The period of a pendulum is the time the pendulum takes to swing back and forth. The function L=0.81t^2 relates the length L in feet of a pendulum to the time t in seconds that it takes to swing back and forth. A convention center has a pendulum that is 110 feet long. Find the period.

Answers

Answer 1

Answer:

11.73seconds

Step-by-step explanation:

Given the expression of length L in feet of a pendulum to the time t in seconds that it takes to swing back and forth modeled as;

L = 0.81t²

Given

Length of the pendulum = 110feet

Required

Time (period)

Substitute the given value into the formula

L = 0.81t²

110 = 0.8t²

t² = 110/0.8

t² =137.5

t = √137.5

t = 11.73seconds

Hence the period is 11.73seconds


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Answer:

the answer is 42 if im right mark brainliest

what the slope to this


(19,-2)(-11-10)​

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Answer:

4/15

Step-by-step explanation:

14 out of 22 students in 1st period passed the math assignment. What is the ratio of the students who passed to those who did NOT pass?

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Answer:

14:8

Step-by-step explanation:

x+9;x=6

find the value of why for the given value of x

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Answer:

-5

Step-by-step explanation:

Answer:

15

Step-by-step explanation:

x+9=6 when x=6

6+9=15

15=15

What is the value of x in the equation 2.5 x + 10 = x minus 0.5?
–7
–3
3
7

Answers

Your answer is x = - 7

Answer:

X = -7

Step-by-step explanation:

2.5x +10 =  x -0.5

Cancel The 1x (x)

1.5x + 10 = (-0.5)

Cancel out the 10

1.5x = (-10.5)

divide by 1.5 to get your answer....

please give Brainliest

у = 3х – 7
у = 3х + 1

Answers

What are you doing if your graphing the points for the first one you start at -7 on the y axis and go up 3 and over tho the left by 1

For the second one you start at 1 on the y axis and go up 3 over the right 1

Find the amount of simple interest that $400 would earn at 8% per year by the end of 3 years.​

Answers

Answer:

400 times 8%= 32 times 3=96

Step-by-step explanation:

I will mark brainiest please please answer 30 points

If m 2=42 and m angle 6=126 , what is m angle 4?


Tell me why to make sure your right

Answers

Answer:

B

Step-by-step explanation:

because of the of the different angles you would calculate that and subtract or add i think

Find the slope of the line between the points (-1, 3) and (5, 11).
Is the point (-4, -1) on the same line as the other two points? Use slope to justify your answer.

Answers

Answer:

Step-by-step explanation:

[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}\\\\\left(x_1,\:y_1\right)=\left(-1,\:3\right),\:\\\left(x_2,\:y_2\right)=\left(5,\:11\right)\\\\m=\frac{11-3}{5-\left(-1\right)}\\\\m =\frac{11-3}{5+1}\\\\m=\frac{8}{6}\\\\Simplify\\\\m=\frac{11-3}{5-\left(-1\right)}[/tex]

Yes  (-4, -1)  is on the same line with the other wo points.

[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}\\\\\\\mathrm{Slope\:}\left(-4,\:-1\right),\:\left(5,\:11\right)\\\left(x_1,\:y_1\right)=\left(-4,\:-1\right),\:\\\left(x_2,\:y_2\right)=\left(5,\:11\right)\\\\m=\frac{11-\left(-1\right)}{5-\left(-4\right)}\\\\Simplify\\m=\frac{4}{3}\\\\\mathrm{Slope\:}\left(-1,\:3\right),\:\left(-4,\:-1\right)\\\\\left(x_1,\:y_1\right)=\left(-1,\:3\right),\:\\\left(x_2,\:y_2\right)=\left(-4,\:-1\right)\\\\m=\frac{-1-3}{-4-\left(-1\right)}\\\\Simplify\\\\m=\frac{4}{3}[/tex]

One angle of a right triangle measures 61°. What is the measure of the other acute angle?

Answers

The other answer is 29 degrees because 90 for right angle and 61 for one angle is 151 then subtract 180 (for the Triangle Sum theory) minus 151 then it’s 29 degrees

Which answer choice shows 8.127 rounded to the nearest half?
A. 7
B. 7.5
C. 8
D. 8.5

Answers

it is C its the nearest

Answer:

I hope you were right about it being C. because I am on a test

:Thx

I need an answer ASAP -

Martha is spending the afternoon at the bowling alley with friends. She rents shoes for $5 and must pay $4 per hour to participate. Represent this situation with a linear equation.

Answers-
a. y=5x+4
b. y- 4x+5
c. y= 4x
d. y=5x

Answers

Answer:

y=4x+5

Step-by-step explanation:

x= the number of hours

y= total number of money

4x means each hour = 4 dollars

5 = the rent of the shoes

Therefore, y = 4x + 5

Tbh, Brainley community sucks because people don't actually help you with what you need help with they are just thirsty or points ..and for what? Just to ask MORE questions. So basically everyone is asking questions but only a few are giving back to the community by answering. And for that reason, I am out.

Answers

Answer:

honestly i felt that lol people on here can be wack

Answer:

I agree.

Step-by-step explanation:

20 points to answer and extra if it’s right!

Answers

Answer:

C

Step-by-step explanation:

Money lost. Keyword "lost". Ages, people, and height can't be negative. ( I guess people can be negative mentally but not physically)

ILL GIVE BRAINLY THING

Answers

Answer:

the slope is -4/3

Step-by-step explanation:

you can either use the graph or algebra to find the slope.

to use the graph, simply count how many spaces up/down and to the left/right that you go.

to use algebra, take the coordinates of your two points and do (y2-y1)/(x2-x1).

