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Ostrovityanka [42]
3 years ago
9

Consider the function f(x) = -

Mathematics
2 answers:
Step2247 [10]3 years ago
6 0

Answer: B!

Step-by-step explanation:

mixas84 [53]3 years ago
4 0

Answer:

B.

Step-by-step explanation:

Got it correct on e2020

You might be interested in
triangle has sides measuring 2 inches and 7 inches If x represents the length in inches of the third side which inequality gives
il63 [147K]
We know that
The sum of the lengths of any two sides of a triangle is greater than the length of the third side (<span>Triangle Inequality Theorem)
so
inequality 1
</span>(2+7) \ \textgreater \  x \\  9 \ \textgreater \  x \\  x \ \textless \  9 in
<span>
inequality 2
</span>(x+2) \ \textgreater \  7 \\  x \ \textgreater \  7-2 \\  x \ \textgreater \  5 in
<span>
the answer is
</span>5 in  \ \textless \ x \ \textless \ 9 in<span>
</span>
6 0
3 years ago
Which equation is y = 9x2 + 9x – 1 rewritten in vertex form?
Anastasy [175]

Answer:

y = 9(x +\frac{1}{2}) ^ 2 -\frac{13}{4}

Step-by-step explanation:

An equation in the vertex form is written as

y = a (x-h) + k

Where the point (h, k) is the vertex of the equation.

 

For an equation in the form ax ^ 2 + bx + c the x coordinate of the vertex is defined as

x = -\frac{b}{2a}

In this case we have the equation y = 9x^2 + 9x - 1.

Where

a = 9\\\\b = 9\\\\c = -1

Then the x coordinate of the vertex is:

x = -\frac{9}{2(9)}\\\\x = -\frac{9}{18}\\\\x = -\frac{1}{2}

The y coordinate of the vertex is replacing the value of x = -\frac{1}{2} in the function

y = 9 (-0.5) ^ 2 + 9 (-0.5) -1\\\\y = -\frac{13}{4}

Then the vertex is:

(-\frac{1}{2}, -\frac{13}{4})

Therefore The encuacion excrita in the form of vertice is:

y = a(x +\frac{1}{2}) ^ 2 -\frac{13}{4}

To find the coefficient a we substitute a point that belongs to the function y = 9x^2 + 9x - 1

The point (0, -1) belongs to the function. Thus.

-1 = a(0 + \frac{1}{2}) ^ 2 -\frac{13}{4}

-1 = a(\frac{1}{4}) -\frac{13}{4}\\\\a = \frac{-1 +\frac{13}{4}}{\frac{1}{4}}\\\\a = 9

<em>Then the written function in the form of vertice is</em>

y = 9(x +\frac{1}{2}) ^ 2 -\frac{13}{4}

7 0
3 years ago
2. You deposit $1200 into a bank account. Every year that accounts increase by 15 %.
lord [1]

Answer:

Exponential Growth, 1200(1.15)

Step-by-step explanation:

It is a Growth function because it is "increasing" yearly. The equation is multiplying with 1.15 because when it is increasing, you need to add 1 to the percentage rate.

7 0
3 years ago
2. What is the relative frequency of a student choosing the aquarium? Give your
Andreyy89

Answer:

What is the relative frequency of a student choosing the aquarium? Give your

answer as a decimal rounded to the nearest hundredth. (The hundreths place is two

decimal places. For example, .9543 would be rounded to .95)

Step-by-step explanation:

5 0
3 years ago
Can someone help me out :P
trapecia [35]

Answer:

781 I think.

5 0
3 years ago
Read 2 more answers
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