Answer:
FINAL ANSWER: BODY B was moving at 1.35 m/s, 21 degrees above the x-axis.
Step-by-step explanation:
REFER TO THE IMAGES for the SOLUTIONS TO YOUR PROBLEM. Each step will be explained here.
When you solve for velocities before or after collision, you need to remember the law of conservation of moment which can be expressed through this formula:
BEFORE AFTER
m1v1+m2v2 = m1v1 + m2v2
This basically means, the sum of momentum of 2 objects BEFORE collision is equal to the same 2 objects AFTER collision.
The type of collision we have in your case is a 2D collision, where there is a gliding collision or they touch at an angle. So when you solve these type of problems, you have to consider the x and y components of motion. It makes things easier if you make a table like in the image to sort out your components.
STEP 1: COMPUTE FOR MOMENTUM BEFORE COLLISION for each OBJECT involved.
To solve for momentum, the formula is mass x velocity or mv:
STEP 1a: Body A: The problem states that before collision Body A is moving along the positive X-axis so the velocity will be +4.5 m/s. Notice that the velocity of the y component is 0 m/s. This is because BODY A is moving along the x-axis, with no mention that it deviated from it.
STEP 1b: Body B: Body B is at rest before collision, that is why it is not moving at all, which means both x and y components are equal to 0.
STEP 1c: Get the sum of all X components and the Sum of Y components.
STEP 2: COMPUTE FOR MOMENTUM AFTER COLLISION for each OBJECT involved.
Step 2a: BODY A: Notice that we now have an angle. hence the cos and sin. We do this because we are breaking or decomposing the diagonal velocity into its x and y component. To get the x-component you get the cos of the angle and multiply it to the momentum of the diagonal or overall velocity. For y-component, instead of cos, you get the sin.
Step 2b: BODY B: Here we have unknowns, which we will derive later on. In this step, just plug in what you know into the formula.
Step 2c: We already know the x and y momentum of the objects BEFORE collision and the law of conversation of momentum states that the momentum AFTER is the same. With this total we can move onto the next step.
STEP 3: Solving for the X and y component of the velocity of BODY B AFTER collision.
Step 3a: Using the formula given in the image, we plug in what we know first. We know the momentum of the BODY A already, so we can put it into the equation. We also know the sum of both momenta and we put that into the equation too. Now all we do is derive the formula. DO NOT FORGET THAT WE ARE TO USE ONLY X COMPONENTS.
Step 3b: is the same as the previous step but instead, we use Y COMPONENTS only.
STEP 4: Combining X and Y components to get the resultant velocity:
For this step you need to remember the Pythagorean theorem. This is applied here because when you draw a free body diagram of the velocities, it creates a right triangle where :
the hypotenuse represents the final velocity
the opposite side represents the y-component and;
the adjacent represents the x-component.
Refer to the image for the solution.
STEP 5: Solving for the angle at which BODY B is moving:
For this step you need to remember SOH CAH TOA to find the angle at which BODY B is moving. You already have all the components you need, including the hypotheses. You can use any of the functions, and they should come up with the same approximation.
FINAL ANSWER: BODY B was moving at 1.35 m/s, 21 degrees above the x-axis.
isabel drove 335 miles in 5 hours at the same rate how any miles would she drive in 8 hours
Given L(-6, -7) and M(3, 6), what is the length of LM to the nearest tenth?
LM
Answer:
LM ≈ 15.8
Step-by-step explanation:
calculate the length d using the distance formula
d = [tex]}\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]
with (x₁, y₁ ) = L (- 6, - 7 ) and (x₂, y₂ ) = M (3, 6 )
LM = [tex]\sqrt{(3-(-6))^2+(6-(-7))^2}[/tex]
= [tex]\sqrt{(3+6)^2+(6+7)^2}[/tex]
= [tex]\sqrt{9^2+13^2}[/tex]
= [tex]\sqrt{81+169}[/tex]
= [tex]\sqrt{250}[/tex]
≈ 15.8 ( to the nearest tenth )
Please help I was sick and missed out on class.Thank you
Answer:
Step-by-step explanation:
Start with y intercept (Where the line crosses the y-axis)
You place the first dot on (0,2)
Negative slope goes down
For the second dot, you go down one and move two to the right
(01.06 MC)
Solomon invested money in his bank account. He had a principal, P,
of $100 in his account at the beginning of the period, which
increased at a rate, r, of 0.15 per year. At the end of the period, he
had interest, I, of $135 in his account. Use the simple interest
formula 1 = Prt, to solve for the time, t, in months that it took to
earn this amount. (1 point)
Answer:
700 months
Step-by-step explanation:
A triangular banner for the basketball championship hangs in the gym. It has an area of 48 square feet. What is the length of the base and height (in ft), if the base is two-thirds of the height?
