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ruslelena [56]
3 years ago
7

ATTENTION WORTH 50 POINTS PLEASE ANSWER ASAP TO RECIEVE BRAINLIEST

Mathematics
2 answers:
Novay_Z [31]3 years ago
5 0
Hi there!
Let's solve your problem step-by-step.
1. -f(x)
Since there is a negative in front of the f, it means a reflection over the x-axis. Therefore, the only description that would fit here would be f) f(x) is reflected over the x-axis.
2. f(x - 4)
The -4 on the inside of the parenthesis means that f(x) is being translated four units right. Hence, the only fitting description for this situation would be d) f(x) is translated 4 units right.
3. f(x) - 4
The -4 on the <u>outside</u> of the parenthesis means that the function f(x) is being translated vertically 4 units down. Therefore, the answer in this situation would be e) f(x) is translated 4 units down.
4. 4f(x)
The 4 in front of the f means a vertical stretch, as it is outside the parenthesis. It is a stretch because 4 is greater than 1. So, the answer to the problem here would be c) f(x) is vertically stretched by a factor of 4. 
Hope my answers helped you and have a great day!
VMariaS [17]3 years ago
5 0

Answer:

see below for details

Step-by-step explanation:

1. -f(x) means everything above the x-axis will be down n vice versa. so its like a mirror image. ans is f. f(x) is reflected across the x-axis.

2. f(x-4) means for the original x, x-4 will be like move everything to its right by 4. ans is d. f(x) is translated 4 units right.

3. f(x)-4 means the -4 is outside so it applies to the function value and everything moves down by 4. ans is e. f(x) is translated 4 units down

4. 4f(x) means all function values are multiplied by 4 as in magnified. ans is c. f(x) is vertically stretched by 4.


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The ___________ of a lens or mirror is a rotational symmetry axis of the surfaces.
densk [106]

Answer:

Optical axis

Step-by-step explanation:

Optical axis is the rotational symmetry axis of the surfaces.

A line with a certain degree of rotational symmetry is called as the optical axis in an optical system.

It is the straight line that passes through the geometric center of the lens and joins two curvature centers of its surfaces.

It is also called as the principal axis.

5 0
4 years ago
What is the equation of the line that represents the horizontal asymptote of the function f(x)=25,000(1+0.025)^(x)?
posledela

Answer:

The answer is below

Step-by-step explanation:

The horizontal asymptote of a function f(x) is gotten by finding the limit as x ⇒ ∞ or x ⇒ -∞. If the limit gives you a finite value, then your asymptote is at that point.

\lim_{x \to \infty} f(x)=A\\\\or\\\\ \lim_{x \to -\infty} f(x)=A\\\\where\ A\ is\ a\ finite\ value.\\\\Given\ that \ f(x) =25000(1+0.025)^x\\\\ \lim_{x \to \infty} f(x)= \lim_{x \to \infty} [25000(1+0.025)^x]= \lim_{x \to \infty} [25000(1.025)^x]\\=25000 \lim_{x \to \infty} [(1.025)^x]=25000(\infty)=\infty\\\\ \lim_{x \to -\infty} f(x)= \lim_{x \to -\infty} [25000(1+0.025)^x]= \lim_{x \to -\infty} [25000(1.025)^x]\\=25000 \lim_{x \to -\infty} [(1.025)^x]=25000(0)=0\\\\

Since\  \lim_{x \to -\infty} f(x)=0\ is\ a\ finite\ value,hence:\\\\Hence\ the\ horizontal\ asymtotes\ is\ at\ y=0

5 0
3 years ago
Alan is comparing the cost of a fresh lobster dinner at two different restaurants. The first
Pepsi [2]

Good evening ,

Answer:

The weight : 29 pound

Alan would pay for his dinner : $130

Step-by-step explanation:

Let x represent the weight of the lobster

the cost of the dinner at restaurant 1 is 4x + 14  

the cost of the dinner at restaurant 2 is 3x + 43

Now ,we have to solve the equation :  4x + 14 = 3x + 43

4x + 14 = 3x + 43

⇔ x = 43 - 14

⇔ x = 29

In this case Alan would pay the same amount for his dinner at any restaurant:

the price = 4×(29)+14 = 130

               = 3×(29)+43 = 130.

:)

4 0
3 years ago
A student flips a coin 100 times. The coin lands on heads 52 times.
nata0808 [166]

The experimental probability of landing on heads is the same as the theoretical probability of landing on heads.

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107.2×.26= 27.87 gallons
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3 0
3 years ago
Read 2 more answers
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