Find the initial velocity of an object if the velocity after 4 seconds is 18 ft/s
The object had an initial velocity of 0m/s
Projectile MotionProjectile motion is a form of motion experienced by an object or particle that is projected in a gravitational field, such as from Earth's surface, and moves along a curved path under the action of gravity only.
A projectile is an object upon which the only force acting is gravity. There are a variety of examples of projectiles. An object dropped from rest is a projectile (provided that the influence of air resistance is negligible). An object that is thrown vertically upward is also a projectile (provided that the influence of air resistance is negligible). And an object which is thrown upward at an angle to the horizontal is also a projectile (provided that the influence of air resistance is negligible). A projectile is any object that once projected or dropped continues in motion by its own inertia and is influenced only by the downward force of gravity.
Using equation of motion, we can find it's initial velocity.
v² = u² - 2gh
g = acceleration due to gravityv = final velocityu = initial velocityt = time takensubstituting the values and solving for u
But we don't know h; we can use the acceleration to find that
a = v / t
a = 18/4
a = 4.5 m/s²
v = u + at
18 = u + 4.5 * 4
u = 0
The initial velocity was 0m/s
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Describe how the graphs of y=lxl and y=lx+3l are related
The two graphs have the same shape but the second graph shifted 3 units up.
The two graphs have the same shape but the second graph shifted 3 units down.
The two graphs have the same shape but the second graph shifted 3 units left.
The two graphs have the same shape but the second graph shifted 3 units right.
Answer:
The two graphs have the same shape, but the second graph shifted 3 units left.
Milo's car straight line depreciates monthly over time. He knew that after 7 months his car was worth $26,930. According to an online car value calculator after 30 months, he
determined that his car was worth $19,800. How much does his car depreciate each month?
The value of car depreciates by $310 per month.
What is Depreciation?
The reduction in the value of an asset due to wear and tear is termed as Depreciation.
Solution:
Value of Car after 7 months = $26,930
Value of Car after 30 months = $19,800
So, it can be said that in 23 months the value of car depreciated by $7,130.
Since, straight line depreciation method is been followed,
Therefore, monthly depreciation will be calculated by dividing $7,130 to 23
= $7,130/23
= $310
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For the following image, find the measure of x:
(ONLY type your numerical answer. Round the the hundredths place.)
Side x =
The trigonometric function is useful to find the sides of a right-angle triangle. The value of x using the trigonometric function sin will be 7.884.
What is a trigonometric function?The fundamental 6 functions of trigonometry have a range of numbers as their result and a domain input value that is the angle of a right triangle.
The trigonometric function is only valid for the right angle triangle and it is 6 functions which are given as sin cos tan cosec sec cot.
Given right angle triangle,
Use sin trigonometric function.
Sin21° = x=22
x = 22 × 0.358
x = 7.884
Hence "The trigonometric function is useful to find the sides of a right-angle triangle. The value of x using the trigonometric function sin will be 7.884".
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Matter in a liquid state when it’s temperature is between it’s melting point and boiling point. Suppose that some substance has a melting point of -34.93 degrees Celsius and a boiling point of -332.29 degrees Celsius. What is the range of temperatures in degrees Fahrenheit for which this substance is not in liquid state? (Hint: C = 5/9(F - 32)) Express the range as an inequality.
According to the given temperature function, the substance will not be in liquid state in range is written as the inequality -30.874 < x < 566.121.
Function:
Function refers the special relationship where each input has a single output. It is often written as "f(x)" where x is the input value.
Given,
Matter in a liquid state when it’s temperature is between it’s melting point and boiling point. Suppose that some substance has a melting point of -34.93 degrees Celsius and a boiling point of -332.29 degrees Celsius.
Here we need to find the range of temperatures in degrees Fahrenheit for which this substance is not in liquid state.
Here we have the following details
Melting point = -34.93C°
Boiling point = -332.29C°
Function = C = 5/9 (F - 32)
n order to find the inequality of the function we have to apply the value of boiling and melting point in it,
First, we have to apply the value of melting point, then we get,
=> -34.93 = 5/9 (F - 32) Distribute
=> -34. 93 = 5/9 F - 160/9 Multiply both sides by 9
=> -314.37 = 5F - 160 Add 160 on both sides
=> -154.37 = 5F Divide both sides by 5
=> -30.874= F
Therefore, the melting point in F= -30.874.