From the area of a triangle, the height of the triangle is 12ft
Area of TriangleThe area of a triangle is defined as the total region that is enclosed by the three sides of any particular triangle. Basically, it is equal to half of the base times height, which is given by
A = 1/2 b * h
A = Area of triangleb = baseh = heightIn the given question, the base is two-thirds of the height.
b = 2/3h
Let's substitute the values into the formula
A = 1/2 * 2/3h * h
A = 2/6 * h²
A = 1/3h²
48 = 1/3h²
h² = 48 * 3
h = √144
h = 12ft
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kay walks upstairs yo make her legs stronger . Every day at work, she walks up 9 flights of stairs . If there are 13 steps in 1 flight of stairs in 1 flight of stairs , how many steps does kay climb in 5 days at work
In 5 days at work, kay climbs 585 steps
How to find how many steps kay climbsIf there are 13 steps in 1 flight of stairs then 9 flights of stairs will be
= 13 * 9
= 117 steps
Every day Kay climbs 117 steps in 9 flights in 5 days kay will climb
= 117 * 5
= 585 steps
Kay climbs 585 steps in a 5 days at work
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Which of the following is a requirement for employees who must wear PPE?
The option that's a requirement for employees who must wear PPE is C. Participate in PPE training.
What is a personal protective equipment?Personal protective equipment (PPE) is clothing that is comfortable to wear in order to reduce the risk of hazards at work that cause serious illnesses and injuries.
Personal protective equipment (PPE) will be divided into the following categories for this purpose: eye and face protection, hand protection, body protection, respiratory protection, and hearing protection.
Personal protective equipment (PPE) should be used when all other measures to control exposure are ineffective. It only protects the wearer while they are wearing it. PPE offers no protection if it fails.
All personal protective equipment should be designed and built safely, and it should be kept clean and reliable. It should be comfortable for workers to use. Personal protective equipment that does not fit properly can mean the difference between being safe and being dangerously exposed. Employers must provide personal protective equipment to their employees and ensure its proper use when engineering, work practices, and administrative controls are not feasible or provide adequate protection
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Complete question
Which of the following is a requirement for employees who must wear PPE?
a. Speak to the. project manager.
b. Get necessary clothes.
C. Participate in PPE training.
Graph stuff
Will mark brainliest
:)
The quadratic equation y = x² - 8 · x + 18 represents the parabola shown in the figure.
How to derive the quadratic equation behind the graph of the parabola
In this problem we find a representation of a parabola, which is described algebraically by quadratic equations, that is, polynomials of the form:
y = a · x² + b · x + c
Where a, b, c are the coefficients of the polynomial.
We can determine the value of the coefficients from the knowledge of three points set on Cartesian plane. First, select the points from Cartesian plane:
(x₁, y₁) = (0, 18), (x₂, y₂) = (4, 2), (x₃, y₃) = (7, 11)
Second, create a system of linear equations with three variables and three equations by replacing the variables x and y on the quadratic equation:
c = 18
16 · a + 4 · b + c = 2
49 · a + 7 · b + c = 11
Third, solve the system by numerical methods:
(a, b, c) = (1, - 8, 18)
Fourth, write the resulting quadratic equation:
y = x² - 8 · x + 18
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A carpenter states that it will take 21.5 hours
to build the deck. If the carpenter charges
$24.00 per hour, how much will the carpenter
be paid?
F
$45.50
G
$129.00
H
$504.00
J $516.00
Answer:
The carpenter will be paid $516.00
Step-by-step explanation:
1. Multiply
(Since the carpenter is being paid per hour, and the pay is $24.00, and the time it takes to work is 21.5, we can set up this equation):
21.5 x 24.00 = $516.00
May I have Brainliest please? My next rank will be the highest one: A GENIUS! Please help me on this journey to become top of the ranks! I only need 3 more brainliest to become a genius! I would really appreciate it, and it would make my day! Thank you so much, and have a wonderful rest of your day!
Determine the domain of the rational function ƒ(a) = 3/a+5
Answer:
domain { a ∈ R , a ≠ - 5 }
Step-by-step explanation:
the denominator of f(a) cannot equal zero as this would make f(a) undefined. Equating the denominator to zero and solving gives the value that a cannot be.
a + 5 = 0 ( subtract 5 from both sides )
a = - 5 ← excluded value
domain { a ∈ R, a ≠ - 5 }
À class counted how many banks were in all the nearby cities.
