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3 years ago

12

I need help with question 2

1 answer:

Genrish500 [490]3 years ago

7 0

Answer:

Find every possibility in which she has 2 matching letters.

Step-by-step explanation:

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X - x-2/6 = x-7/3 + 2/3

elena-s [515]

X-x-2/6=x-7/3+2/3
-2/6+7/3-2/3=x
x= -2/6+5/3
x= 8/6
x= 4/3

3 0

3 years ago

Evaluate the function at the indicated values if possible. If an indicated value is not in the domain, say so.

goldfiish [28.3K]

Answer:

f(-7)=0.

f(2)=-9/5.

f(3) doesn't exist because 3 isn't in the domain of the function.

Step-by-step explanation:

$f(x)=\frac{x+7}{x^2-9}$ is the given function.

We are asked to find:

$f(-7)$

$f(2)$

$f(3)$ .

f(-7) means to replace x in the expression called f with -7:

Evaluate $\frac{x+7}{x^2-9}$ at $x=-7$

$\frac{(-7)+7}{(-7)^2-9}$

$\frac{0}{49-9}$

$\frac{0}{40}$

$0$

So f(-7)=0.

f(2) means to replace x in the expression called f with 2:

Evaluate $\frac{x+7}{x^2-9}$ at $x=2$

$\frac{2+7}{2^2-9}$

$\frac{9}{4-9}$

$\frac{9}{-5}$

$\frac{-9}{5}$

So f(2)=-9/5

f(3) means to replace x in the expression called f with 3:

Evaluate $\frac{x+7}{x^2-9}$ at $x=3$

$\frac{3+7}{3^2-9}$

$\frac{10}{9-9}$

$\frac{10}{0}$

Division by 0 is not allowed so 3 is not in the domain of our function.

5 0

3 years ago

2.) What is the mean number of boys in the three classes? What is the mean number of girls in the three classes?

Luden [163]

1.for boys is 13 and for girls it is 14 2. no mode 3. 13.5

3 0

3 years ago

Read 2 more answers

There are 15 blueberry muffins in a large basket. This represents 5/9 of all the muffins that are in the basket. The equation 5/

noname [10]

The answer is 27 muffins.

5/9m=15

9/5*5/9 which cancels each other out leaving just m.

Then you multiply 15 by 9/5 which gives you 135/5 which reduces to 27.

7 0

3 years ago

Read 2 more answers

Use the number line to ans

Amiraneli [1.4K]

I am pretty sure the answer is D because you add 4 to start and then you move back (-) 9 points

5 0

2 years ago