Similarly, for the boiling point it can be calculated as,
=> -332.29 = 5/9 (F - 32) Distribute
=> -332.29 = 5/9 F - 160/9 Multiply both sides by 9
=> -2990.61 = 5F - 160 Add 160 on both sides
=> -2830.61 = 5F Divide both sides by 5
=> -566.121= F
Therefore, the boiling point in F= -566.121
So, the resulting inequality is -30.874 < x < 566.121.
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y= 2x^+5x+1
Y=-2x^2-5x-1
What is the slope of the line that passes through the points (-1, 6)(−1,6) and (14, 3)(14,3)?
The slope of the line that passes through the points (-1, 6) and (14, 3) is - 1 / 5.
We know that the slope of a line is given by the formula,
m = (y₂ - y₁) / (x₂ - x₁)
where (x₂, y₂) and (x₁, y₁) are the coordinates of any point on the line of slope.
We are given the following points;
(-1, 6) and (14, 3)
substitute the given value in the slope formula, we will get;
m = (3 - 6) / (14 - (- 1))
m = - 3 / 14 + 1
m = - 3 / 15
m = - 1 / 5
So, the slope is - 1 / 5.
Thus, the slope of the line that passes through the points (-1, 6) and (14, 3) is - 1 / 5.
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Suppose that the credit remaining on a phone card (in dollars) is a linear function of the total calling time (in minutes). When graphed, the function gives a line with a slope of -0.13. There is $24.16 in credit remaining on the card after 32 minutes of calls. How much credit was there after 24 minutes of calls?
Using the linear function equation that models the situation given, the amount of credit left after 24 minutes of calls is: $25.2.
How to Write a Linear Function?One of the ways to write a linear function equation is to express it in slope-intercept form as y = mx + b, where the slope is represented as m and the y-intercept is represented as b.
From the information given, we can deduce the following:
y = credit card remaining in dollars
x = minutes
Slope (m) = -0.13
A point = (x, y) = (32, 24.16)
Substitute m = -0.13, x = 32, and y = 24.16 into y = mx + b to find the value of b:
24.16 = -0.13(32) + b
24.16 = -4.16 + b
24.16 + 4.16 = b
28.32 = b
b = 28.32
Write the equation of the linear function by substituting b = 28.32 and m = -0.13 into y = mx + b:
y = -0.13x + 28.32
To find how much credit there was after 24 minutes of calls, substitute x = 24 into y = -0.13x + 28.32:
y = -0.13(24) + 28.32
y = 25.2
$25.2 credit was left.
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please help me solve
!
The solution to the trigonometric equation 5cos(5x) = 4 is given as follows:
x = 7.37º.
How to solve the trigonometric equation?The definition of the trigonometric equation is presented as follows:
5cos(5x) = 4
The first step towards solving the trigonometric equation is isolating the trigonometric variable, hence:
cos(5x) = 4/5.
Then we have to isolate the variable x, which is done applying inverse trigonometric functions, as follows:
arccos(cos(5x)) = arccos(4/5)
5x = arccos(4/5)
Using a trigonometric calculator to obtain the arc cosine of four fifths, for the smallest positive integer, we have that:
5x = 36.86º.
Now we only apply the division to isolate the variable x and obtain the solution, as follows:
x = 36.86º/5
x = 7.37º.
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Rounded to the nearest tenth, what is the area of rectangle ABCD?
70.1 square feet
40.5 square feet
35.1 square feet
25.5 square feet
24.6 square feet
The area of the rectangle is 35.07 square feet which can be rounded to 35.1 square feet.
Given that:
Here ABDC is a rectangle and AD is diagonal. Hence, Δ ABC is a right triangle with AD = 9 feet and ∠CAD = 60°.
In ΔCAD,
sin ∠CAD = sin 60°= Perpendicular/Hypotenuse
sin 60° = AC/AD
√3/2 = AC/9
=> AC = 9√3/2 ft
cos ∠CAD = cos 60° = Base/ Hypotenuse
cos 60° = CD/9
1/2 = CD/9
=> CD = 4.5 ft
So, calculating the area of the rectangle = length x breadth
= AC x CD
= 9√3/2 x 9/2
= 81√3/4 ft²
The area of the rectangle = 35.07 ft² which can be rounded to 35.1 square feet.
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What is the greatest common multiple
of 7 and 8
Answer: 1
Step-by-step explanation:
Answer:
The correct answer is 1.
Step-by-step explanation:
The greatest common factor of two non-zero integers, x(7) and y(8), is the greatest positive integer m(1) that divides both x(7) and y(8) without any remainder. Therefore, the greatest common multiple of 7 and 8 is 1.