Richmond has________more banks than Dollarville
Answer:
4
Step-by-step explanation:
Richmond has 7 and Dollarville has 3. 7 - 3 = 4
What is 4 1/4 x (-12.2)?
need help pelase i need it
Door:80( actual height) 44( height on set)
Table 28( actual height) 15.4 ( height on set)
Stool 18 ( actual height) 9.9 ( height on set)
Step-by-step explanation:
Times the actual height inches by 0.55 and you get your height on set.
what is the value of the expression 0.307+13.16+0.8
Answer:
The Answer of the 0.307+13.16+0.8 is 14.267
HELP ME OUT THANKS SO MUCH
Answer:
R would equal 12
Step-by-step explanation:
Can anyone help me? Thank you
Answer:162
Step-by-step explanation:
1.5 ft = 18 inches
so
9 * 18 = 162
A car travels 120 miles and one and a half hours what is the average speed for miles per hour
Answer:
80
Step-by-step explanation:
120 divided by 3 (for per half hr) is 40 and if you add 2 of the half hrs together (40+40) its 80
A function's graph is shown below.
If you would like to enlarge the graph or make numbers and letters easier to read, you may click on it to open it in a new window. You may then enlarge that window with your mouse. To further enlarge the image, use your browser's zoom capabilities. On a PC this is usually ctrl shift + (and zooming out is ctrl -). On an Apple computer this is usually apple shift + (and zooming out is apple -).
Use interval notation to answer the following questions.
The domain of this function is ?
The range of this function is ?
The domain and the range of the function are given as follows:
Domain: (-2,3].Range: [-8, 2).How to obtain the domain and the range of the function?The domain of a function is composed by the set that contains all possible values assumed by the input of the function.
On a graph, the input of the function is given by the values of x, hence the domain of the graphed function is given by the following interval:
(-2,3].
The meaning of the circles on the intervals is of:
Open circle: open interval.Closed circle: closed interval.The range is composed by the set containing all the values assumed by the output of the function.
Hence, on the graph, the range is composed by the values of y of the function, which are given as follows:
[-8, 2).
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help meeeeeeeeeeeeeeee pleaseeeeeeehelp meeeeeeeeeeeeeeee pleaseeeeeeehelp meeeeeeeeeeeeeeee pleaseeeeeeehelp meeeeeeeeeeeeeeee pleaseeeeeeehelp meeeeeeeeeeeeeeee pleaseeeeeeehelp meeeeeeeeeeeeeeee pleaseeeeeee
Answer: 23.1, 13.35718336 years or 14 rounded
Step-by-step explanation:
[tex]Given:A= 23.1e^{0.0152t}[/tex]
when A = end amount, and t = years after 2000
Part A).
What was the population of the state in 2000. According to our function, this would be when t = 0
[tex]23.1e^{0.0152(0)}\\\\=23.1(1)\\\\=\boxed{23.1}[/tex]
Part B).
When will the population of the state reach 28.3 million?
This would be when A = 28.3
[tex]28.3=23.1e^{0.0152t}\\\\\frac{28.3}{23.1} =\frac{23.1e^{0.0152t}}{23.1} \\\\\frac{28.3}{23.1} =e^{0.0152t}\\\\ln^{\frac{28.3}{23.1} }=ln^{e^{0.0152t}}\\\\ln^{\frac{28.3}{23.1} }=0.0152t\\\\t=\frac{ln^{\frac{28.3}{23.1} }}{0.0152} \\\\\boxed{t=13.35718336 \ \ years}[/tex]
4x^2 + 4x =3
help pls
Answer:
x = .5, - 1.5
Step-by-step explanation:
4x^2 + 4x =3
To solve for x, we can complete the square.
4 ( x^2 + x) = 3
x^2 + x = 3/4
Take the coefficient of x, divide by 2, and square.