Does the table represent a function? Then represent
the relationship using words, an equation, and a
graph.

I need crucial help!

Answers

Answer:

This table represents a function

y is 1.3 times x

y=1.3x

Step-by-step explanation:

Which set of ordered pairs represents y as a function of x?
PLEASE HELP 15 POINTS OR BRAINLIEST

Answers

Answer:

A

Step-by-step explanation:

Answer:

i might be wrong and i am so sorry if i am but i think that it is D

Step-by-step explanation:

A bus travels at a speed of 40 miles per hour and reaches Hogville in 40 minutes. If a cab takes 35 minutes to reach the same spot, determine the speed at which it traveled.

Answers

Answer:

45.7miles per hour

Step-by-step explanation:

40mins = 2/3 hour

the bus travelled (2/3 x 40) miles = 80/3 miles

the cab took 35 mins (which is 7/12 hour) so it's speed is (80/3)/(7/12) miles/hour = 45.714 miles/hour (5 s.f.)

On Monday, Florencia's hair was h centimeters long. She got a haircut on Tuesday, so her hair was only 75% percent of the length it was on Monday.
Which expressions could represent how many centimeters long Florencia's hair was after the haircut?

Answers

What is h?

maybe 25%

i hope it helped you sorry if it didn't

Answer:

25%

Step-by-step explanation:

Stephanie's cable company charges $29.95 per month, plus $3.00 for each on-demand
movie rented. If Stephanie's cable bill last month was $44.95, how many on-demand
movies did she rent last month?



Pls help me plssssssss

Answers

Answer:

5

Step-by-step explanation:

44.95-29.95=15/3=5

pula pays 419.92 for 2.4 pounds of walnuts .What is the price per pounof waluts ?

Answers

174.97$ is the answer.
How I did it:
419.92 / 2.4 = 174.966 which rounds to 174.97$

Simplify the following expression. (19x + 4y) + (49x + 32y)

Answers

Answer: 68x + 36y

Step-by-step explanation:

Combine Like Terms:

= 19x + 4y + 49x + 32y

= (19x + 49x) + (4y + 32y)

= 68x + 36y

Hope this helped you!

Answer:

68x + 36y

Step-by-step explanation:

You can compeletely get rid of the parenthesis because it is addition through and thorough.

You have 19x + 4y + 49x + 32y

You can combine like terms to get

19x +49x which is 68x

and

4y + 32y which is 36y

You now have 68 + 36y which cannot be simplified anymore because the variables are different.

Hope this helps!

7thh grade math help me plzzzzzzz

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Answer:

aren't sufficiently brief

Step-by-step explanation:

The irony is when he was supposed to write a "brief" summary

solve for X

x=2
2+ X = _______

Answers

Answer:

2+2=4

Step-by-step explanation:

If x=2, then your new equation will be 2+2 which is =4. So your answer will be 4.

plz answer all corectly will mark brainlest plz answer within 1 hour

the last one is to reward you for your help

Answers

Answer:

for the first one I got y=-2x-2 the second part i got y=-x-1 or -1x-y-1=0  Correct me if I am wrong

Step-by-step explanation:

Use the slope formula

-4-4 =-8

  /               =-2

1 - -3=4

2. The second part use this formula y-y1=m(x-x1)

     y--4=-1(x-3)

y+4=-x+3

  -4      -4

y+0=-x-1

 y=-x-1      or -1x-y-1=0    I am not sure  

Evaluate the following expression if x=12, y=6, and z=-4

Answers

Answer:

wheres the expression

Step-by-step explanation:

En cierto cultivo, inicialmente había 1000 amebas que se reproducen por biparticion cada día ¿Cuántas amebas habrá al cabo de 30 días después que se inició el cultivo ?

Answers

Answer: 1,073,741,824,000 amebas

Step-by-step explanation:

Bipartición significa que la población de amebas se duplica cada día.

Entonces si inicialmente hay 1000, después de un día van a haber:

2*1000.

Después del segundo día se vuelven a duplicar, entonces van a haber:

2*(2*1000) = (2^2)*1000

Después del tercer día, lo mismo:

2*(2^2)*1000 = (2^3)*1000.

A esta altura ya se puede ver el patrón, podemos concluir que después de N días, la población de amebas va a ser:

P(N) = (2^N)*1000.

Entonces respondiendo a la pregunta:

¿Cuántas amebas habrá al cabo de 30 días después que se inició el cultivo?

Tenemos que tomar N = 30

P(30) = (2^30)*1000 = 1,073,741,824,000 amebas

express 1 as a percent

Answers

Answer:1 the answer would be 1%

Step-by-step explanation:

Answer:

1%

Step-by-step explanation:

divide 1 by 100 then get the answer

The science center has 200 people in attendance on Monday. The center expects Saturday’s attendance to be 140 percent of Monday’s attendance. Natasha is trying to figure out how many people will be in attendance. Her work is shown below. StartFraction part Over whole EndFraction = StartFraction 140 Over 100 EndFraction StartFraction 140 divided by 2 Over 100 times 2 EndFraction = StartFraction question mark Over 200 EndFraction 140 divided by 2 = 70 70 people will be in attendance. What mistake did Natasha make? Natasha should have multiplied 140 by 2. Natasha should have divided 100 by 2. Natasha should have added 140 and 200. Natasha should have multiplied 140 and 200.

Answers

Answer:

A

Step-by-step explanation:

I did math

Answer:

a

Step-by-step explanation:

hope yall have a good day going back to school

adriana uses 1 1/4 cup of pretzels for every 1/2 cup of raisins

Answers

Answer:

1.25 cup of pretzels for every 0.5 cup raisins

Step-by-step explanation:

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