Hope this helps! Have an amazing rest of your day! Please give me Brainliest for my answer! :)
Tough question !!! Help
Answer:
[tex]y = 4(1.4)^x[/tex]
[tex]\text{at x = 5, }y=21.513[/tex]
Step-by-step explanation:
If you think about an exponential function in the form: [tex]f(x) = a(b)^x[/tex]
you'll realize a pattern, which is by definition.
Evaluating the function at x = 1: [tex]f(1) = a(b)^1 \implies a(b)[/tex]
Evaluating the function at x = 2: [tex]f(2) = a(b)^2 \implies a(b * b)[/tex]
Evaluating the function at x = 3: [tex]f(3) = a(b)^3\implies a(b * b * b)[/tex]
Each term just has an additional "b" that it's being multiplied by. This is by definition of an exponential function, repeated multiplication.
You'll also notice something else interesting, we can find this "b" value by dividing any term by it's previous term.
Take for example f(1) and f(2): [tex]\frac{a(b* b)}{a(b)}\to b[/tex]
As mentioned before, as x increases by one, we just have another term to multiply by. So if we divide by the previous term (where x is one less), then we should just have this "b" value, which is the generally expressed in either a growth or decay rate.
So now that we know that, we can divide f(2) by f(1) using the values shown on the graph:
given:
[tex]f(1) = 5.6\\f(2) = 7.84[/tex]
Let's divide the f(2) by f(1) to get: [tex]\frac{7.84}{5.6} \to1.4[/tex]
Lastly to find our "a" value, we just need to find the y-intercept, since when x = 0, the b will be equal to one (since anything raised to the power of zero is one), we can just look at the graph to see the y-intercept.
Looking at the graph, we can see the y-intercept is four, so a = 4.
Another way to do this algebraically rather than visually, would be to use our knowledge of exponentials to realize that as x increases by one (when we're going right), the y-value is just being multiplied by "b" as mentioned before.
So as x decreases by one (when we're going left) the y-value is just being divided by "b".
So f(0) should be equal to f(1) / b, and we know both values! Which are going to substitute into: [tex]\frac{5.6}{1.4}\to 4[/tex]
Anyways, once we plug in "a" and "b" into the standard form of an exponential function, we get: [tex]y = 4(1.4)^x[/tex]
We can now use this equation to find y-values that are not shown in the graph.
To find the x-value at x = 5, simply substitute in "5" as x
[tex]y = 4(1.4)^x\\\\\text{substitute 5 as x}\\\\y=4(1.4)^5\\\\y=4(5.37824)\\\\y\approx 21.513[/tex]
Caroline invested $80,000 in an account paying an interest rate of 8 1/8% compounded
daily. Qasim invested $80,000 in an account paying an interest rate of 7 3/4/%
compounded quarterly. After 10 years, how much more money would Caroline have
in her account than Qasim, to the nearest dollar?
PLEASE HELP!
Caroline have $7901.5 more in her account than Qasim when they both invest together compounded for 10 years.
What is compound interest?Compound interest is when an amount receives interest on top of it each time interest is paid on the original amount. The principal (original) sum and the interest that has already accrued over the course of previous periods are used to calculate compound interest.
here,
Caroline invested $80,000 in an account paying an interest rate of 8 1/8% compounded daily for 10 years,
A=P(1+r/n)^n/t
=$180,266.48
Caroline invested $80,000 in an account paying an interest rate of 8 1/8% compounded daily for 10 years,
A=P(1+r/n)^n/t
=$172,365.02
The difference between amounts,
=$180,266.48-$172,365.02
=$7,901.46
When they both invest which is compounded for 10 years, Caroline has $7901.5 more in her account than Qasim.
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Answer: 7901
Step-by-step explanation:
Express
6
7
as the sum of two equal fractional parts.
From the calculation, the two fractional parts are; 6/14.
What are the fractional parts?We know that a fraction is composed of a numerator and a denominator. A numerator is the number that is found at the top while the denominator is the number that is found below. We are told that we have the 6/7 and we are told to express it as the sum of two equal fractional parts;
Hence let the fractional parts be x. We know that the fractional parts are equal hence;
2x = 6/7
x = 6/7 * 1/2
x = 6/14
To check our working;
6/14 + 6/14 = 12/14 = 6/7
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12. Two functions are given below, one in equation form and the other in table form. Using these functions, give
the value of g (f (4)). Show how you arrived at your answer.
x
f(x)
-2
-1
0
3
4
12
7
9
19
6
g(x)=3.25x+6
The composition of the functions, when evaluated in x = 4, is:
g( f(4)) = 39
How to find the value of g(f(4))?Here we have two functions, one is a linear function:
g(x) = 3.25*x + 6
And the other is f(x), which is defined on a table.
