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Vika [28.1K]
2 years ago
12

Work out the area of this circle.

Mathematics
2 answers:
AveGali [126]2 years ago
4 0
The correct answer is 36pi.
salantis [7]2 years ago
3 0
Area =Pi r to the power of 2
=Pi6 to the power of 2
Answer is 113.0 (rounded to the 1 decimal place)
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2. Rainey graphed a function with exponential growth and an initial value of 15. Which of the following could represent the equa
Mars2501 [29]

Exponential equation are functions defined by y =ab^x

The equation that could represent Rainey graph must take the form y =15b^x

<h3>How to determine the equation</h3>

An exponential equation is represented as:

y =ab^x

Where:

  • a represents the initial value
  • b represents the rate

The initial value (a) is 15.

So, the equation becomes

y =15b^x

The graph is not given;

So, the equation cannot be determined.

Assume that the rate is 2.

Then the function would be: y =15(2)^x

Read more about exponential functions at:

brainly.com/question/11464095

6 0
2 years ago
Mini staw<br> D:<br> R:<br> what is the domain and range
IgorC [24]

The entire range of independent variable values is the domain of a function.

After substituting the domain, the range of just a function is the entire set of all possible values for the dependent variable (often y).

What is domain and range?

  • The collection of all x-values that can cause the function to "work" and produce actual y-values is known as the domain.
  • The range is the set of y-values that are produced when all the conceivable x-values are substituted.

The entire range of independent variable values is the domain of a function.

Keep these things in mind when locating the domain:

  1. A fraction's denominator (bottom) cannot be 0.
  2. In this section, the integer following a square root symbol must be positive.

After substituting the domain, the range of just a function is the entire set of all possible values for the dependent variable (often y).

The variety of potential y-values makes up a function's range (minimum y-value to maximum y-value)

  1. To observe what happens, substitute several x-values into the expression for y.
  2. Be sure to search for the least and highest y values.

Learn more about Domain and Range here:

brainly.com/question/10197594

#SPJ9

3 0
2 years ago
She didn't see him either. (into affirmative)​
Scilla [17]

Answer:

i Don't know this but other's can help you.

3 0
3 years ago
Which statement is true about this quadratic equation?
Masteriza [31]

Answer:

There are two real roots because b²>4ac

in the equation, b²= 9² = 81.

4ac = 4×-4×-12= 72

8 0
3 years ago
Ieda and Thanh both offer piano lessons. Ieda charges an initial fee of $8.50 and an hourly rate of $11.00. Thanh charges an ini
Verizon [17]

Answer:

after 3 hours of instruction.

Step-by-step explanation:

First, start by setting up the equation.

Leda charges an initial fee, meaning this fee is only going to be one time. However, there is an hourly rate of 11. Since we do not know how many hours these piano lessons are going to last, we put a variable (I will use x), after this number.

The initial fee is 8.50. There needs to be a variable after 11 because that is the number we don't know.

The equation for Leda's lessons are <em>8.50+11.00x. </em>

Now, we need to find out what the equation for Thanh's lessons are going to be, because we're going to be setting both equations equal to each other to find out when they cost the same. At the moment both equal each other, is when they are the same amount.

Thanh's equation also has an intial fee and an hourly rate. So, the equation will be

<em>10.00+10.50x. </em>

Now we solve.

<em>8.50+11.00x = 10.00+10.50x </em>

First, subtract from both sides. We will do the numbers without variables first.

<em>8.50+11.00x = 10.00+10.50x </em>

<em>-8.50               -8.50 </em>

<em>____________________</em>

<em>0     +11.00x =   1.50 +10.50x</em>

Then, subtract the x's. (taking away the zero because it is equivalent to nothing)

<em>11.00x =   1.50 +10.50x</em>

<em>- 10.50x            -10.50x</em>

<em>__________________</em>

<em>0.50x = 1.50 </em>

Lastly, to find out the answer, we divide.

1.50/0.50= 3.

<u>To check your answer, you can plug into the original equation. </u>

<em>8.50+11.00 times 3 = 10.00+10.50 times 3 </em>

Both sides equal 41.50, meaning they are equal to each other!

7 0
3 years ago
Read 2 more answers
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