The time of a pendulum varies as the square root of its length. If the length if a pendulum which beats 15seconds is 9cm, find the length that beats 80seconds and the time of a pendulum with length 36cm
Answer:
length= 3.7 ft.
Step-by-step explanation:
T= (square root of length) * k
1.8 seconds = (square root of 3) * k
k= 1.8 seconds / (square root of 3)
a.) T= (square root of 11) k
substituting k:
T=(square root of 11) * 1.8 seconds / (square of 3)
T= 3.4 seconds
b.) 2 seconds = (square root of length) k
substituting k:
2 seconds =(square root of length) 1.8 seconds / (square root of 3)
Divide the equation by 1.8 seconds / (square root of 3):
2 seconds / [1.8 seconds / (square root of 3)] = (square root of length)
10(square root of 3) / 9 = (square root of length)
square both sides:
100/7 ft= length
length= 3.7 ft.
Hope this helps.
Can someone please help
Answer:
(-4)^10
Step-by-step explanation:
When doing this sort of problem, we multiply the exponents.
This is the power rule.
Probability tree diagram
Answer:
?
Step-by-step explanation:
can you explain a little more
Emilia and Joshua shared some money in the ratio 1:6.
Emilia received £15.
How much did Joshua receive?
Answer:
15x6
Step-by-step explanation:
do 15x6 and what that is, is the answer
A box of cereal states that there are 87 calories in a 3 4-cup serving. What is the unit rate for calories per cup? How many calories are there in 3 cups of the cereal?
Answer:
3 cups = 348 calories
Step-by-step explanation:
Step 1
Let the calories in one cup be represented as C
Therefore
3/4 x C = 87 calories
C = 87 X 4 / 3 = 116
unit rate is 116 calories per cup.
Step 2- Solving the number of calories in 2 cups
1 cup serving = 116 calories
2 cups servings = 116 x 2= 232 calories
116 x 3 = 348 calories
Credit: tutorAnne
Describe the mathematical process for finding the area of a rectangle triangle and circle be sure to included explain the formulas for finding the area if each shape
Pencils cost 2 dollars each.
Rulers cost 3 dollars each.
Edith buys p pencils and r rulers.
The total cost is T dollars.
Write down a formula for Tin terms of p and r.
(3 marks)
solve the inequality 2(n+3) - 4 < 6. then graph the solution.
Please help ??
Answer:
n < 2
Step-by-step explanation:
Answer: Look at the explanation please.
Step-by-step explanation:
The first thing you would do is distribute the 2 to the n and the 3.
You will then get 2n+6-4<6
Next, you will have to subtract 6-4 and you will get 2
You will the have 2n+2<6
Subtract 2 from 2 to get 0 and from 6 to get 4.
Your left with 2n<4
Then, divide 2 from 2n and 2 from 4
Last, your answer will be n<2.
Graphing
Your graph would look like (from what I see in my book)
You have seven tick marks and in the middle will be 0.
From the left of 0 should have negative 1, 2, and 3
From the right of 0 would be positive 1, 2, and 3
On the top of 2 would be a open circle and an arrow going to the left.
Hope this helps :)
use the pythagorean theorem to write an equation for the distance Jane's trainer bikes.
Complete question is;
Jane is training for a triathlon. After swimming a few laps, she leaves the health club and bikes 16 miles south. She then runs 12 miles west. Her trainer bikes from the health club to meet jane at the end of her run. Use the pythagorean theorem to write an equation for the distance janes trainer bikes
Answer:
x = √(12² + 16²)
Step-by-step explanation:
We are told that;
She bikes from health club to South = 16 miles
From South to West = 12 miles
Her trainer bikes from the health club to meet her at the end which is west.
I have attached a diagram showing this movement in form of a triangle.
From the diagram I attached, I have depicted the distance the trainer bikes as x.
Using pythagoras theorem;
x² = 12² + 16²
x = √(12² + 16²)
Which quadrants are (-4,5) in
Answer:
Quadrant 2
Step-by-step explanation:
Take a look at the picture I added it should help you on futures questions like this :)
Find the equation of the line use exact numbers really need this plz
Answer:
Y = 4 and X = -6 , So the equation would be 4 + -6
Step-by-step explanation:
Look at were the line go across the numbers in Line Y and Line X this will help you understand more. And i also answered first :)
Answer:
y=3/2x+4
Step-by-step explanation:
First we find the slope.