We want to find the composition:
g( f(4)) = 3.25*f(4) + 6
Then we need to find the value of f(4), on the table we have the pair:
x f(x)
4 12
Which means that:
f(4) = 12
Replacing that we get:
g( f(4)) = 3.25*f(4) + 6
g( f(4)) = 3.25*12 + 6 = 39
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please help. I don't get it.
The matrix below represents a system of equations,
1 1 -2| 1 |
2 -3 1|-2|
2 2 -4|2|
Which of the following describes the solution to this system of equations?
A dependent
B inconsistent
C independent
D unique
Graph the line by plotting any two ordered pairs that satisfy the equation.
y=x−6
Answer:
Step-by-step explanation:
Ordered pairs
x = 1 Given
y = 1 - 6 = - 5 Put the given into the equation
Ordered pair: (1,-5)
x = 4
y = 4 - 6
y = - 2
Ordered pair:(4,-2)
Graph
Marsha pays $25 each month for a car wash membership. Which of the following represents the total amount subtracted from her account after 4 months of having the membership?
A. −4|25| = −$100
B. 4|−25| = $100
C. |−25| − |4| = $21
D. |−25| − 4 = $21
Answer:
B. 4|−25| = $100
Step-by-step explanation:
Hope this helps!
You work in a bakery, and you are adding an edible lace border around the top edge of a quarter sheet cake. A quarter sheet cake is rectangular with a length of 13 inches and a width of 9 inches. What is the length of the border around the cake?
22 inches
28.26 inches
40.82 inches
44 inches
117 inches (This is incorrect)
The length of the border around the cake is the same as the perimeter of the cake, which is D. 44 inches.
What is the perimeter?The perimeter is the sum of the lengths of the four sides of the rectangular cake.
In other words, the perimeter is the total lengths of the boundary. The result of the perimeter is always a linear measure in units.
We can compute the perimeter of a rectangle by adding up its four dimensions as follows:
Length = 13 inches
Width = 9 inches
Perimeter = 2(L + W)
= 2(13 + 9)
= 44 inches
Thus, this cake has Option D as the length of the border around it.
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Graph the function a ƒ(z) = 1/2 + 3.
the point (-4, f(-4)).
The graph of the function f(x) = 1/4x + 3 is attached below and the point (-x, f(-4) ) is pointed on it.
Graph:
Graph refers the visual representation of the function of set of data.
Given,
Here we have the function f(x) = 1/4x + 3
Now, we have to plot the function into the graph and we also plot the point (-4, f(-4)) on it.
By using the graphing calculator, we have plot the function f(x) = 1/4x + 3, then we get the graph like the following.
In order to point the (-4, f(-4)),
We have to find the value of f(-4), by apply the value of x as -4 in the given function then we get the values of the function as,
=> f(-4) = 1/4 (-4) + 3
=> f(-4) = -1 + 3
=> f(-4) = 2
Therefore, the point is (-4, 2).
Now we have to plot this point on the graph, and the point is on the line of the given function.
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Can you solve these two problems please
For the given angles , the measure of the missing angles are as follow:
a. m ∠POQ = 36° , m ∠POR = 62°
b. m ∠RST = 40°
As given in the question,
For the given angles , the measure of the missing angles are given as follow:
a. Q is in the interior of angle POR ,
Measure of angle POR = 2x -2
Measure of angle POQ = x + 4
Measure of QOR = 26°
From the given relation of the angles we have,
m ∠POQ + m ∠QOR = m ∠POR
⇒ x + 4 + 26° = 2x -2
⇒2x -x = (2+ 4+ 26)°
⇒ x= 32°
m ∠POQ = x + 4
= 32° + 4°
= 36°
m ∠POR = 2x -2
= 2(32) -2
= 62°
b. Q bisects angle RST
m ∠RSQ = 8x -12
m ∠RST = 10x
From the given relation we have,
8x -12 = (1/2)10x
⇒ 8x -12 = 5x
⇒8x -5x = 12
⇒3x =12
⇒ x= 4
m ∠RST = 10x
= 10(4)
= 40°
Therefore, for the given angles , the measure of the missing angles are as follow:
a. m ∠POQ = 36° , m ∠POR = 62°
b. m ∠RST = 40°
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How many seven-digit numbers can be formed from the digits of 2201213 number?