(1/2)^2
Then add to each side.
x^2 + x + 1/4= 3/4 +1/4
(x+1/2) ^2 = 1
Take the square root of each side.
x+1/2 = ±1
x = ±1 -1/2
x = 1-1/2 or -1-1/2
x = 1/2, -3/2
x = .5, - 1.5
Answer:
x = 1/2 or -3/2
Step-by-step explanation:
Rewrite in Standard Form:
4x²+4x=3 ==> 4x²+4x-3=0
Identify: a=4 b=4 c= -3
Quadratic Formula:
[tex]x=\frac{-b+\sqrt{b^2-4ac}}{2a} or \frac{-b-\sqrt{b^2-4ac}}{2a}\\ \\=\frac{-4+\sqrt{4^2-4(4)(-3)}}{2(4)} or \frac{-4-\sqrt{4^2-4(4)(-3)}}{2(4)}\\\\=\frac{-4+\sqrt{16+48}}{8} or \frac{-4-\sqrt{16+48}}{8}\\\\=\frac{-4+\sqrt{64}}{8} or \frac{-4-\sqrt{64}}{8}\\\\=\frac{-4+8}{8} or \frac{-4-8}{8}\\\\=\frac{4}{8} or \frac{-12}{8}\\\\=\frac{1}{2} or -\frac{3}{2}[/tex]
Suppose a mutual fund has total assets of $25,500,000 and liabilities of $2,100,000. Currently there are 10,200,000 shares outstanding. Determine the net asset value of the fund? Round to the nearest cent. Show your work
The net asset value of the given mutual fund will be 2.29.
What is the arithmetic operator?Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,
Division = divide any two numbers or variables called division.
Multiplication = to multiply any two or more numbers or variables called multiplication.
As per the given,
Total assets = $25,500,000
Liabilities = $2,100,000
Total shares = 10,200,000
Net asset = (total assets - total liability)/total shares outstanding
Net assets = (25,500,000 - 2,100,000)/10,200,000
Net assets = 2.29
Hence "The net asset value of the given mutual fund will be 2.29".
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Find the sum of the arithmetic sequence 1, 3, 5, 7, … , 99.
The sum of the arithmetic sequence 1, 3, 5, 7, … , 99 is 2525
What is Sequence?Sequence is an enumerated collection of objects in which repetitions are allowed and order matters.
Given sequence is 1, 3, 5, 7, … , 99.
It is a arithmetic sequence, the difference between two consecutive terms will be same
d=3-1=2
first term a=1
l=last term =99
We need to find 99 is which term in the sequence
Aₙ = a + ( n - 1 ) d
99=1+(n-1)2
99=1+2n-2
99=2n-1
100=2n
Divide both sides by 2
50=n
Now we need to find the sum of 50 terms
Sₙ=n/2(l+d)
=50/2(99+2)
=25(101)
=2525
Hence, the sum of the arithmetic sequence 1, 3, 5, 7, … , 99 is 2525
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select independent or not independent for each situation
Answer: the first one
Step-by-step explanation:
Ashley's company makes solid spherical balls out of scrap metal for various industrial uses. A large order just came in to make aluminum balls with a radius of 4.5 in. If Ashley uses 74,325in^3 on average, of aluminum each day making these balls, how many balls does she make, on average, each day?
Using the formula of volume of a sphere, Ashely's company made 195 balls
Volume of SphereThe volume of sphere is the measure of space that can be occupied by a sphere. If we draw a circle on a sheet of paper, take a circular disc, paste a string along its diameter and rotate it along the string. This gives us the shape of a sphere.
The formula of volume of a sphere is given as
v = 4/3πr³
r = radius = 4.5in
volume of each spherical ball = 4/3π(4.5)³
volume of sphere = 381.7in³
The number of balls she made from 74325 in³ can be found by dividing it by 381.7in³
Number of balls = 194.7≅195 balls
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C. Solve the following;
1. Elisse has 20 meters of ribbon. How many 15 cm of ribbon can be cut from it?
2. Mr. JB has a rectangular lot that measures 550 meters by 0.75 km. What is the area of the land in square meter. He is selling the whole lot for 206, 250,000 pesos, how much is the price per square meter?
3. Drinking 8 glasses of water a day is good for your health. If each glass of water is equivalent to 148 mL, how many liters of water you need to consume everyday.
4. Your baby brother has a body temperature of 100°F. What is his body temperature in °C ? Does he has a normal body temperature?
5. Your mother asked you to buy 2.5kg of sugar. Each pack of sugar in the store weighs 250 grams. How many packs of sugar will you buy?
6. The 120 grams powdered milk make 12 cups of milk. How many kilograms of powdered milk can produce 60 cups of milk. How many liters is 60 cups of milk?