To find the slope, we use this equation:
x2-x1/y2-y1=slope
So, we just need to pick any two points on the line.
(0, 4) and (3, 6)
3-0/6-4
3/2
The slope is 3/2.
Now, all we need to find is the B in y=3/2x+B
B is also known as the y intercept.
Since the line passes through 4 when x=0, the y intercept is 4.
So the equation is:
Y=3/2x+4
I need help with 1 through 10
Answer:
1) yes
2) no
3) no
4) no
5) yes
6) yes
7) yes
8) yes
9) circle equation - B
10) circle equation - D
11) 12 people in each team
sorry im not able to answer for 12 , 13 and 14 i have urgent work im so sorry
Here is a picture of the Ferris wheel has a radius of 40 m how far does the writer travel in one complete rotation around the Ferris wheel
Answer:
I'm getting points
Step-by-step explanation:
so I can ask questionss
I need assistance please
Answer:
23
Step-by-step explanation:
6/3 = x-5/9 simplify the first fraction
2= x-5/9 multiply both of the sides
18 = x-5/9 move it around correctly
-x=-5-18 calculate it
-x=-23 the negatives cancel out
x=23
Please help :( Find X.
Round to the nearest tenth.
Explain answer !!
( WILL GIVE BRAINLEST)
Answer:
25-7
Step-by-step explanation:
"Substitute for": Replace x with ____
Since it is given that x = 25 -y, we can replace the x in 5x + y = 10 with 25 - y by the substitution property of equality.
Answer:
The expression to substitute for x is: 25-y, as said in the first equation
Step-by-step explanation:
Not sure if you need to solve for the variables, but here:
To find y:
Put 25-y in place of x.
You will get:
5(25-y) + y = 10
Use the Distributive Property and multiply 25 and y by 5:
125 - 5y + y = 10
Combine like terms (the y's):
125 - 4y = 10
Put like terms on the same side (move the 125 to the right side of the equal sign by subtracting 125 from both sides:
-4y = -115
Divide both sides by -4:
y = 28.75 (or 28-3/4)
To find x:
Substitute 28.75 for y in either equation.
First equation:
x= 25 - 28.75
x= -3.75
Second equation:
5x + 28.75 = 10
Subtract 28.75 from both sides:
5x = -18.75
Divide both sides by 5:
x = -3.75
HELPPPPOMOGMGOGMGOGKM PLS ANSWER THIS CORRECTLY PLZZZ THIS IS FOR A VERY IMPORTANT TEST YOUWILL GET BRAINLIEST HELP
Answer:
i cant give u the answer but here is an example hope this helps slope = "rise over run" the difference in y values divided by the difference in x values
= 6/-3 = -2 = m. It's negative because as x increases, y decreases
plug that into the point slope formula, with either point. generally use the most simple point
y-h= m(x-k) where m= -2 and (k,h) = (2,-2)
y+2 = -2(x-2)
simply if you want
Y = -2x +4 -2 = -2x +2
or
2x +y = 2
Step-by-step explanation:
Answer:
Your slope is -1
Your y inter is -3
Step-by-step explanation:
Hope this helps you :)
(−4,3),(−2,1),(0,−1),(2,−3) Write a scenario?
Answer:
tergtjmsrhatsfdghb
Step-by-step explanation:
8. Do the representations below define a function? *
y =
x - 2
Yes, it is a function.
No, it is not a function.
Answer:
Step-by-step explanation:
Yes it is a function. Every x has only 1 y associated with it.
Find f(5) for f(x)= 1/9(3)^x
A. 27
B. 3
C. 9
D. 81
Answer:
A 27
Step-by-step explanation:
f(5) means x = 5, so substitute 5 into 1/9(3)^x
f(5) = 1/9(3^5) = 1/9(243) = 27
Answer:
27
Step-by-step explanation:
HELP HELP PLSSSSSSSSSSSSSSSSSSSSSSSS
Answer:
19
Step-by-step explanation:
31 +9 =40
40 by 2 = 20
9-5=4
4 by 4= 1
20-1= 19
9.
Jacks Plumbing charges customers $100 per hour for repair jobs. Al's Plumbing charges according to the equation y = 75x + 50, where x = time in hours and y = cost
dollars
Explain why Ars Plumbing charges less than Jacks Plumbing for a 4-hour repair job.
