)=x^2+kx+30 what is K equalled to?
Answers
ok so since it is 2nd degree, we do exponent
f(x)=x^2
f(x+5)=(x+5)^2=x^2+10x+25
we need 5 more
f(x)=x^2+5
f(x+5)=x^2+10x+25+5=x^2+10x+30
k=10
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y – (–19) = 25
a. –44
b. –6
c. 6
d. 44
Answers
First, simplify your brackets. / Your problem should look like:
Second, subtract 19 from both sides. / Your problem should look like:
Third, subtract 25 - 19 to get 6. / Your problem should look like:
Answer: C) y = 6
Answers
-(3/2) * 3
= -(9/2)
I hope this helped!! :D
so= 3/2×3
=9/2
=-4 and 1/2
=-4.5
Write a recursive formula for
Answers
Answer:
= 5
Step-by-step explanation:
The sequence has a common ratio r between consecutive terms, that is
r = 10 ÷ 2 = 50 ÷ 10 = 250 ÷ 50 = 5
Thus the sequence is geometric with recursive formula
= 5
Answers
Taking into account the definition of maximum, minimum and vertex of a quadratic function, it takes 12.5 seconds for the projectile to reach maximum height.
A quadratic function is defined in the form:
y= f (x) = ax² + bx + c
Every quadratic function has a maximum or a minimum, which is the vertex of the parabola. If the parabola has an upward concavity, the vertex corresponds to a minimum of the function; whereas if the parabola has concavity downwards, the vertex will be a maximum.
That is, if the coefficient a is positive the parabola is concave and the vertex will be a minimum of the function, while if a is negative the parabola will be convex and the vertex is a maximum.
The maximum or minimum is reached in
The maximum or minimum value of y is obtained by evaluating the function at xv, this is, f (xv).
In this case, the function is:
h(t)= -16t² + 400t
where t is the time in seconds
Being a = -16 and b = 400, the value of a is negative, so the vertex will be the maximum.
You want to know the time it takes for the projectile to reach the maximum height, that is, the maximum in t. That is, you must calculate t using the expression:
So:
Solving:
t= 12.5 seconds
It takes 12.5 seconds for the projectile to reach maximum height.
Learn more about cuadratic function with this examples:
Answer:
You can find the answer by using the formula x=-b/2a
Step-by-step explanation:
Remember the maximum height will be at the vertex. The x value of the vertex is your time, so use x=-b/2a. Then if it had also asked what the height was, you would plug that answer into your equation to find the y value of the vertex. Pretty sure your teacher is just asking you to find the x though:)
Answers
25 * 40% =
= 25 * 40/100 =
= 25 * 4/10 =
= 25 * 0,4 =
= 10
Another way is to find 1% of 25 and then multiply it by 40:
25 * 40% =
= (25 / 100) * 40 =
= 0,25 * 40 =
= 10
Answers
Hope this helps.