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3 years ago

8

What is 1.4335 in standard form

1 answer:

stich3 [128]3 years ago

8 0

Answer:

-1.4335

Step-by-step explanation:

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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

A circle has a diameter of 10 centimeters. of a sector with a central angle of 50 degrees is cut out, what is the area of this s

kramer

Answer:

D. 10.91 square centimeters

Step-by-step explanation:

Area of a sector of a circle = $\frac{\theta}{360}\\$ $\pi$ $r^{2}$

where $\theta = 50^{o} C$

radius (r) = half of diameter = 10/2 = 5 cm

Area = $\frac{50}{360} * \frac{22}{7} * 5^{2}$

= 10.91 $cm^{2}$

8 0

3 years ago

Use the drawing tool(s) to form the correct answer on the provided number line.

seropon [69]

Answer:

im in the ghetto ratatatattaa

Step-by-step explanation:

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3 years ago

The length of a eectangle is 3/2 u oys greater then its width.if the width is w, which expression gives the perimeter

svet-max [94.6K]

Answer: The expression of perimeter will be

$3+4w$

Step-by-step explanation:

Since we have given that

Let the width of rectangle be w

Let the length of rectangle is given by

$w+\frac{3}{2}$

As we know the formula for "Perimeter of rectangle":

$\text{Perimeter of rectangle}=2(L+B)\\\\\text{Perimeter of rectangle}=2(\frac{3}{2}+w+w)\\\\\text{Perimeter of rectangle}=2(\frac{3}{2}+2w)\\\\\text{Perimeter of rectangle}=3+4w$

Hence, the expression of perimeter will be

$3+4w$

4 0

3 years ago

Hey guyss I need help with 3 of these questions :)

kenny6666 [7]

If there is a negative exponent, just flip them over for that exponent to be positive. Example: x^-3 would be 1/x³. Thus,

1. 2b²/5a^4
2. (5a³n)³
Distribute the exponent 3 to each term.
5³a^9n³ = 125a^9n³
3. (x^n+5/y)²
Distribute the exponent 2 to each term.
x^(2n) + 5²/y²
x^(2n) + 25/y²

6 0

3 years ago