7. You have 8 modules to study in a day. Your teacher gave you this schedule for 5 days from Monday to Friday.
Answer:
133, 412500, 500, 1.184, 37.8, 10, 0.6
Step-by-step explanation:
If we think about how many centimeters are in a meter, we know that
1m = 100cm
Using this, we can see that
20m = 2000cm
Now divide by 15:
2000 ÷ 15 ≈ 133
She can make roughly about 133 ribbons.
To solve the next question, we need to know how many kilometers are in a meter
1km = 0.001m
Let's covert 0.75 into m:
0.75 × 1000 = 750
Now solve for the area:
750 × 550 = 412500
The area of the rectangle is 412500
If he is selling the home for 206,250,000 pesos,
206,250,000 divided by 412500
206,250,000 ÷ 412500 = 500
The price per square meter is 500
If each glass is 148 milliliters, and we need to convert that into liters, we can use the equation:
1L = 1000mL
So converting 148 into liters,
148mL = 0.148L
Now, multiply by 8.
0.148 × 8 = 1.184L
We need to convert 100 Fahrenheit to Celsius.
100 F ≈ 37.8
This is definitely not a normal body temperature.
We can convert grams to kilograms using the equation:
1kg = 1000 g
Converting 2.5kg to g would look like this:
2.5kg = 2500g
250g × 10 = 2500g
We need to buy 10 packs of sugar.
If 120 grams of powdered milk can produce 60 cups of milk, and we need to figure out how many kg can produce the same amount, we use the equation:
1kg = 1000g
Converting 120g to kg would look like this:
120 ÷ 1000 = 0.120
Now, we need to figure out how many times 12 goes into 60.
12 × 5 = 60
Now we multiply 0.120 by 5
0.120 × 5 = 0.6
I hope this helps!
Select all of the verbal phrases which can be represented by the expression 25.75x + 10
Answer:
B: 25.75 times a number x, plus 10 | D: the product of 25.75 and x, plus 10
Step-by-step explanation:
B: 25.75 times "x" = 25.75x + 10
D: The product of 25.75 and x = 25.75x + 10
When Terri makes fruit salad she uses 4 oranges and 3 cups of grapes for every 2 bananas. If Terry uses five bananas how many oranges and how many cups of grapes will she use? Write and solve a proportion
Answer:
7.5 cups of grapes
Step-by-step explanation:
4o:3g:2b
With 5b, there's an increase in 2.5 from 2b. (divide 5b/2b)
Since the increase in all the other fruits is proportional by the same amount of 2.5.
This leaves you with 10o:7.5g:5b
Express cos L as a fraction in simplest terms.
15
39
K
36
The representation of cos L in simplest term is 5/13. It can be obatined by trigonometric ratios.
What are trigonometric ratio?
The ratio of sides of a right angled triangle is known ars trigonometric ratios. There are six trigonometric ratios. Which are as follows:
sin = P/H, cos = B/H, tan = P/B
cosec = H/P, sec = H/B, cot = B/P
Here, P is perpendicular, H is hypotaneous, and B is base. These ratios simplify the calculation.
SInce the angle is not specified hence, consider the given angle is L. Now, L is given angle hence, the base will be 15 and hypotenous will be 39.
Now, consider the trigonometric ratio of cos.
[tex]cosL=\frac{Base}{Hypotenuse}\\[/tex]
Subsitute 15 for base and 39 for hypotenuse in the above expression.
[tex]cosL=\frac{15}{39}\\=\frac{5}{13}[/tex]
Hence, the representation of cos L in simplest term is 5/13. It can be obatined by trigonometric ratios.
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Solve using order of operations
16÷2×6-3
The Order of Operations, also referred to as PEMDAS, is the rule that defines the sequence in which an expression with multiply operations can be solved.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In this scenario, we are dividing, multiplying, adding, and subtracting numbers. This being laid out, lets begin.
1. Multiply and divide (left to right).
[tex]16[/tex] ÷ [tex]2 * 6 = 48[/tex]
[tex]=48-3[/tex]
2. Add and subtract (left to right).
[tex]48-3=45[/tex]
Hence, our final solution after using the order of operations would be [tex]45[/tex].
Hope this helps!
-4x+11y=-32
-9x+4y=11
elimination
Answer:
x = -3; y = -4
Step-by-step explanation:
We can start by eliminating x, which will give us y:
[tex]9(-4x +11y=-32)\\-4(-9x+4y=11)\\\\-36x+99y=-288\\36x-16y=-44\\\\83y=-332\\y=-4[/tex]
Now we can plug in -4 for y in the first equation to find x:
[tex]-4x+11(-4)=-32\\-4x-44=-32\\-4x=12\\x=-3[/tex]