Which of the following situations can be modeled with a periodic function?

Answer:

C

Step-by-step explanation:

When talking about multiplication two negatives do, in fact, make a positive but if there is only one negative in the equation, the product(answer) will be negative. Therefore, C 31(-10)=-310 is the only problem that is correct.

Answer:

C.[tex]31\left(-10\right)=-310[/tex]

Step-by-step explanation:

[tex]31\left(-10\right)[/tex]

[tex]\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a[/tex]

[tex]=-31\cdot \:10[/tex]

[tex]\mathrm{Multiply\:the\:numbers:}\:31\cdot \:10=310[/tex]

[tex]=-310[/tex]

Answer:

C

Step-by-step explanation:

-18x+2y>=-13

2y>= -13+18x

y>= -6.5+9x

Answer:

x² + 5x + 6

Step-by-step explanation:

x × x + 2x + 3x + 6

= x² + 5x + 6

Answer:

1.5 years

Step-by-step explanation:

Simple Interest I = PRT

Principal = 2500, Rate R= 8.5%, SI = 318.75, T = ?

Now, substituting the above value

318.75 = 2500*0.085 * T

T = 318.75 / 2500*0.085 years

T = 318.75 / 2500*0.085 years

T = 318.75 / 212.5 years

T = 1.5 years

Answer:

the graph should be of the line y=5x

Step-by-step explanation:

the x axis should be labeled hours and the y axis should be labeled amount earned or dollars

the coordinates on the graph should be

(1,5) (2,10) (3,15) (4,20) (5,25) (6,30)

I cannot see the answer choices but I hope this information helps you answer the question

Answer:

Step-by-step explanation:

AD = DC and BE=EC ⇒

DE = 1/2AB

DE = 4*9 + 1 = 36 + 1 = 37

AD = DC

BE = EC

It gives that 2(DE) = AB

The length of DE.

According to the question,

2(DE) = AB

By putting the respected values, we get

2( 4x + 1 ) = 11x - 25

or, 8x + 2 = 11x - 25

or, 25 + 2 = 11x - 8x ( transposition method )

or, 27 = 3x

or, x = 27/3 = 9

The value of x is 9.

DE = 4(9) + 1 = 36 + 1 = 37

DE = 37

Answer:

4

Step-by-step explanation:

As, the measure of one congruent side is = 2x + 3

So, bc there are 2 congrent sides, =( 2x + 3) + (2x +3) = 4x + 6

Now perimeter= the length of the 2 sides + third side

Perimeter = (4x + 6) + (7x) = 50 cm

So, 11x + 6 = 50

So, 11x = 50 - 6 = 44

11x = 44

x = 44/11

x = 4cm.

Answer:

y=-4x+2

Step-by-step explanation:

Answer:

The answer C  earn it

Answer:

Step-by-step explanation:

f(x) = a(x - h)² + k      - the  vertex form of the equation of the parabola with vertex (h, k)

[tex]f(x) = -16x^2+ 64x + 80\\\\f(x) = -16(x^2- 4x) + 80\\\\f(x) = -16(\underline {x^2-2\cdot2x\cdot2+2^2}-2^2) + 80\\\\f(x) = -16\big[(x-2)^2-4\big] + 80\\\\f(x) = -16(x-2)^2+64 + 80\\\\\bold{f(x)=-16(x-2)^2+124\quad\implies\quad h=2\,,\quad k=124}[/tex]

The vertex is (2, 124)

Answer:

The percentage decrease in the number candid student pictures for the yearbook from 2015 to 2016 is approximately 9.3 percent

Step-by-step explanation:

The given data can be presented as follows

Year           [tex]{}[/tex]                      Number of Photos

2015           [tex]{}[/tex]                      236

2016           [tex]{}[/tex]                      214

The percentage decrease in the number of candid pictures is give by the following formula

[tex]Percentage \ Decrease = \dfrac{Original \ Value- New \ Value}{Original \ Value} \times 100[/tex]

Where;

Original value for the number of pictures = 236

New value for the number of pictures = 214

Substituting the values into the equation for the percentage decrease gives;

[tex]Percentage \ Decrease = \dfrac{236- 214}{236} \times 100 = \dfrac{550}{59} \ percent\approx 9.3 \%[/tex]

The percentage decrease is approximately 9.3 percent.

Answer:

The answer is 9.3%.