Does Als Plumbing charge less than Jacks Plumbing for all repair jobs? Explain why or why not.
Answer:
As given,
Per hour cost of Jack's plumbing = $100
Also,
Al's plumbing charges = 75x + 50 where x = time in hours .
Now,
Al's plumbing cost for 4 hours:
Here , x = 4
⇒75x + 5 = 75(4) + 50 = 300 + 50 = 350
∴ we get
Al's plumbing cost for 4 hours = $350
Now,
As Jack cost for 1 hour = $ 100
⇒ For 4 hour = 4×$100 = $400
∴ we get
Jack's plumbing cost for 4 hours = $400
As we can see that
$ 400 > $350
⇒Jack's plumbing cost for 4 hours > Al's plumbing cost for 4 hours
Now,
Al's plumbing charges = 75x + 50 where x = time in hours .
For 1 hour
75x + 50 = 75(1) + 50 = 125
Al's 1 hour cost = $125
whereas Jack Plumbing cost for 1 hour = $100
∴ we get
$125 > $100
⇒Al's 1 hour cost > Jack's 1 hour cost
Now,
Al's 2 hour cost
75x + 50 = 75(2) + 50 = 150 + 50 = 200
Al's 1 hour cost = $200
whereas Jack Plumbing cost for 2 hour = $200
∴ we get
$200 = $100
⇒Al's 2 hour cost = Jack's 2 hour cost
Now,
Al's 3 hour cost
75x + 50 = 75(3) + 50 = 225 + 50 = 275
Al's 1 hour cost = $275
whereas Jack Plumbing cost for 3 hour = $300
∴ we get
$275 < $300
⇒Al's 3 hour cost < Jack's 3 hour cost
Als0,
Jack's plumbing cost for 4 hours > Al's plumbing cost for 4 hours
∴ we get
We can not say that Als Plumbing charge less than Jacks Plumbing for all repair jobs.
Because the charge is fluctuating ,
For 1 hour , Aly' charge is grater whereas The 2 hour cost of Jack's is higher.
So, the Correct answer is - No, Al's Plumbing charge is not always less than Jacks Plumbing for all repair jobs.
72: 24 equivalent to?
3:1 is the answer
it is simplified
pls do this exponent worksheet
PLZZZZ HELP QUICK
Ted and Katie have saved up a total of $94.00. Ted has saved 6 dollars less than 4 times as much as Katie. How much has Katie saved?
Answer:
22
Step-by-step explanation:
94-6 divided by 4
Answer:
LOOK BELOW IN STEP-BY-STEP
Step-by-step explanation:
First, do $94.00 times 4 which is $376
Then, take away 6 dollars from $376 which is $370
Hope that helped!!!
A car depreciates in value each year. Which of the following is NOT true about the value of the car after t years
Answer:
The car will be worth more in 20 years than the amount it was purchased for.
Step-by-step explanation:
If you look at the graph you see a downward trend, not an upward. That makes it impossible for it to be worth more Hopefully this helps.
Answer: B (top right)
Step-by-step explanation:
I need help on this problem really I would be grateful
Answer:
Step-by-step explanation:
The answer is A
This circle graph shows the results of a survey that asked people to identify their favorite type of music.
What percent of people chose rock or country as their favorite type of music?
A. 9%
B. 35%
C. 45%
D. 55%
I NEED HELP ASAP PICTURE IS DOWN BELOW
Answer:
18
Step-by-step explanation:
90/5=18
Under her cell phone plan, Katherine pays a flat cost of $50 per month and
$5 per gigabyte. She wants to keep her bill at $71 per month. How many
gigabytes of data can she use while staying within her budget?
Answer: x = 4.2
Step-by-step explanation:
To keep her bill at $71 per month, she needs to consume 4.2 gigabyte in a month.
A linear equation is in the form:
y = mx + b;
where y, x are variables, m is the slope of the line and b is the initial value of y.
Let y represent the amount of money paid for x gigabyte.
Given a flat cost of $50 per month and $5 per gigabyte, hence m = 5, b = 50. Therefore:
y = 5x + 50
For a bill of $71 per month:
71 = 5x + 50
5x = 21
x = 4.2
To keep her bill at $71 per month, she needs to consume 4.2 gigabyte in a month.
Find out more on linear equation at: https://brainly.com/question/14323743