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Nina [5.8K]
3 years ago
6

Please someone help with work i dont get it

Mathematics
1 answer:
prohojiy [21]3 years ago
6 0
Hi! So, I don´t know the answers to this, but I think I know someone who might be able to help. Her username is IDONTLIKEUSERNAMES

Maybe message her?
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1. What is the period of the sinusoidal function? Please help thank you
Fittoniya [83]

The period will be the length for one cycle of the function.

answer: 10

5 0
3 years ago
The value 5 is an upper bound for the zeros of the function shown below.
Mice21 [21]

Answer:

The given statement that value 5 is an upper bound for the zeros of the function f(x) = x⁴ + x³ - 11x² - 9x + 18  will be true.

Step-by-step explanation:

Given

f\left(x\right)\:=\:x^2\:+\:x^3\:-\:11x^2\:-\:9x\:+\:18

We know the rational zeros theorem such as:

if x=c is a zero of the function f(x),

then f(c) = 0.

As the f\left(x\right)\:=\:x^2\:+\:x^3\:-\:11x^2\:-\:9x\:+\:18 is a polynomial of degree 4, hence it can not have more than 4 real zeros.

Let us put certain values in the function,

f(5) = 448, f(4) = 126, f(3) = 0, f(2) = -20,

f(1) = 0, f(0) = 18, f(-1) = 16, f(-2) = 0, f(-3) = 0

From the above calculation results, we determined that 4 zeros as

x = -3, -2, 1, and 3.

Hence, we can check that

f(x) = (x+3)(x+2)(x-1)(x-3)

Observe that,

for x > 3, f(x) increases rapidly, so there will be no zeros for x>3.

Therefore, the given statement that value 5 is an upper bound for the zeros of the function f(x) = x⁴ + x³ - 11x² - 9x + 18  will be true.

5 0
3 years ago
The area of a rectangle is 479.4 square feet. The width of the rectangle is 17 feet.
Katarina [22]

The answer is 28.2 because 479.4 ft. ÷ 17 ft. = 28.2 ft.

5 0
2 years ago
Yo!!!NEED HELP!!!!WILL GIVE BRAIN!!!!!!!
yawa3891 [41]
First, we are going to find if the function is odd or even. Remember that we can determine if a function is odd of even from its graph by looking at its ends; if both ends go to the same the direction, the function is even. If both ends go to opposite directions, the function is odd. At both ends, the graph of our function go towards the same direction, minus infinity, so we can conclude that our function is even.

Next, we are going to find the possible degree of our function. Remember that the possible degree of a function is the number of x-intercepts.
We can infer from our graph that the function intercepts the x-axis at least 6 times.

We can conclude that the correct answer is: even degrees of 6 or greater.
5 0
3 years ago
Tej ran 2000 metres in 15mins. what was his average speed in km/h?
Deffense [45]
His average speed in kilometers per hour is 8
8 0
3 years ago
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