Answer:
Step-by-step explanation:
360
reducing fraction
[tex] \frac{15}{40} = \frac{3}{8} [/tex]
The reduced or lowest form of 15 / 40 is 3 / 8. The given statement is true.
First, let us understand about the reducing a fraction:
To express a fraction in the lowest terms, divide the numerator and denominator by the greatest common factor of the numerator and denominator.
We are given:
15 / 40 = 3 / 8
Let the LHS; 15 / 40
We need to write the following fraction in the lowest terms:
15 / 40
To write 15 / 40 in the lowest terms, we divide the numerator and the denominator by the greatest common factor of 15 and 40.
Since the factors of 15 are 1, 2, 3, 5, and 15 and the factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40, the greatest common factor of 15 and 40 will be 5.
So we will divide the numerator and the denominator of 15 / 40 by 5.
15 ÷ 5 = 3
40 ÷ 5 = 8
So, the reduced form of 15 / 40 is 3 / 8 which is 15 / 40 = 3 / 8.
Thus, the reduced or lowest form of 15 / 40 is 3 / 8. The given statement is true.
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What are the coordinates of the point on the directed line segment from (-7, -4)(−7,−4) to (2, -10)(2,−10) that partitions the segment into a ratio of 1 to 2?
The coordinates along the directed line segment is (-4, -6)
How to find the coordinates of the point along the directed line segment?The points are given as:
A = (-7, -4)
B = (2, -10)
The ratio on the segment can be represented as;
m : n = 1 : 2
So, we have the coordinates of the point that lies along the directed line segment to be
Point = 1/(m + n) * (mx₂ + nx₁, my₂ + ny₁)
So, we have:
Point = 1/(1 + 2) * (1 * 2 + 2 * -7, 1 * -10 + 2 * -4)
Evaluate
Point = (-4, -6)
Hence, the coordinates of the point is (-4, -6)
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Please help I was sick and missed out on class.Thank you
Answer:
-1/3
Step-by-step explanation:
Substituting into the slope formula, the slope is [tex]\frac{-6-(-5)}{-6-(-9)}=-\frac{1}{3}[/tex]
Question 6 of 9. Step 1 of 1 Correct Find the equation (in slope-intercept form) of the line with the given slope that passes through the point with the given coordina slope: 2, ordered pair: (3,-2)
The equation of the line in slope-intercept form is y = 2x-8.
According to the question,
We have the following information:
Slope of the line = 2
Points through which the line is passing = (3,-2)
We know that the following formula is used to find the equation of the line passing through a point:
y-y' = m(x-x') where m is the slope of the line
In this case, we have the followings values:
m = 2
x' = 3 and y' =-2
y-(-2) = 2(x-3)
y+2 = 2x-6
Subtracting 2 from both sides of the equation:
y = 2x-6-2
y = 2x-8
Hence, the equation of the line in slope-intercept form is y = 2x-8.
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Boubacar launches a toy from a platform. The graph below shows the height of the rocket ‘h’ in feet after ‘t’ seconds. What is the rocket’s initial height?
The initial height of the rocket is 264 feet
From the given graph
The height of the rocket is h is feet and time taken t is in seconds
The graph is defined as the pictorial representation of the mathematical equation or function.
The x axis of the graphs represents the Time in seconds
The y axis of the graph represents the height of the rocket h in feet
From the graph we can say that
At t = 0, the value of h = 264 feet
That means the height of the rocket is 264 feet when the time t = 0
Hence, the initial height of the rocket is 264 feet
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-3[-4(3-10)-12]-2(-1)
Answer:
-46
Step-by-step explanation:
i hopethis helps you!!
Which of the following values are solutions to the inequality -1 > 6x +9?
I. - 1
II. - 4
III. - 6
Pls help
The solution of the inequality -1 > 6x + 9 is x < -1.67, therefore -1, -4 and -6 are the solutions of inequality
The inequality is
-1 > 6x + 9
The inequality is the mathematical statement that shows the relationship between two expression with and inequality sign. The inequality relationships are less than, less than or equal, greater than, greater than or equal etc. The equal sign will not be a part of inequality
The inequality is
-1 > 6x + 9
Rearrange the terms
6x + 9 < -1
Subtract both sides by 9
6x + 9 - 9 < -1 - 9
6x < -10
Divide both sides by 6
6x /6 < -10/6
x < -5/3
x < -1.67
Hence, the solution of the inequality -1 > 6x + 9 is x < -1.67, therefore -1, -4 and -6 are the solutions of inequality
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