Answer:

x=5

Step-by-step explanation:

set up the equation:

x-2 = 3

solve

x = 5

Answer:

x=1

Step-by-step explanation:

you put 3 in for x in the equation

Answer:

3

Step-by-step explanation:

3 is larger than 2

The x-intercept of the graph is given as (-2, 0)

Given the equation of a line expressed as:

y + 2 = 2(x+3)

We are to find the x-intercept of the line. The x-intercept occur at the point where y = 0

Substituting y = 0 into the equation will give;

y + 2 = 2(x+3)

0 + 2 = 2(x+3)

2 = 2x + 6

2x = -4

x = -2

Hence the x-intercept of the graph is given as (-2, 0)

Learn more on intercept here; https://brainly.com/question/24212383

Answer:

x = 2, y = -1/3

Step-by-step explanation:

I'm pretty sure the question is asking for the values of x and y. By finding these values you will need to use elimination.

Equations given:

5x + 3y = 9

2x - 3y = 5

To find x:

5x + 3y + 2x - 3y = 9 + 5  (add to eliminate y to solve for x)

7x = 14

x = 2

To find y:

5(2) + 3y = 9

10 + 3y = 9

3y = -1

y = -1/3

Therefore, x = 2 and y = -1/3

Answer:

51.6 is the mesurment of angle A

Step-by-step explanation:

Answer:

63/5 in improper form and 12 and 3/5 in mixed form

Step-by-step explanation:

f(x) = 2/5x + 11

Substitute in value of x for the equation

f(4) = 2/5(4) + 11

f(4) = 8/5 + 11

f(4) = 8/5 + 55/5

f(4) = 63/5 or 12 and 3/5

So, the answer should be 63/5 in improper form and 12 and 3/5 in mixed form.

Answer:

Step-by-step explanation:

f(x) = [tex]\frac{2}{5}x + 11[/tex]

f(4) = [tex]\frac{2}{5}*4 +11\\[/tex]

     [tex]=\frac{8}{5}+11\\\\=\frac{8}{5}+\frac{11*5}{1*5}\\\\=\frac{8}{5} + \frac{55}{5}\\\\=\frac{63}{5}\\\\=12\frac{3}{5}[/tex]

Answer:

Relation 1: Not a Function

Relation 2: Not a Function

Relation 3: Function

Relation 4: Not a Function

Explanation:

There can only be one output (what you get out of it) for each input (what you put into the function) in a function.

Answer:

can you explain your question

Step-by-step explanation:

Answer:

A. -8

B. -8

C. 20

Step-by-step explanation:

Given :

To find the product of 183.5 and 10², move the decimal point in 183.5 _____ places to the right because 10² has _____ zeros.

To Find :

We need to fill the spaces.

Solution :

We know, when number with positive power of 10 is multiplied with another number we need to shift the number to the right hand side by the number of zeroes.

So, To find the product of 183.5 and 10², move the decimal point in 183.5 to right places to the right because 10² has two zeros.

Hence, this is the required solution.

Answer:

10

Step-by-step explanation:

1 2 3 4 5

1 shakes hands with 2,3,4,5

2 shakes hands with 3,4,5 but not with 1 because they already shook hands once

similarly, 3 only shakes hands with 4 and 5, same reason as abov

4 with 5 only, same reason

Answer:

10

Step-by-step explanation:

Let the people be represented by numbers (1,2,3,4,5)

-- now 1 shakes hands with the remaining 4, (i.e 2,3,4,5)

-- 2 shakes hands with the remaining 3 (i.e 3,4,5) as it has already shaken hands with 1

-- 3 shakes hands with the remaining two  and so on

If you recognize the pattern there are 4+3+2+1 handshakes that have taken place, or 10 handshakes

Answer:

20 miles

Step-by-step explanation:

hope this helps

Answer:

20

Step-by-step explanation:

60-40=20

Answer:

415.8

Step-by-step explanation:

8.40 x 40 is 336$. plus 7 x 4.20 (half) is 29.4$ and plus 8.40 x 2 (double time) is 16.8 x 3 which is 50.4$. you add these up and he earns 415.8$ (hopefully)

Answer:20%

Step-by-step explanation:216-180=36. 36/180=.20

Answer:

p = 5

Step-by-step explanation:

3 + p = 8

-3        -3

p = 5

I hope this was helpful! <3

Could I get brainliest?