The displacement between t = 0 and t = 3 is 45 meters, so the correct option is d.
How to find the displacement?The displacement is defined as the difference between the final position and the initial position.
The initial position is what we get when we evaluate in t = 0.
s = 0^3 -18*0^2+60*0 = 0
The initial position is 0 meters.
The initial position is what we get when we evaluate in t = 3.
s = 3^3 -18*3^2+60*3 = 45
The final position is 45 meters.
Then the displacement is:
D = 45m - 0m = 45m
The correct option is d.
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How many natural numbers between $150$ and $300$ are divisible by $9$?
Answer:
There are 17 natural numbers divisible.
There are 17 natural numbers between 150 and 300 that are divisible by 9.
To find the number of natural numbers between 150 and 300 that are divisible by 9, we need to find the count of multiples of 9 within this range.
The first multiple of 9 greater than or equal to 150 is 153 (9 x 17), and the last multiple of 9 less than or equal to 300 is 297 (9 x 33).
Now, we can calculate the number of multiples of 9 between 153 and 297 (inclusive):
Number of multiples of 9 = (Last multiple - First multiple) / 9 + 1
Number of multiples of 9 = (297 - 153) / 9 + 1
Number of multiples of 9 = 144 / 9 + 1
Number of multiples of 9 = 16 + 1
Number of multiples of 9 = 17
So, there are 17 natural numbers between 150 and 300 that are divisible by 9.
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-6 - (2x + 7) = -2(x +6) -1
Answer:
Infinite solutions
Step-by-step explanation:
You can put in any number for x and the 2 sides of the equation will equal each other.
Answer:
The equation has not solution, both parts of the equation correspond to the same line.
Step-by-step explanation:
-6 -(2x+7) = -2(x+6) - 1
-6 -2x - 7 = (-2*x + (-2*6)) - 1
-6 - 2x - 7 = -2x - 12 - 1
-2x - 13 = -2x - 13
-2x = - 2x
P (-7, 1) T(x,y)= (x+9, y - 3) find the image of the given point under the given translation
[tex](-7+9, 1-3)=\boxed{(2, -2)}[/tex]
The answer is (2,-2).
What do we mean by translation?Each point in a figure is moved the same distance in the same direction using a type of transformation known as translation.A transformation known as a translation involves shifting each point in a figure by the same amount and in the same direction. For instance, this transformation shifts the parallelogram 3 units upward and 5 units to the right.A transformation in geometry is an action that moves, flips, or modifies a shape (referred to as the preimage) to produce a new shape (called the image). An example of a transformation is a translation, which moves every point in a figure uniformly and in one direction.Find the image of the given point under the given translation:
The rule of translation is (x+9, y - 3), P (-7, 1).
Here we need to add 9 from
x value is -7+9=2
y We need to subtract -3 from
y value is (1-3)=-2
So, P’=( 2,-2)
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A hamster is 2 1/2 inches long a rabbit is 3 1/2 times as long as a hamster how long is the rabbit
AArea of a circle Take a rope, tie it at one corner of a door knob and then. find out how much area can be covered if you cart move around. Also mention the name of 2D figure obtained. Tie a stone on one end of the rope and then rotate it. . Find the area of obtained figure take the length of rope as a radius.
Answer:
A=113 cm²
Step-by-step explanation:
If the length of the rope is 6 cm
then the radius of the circle we draw is 6 cm.
Area of the circle is A = π·r²
A = π·6² ≈ 3.14· 36 ≈ 113cm²
PLS SOLVE ASAP. I will mark brainlest.
Answer:
• [tex](w \cdot u) (7)[/tex] = [tex]\bf 8[/tex]
• [tex](u \cdot w) (7)[/tex] = [tex]\bf 22[/tex]
Step-by-step explanation:
We are given:
[tex]u(x) = x^2 + 6[/tex]
[tex]w(x) = \sqrt{x + 9}[/tex].
• [tex](w \cdot u) (7)[/tex]. read as "w of u of 7", means we have to input 7 into the function [tex]u(x)[/tex], and use the output we get as input for the function [tex]w(x)[/tex] :
[tex](w \cdot u) (7)[/tex]
⇒ [tex]w(u(7))[/tex]
⇒ [tex]w(7^2 + 6)[/tex]
⇒ [tex]w(55)[/tex]
⇒ [tex]\sqrt{55 + 9}[/tex]
⇒ [tex]\sqrt{64}[/tex]
⇒ [tex]\bf 8[/tex]
• Similarly, we can evaluate [tex](u \cdot w) (7)[/tex] :
[tex](u \cdot w) (7)[/tex]
⇒ [tex]u(w(7))[/tex]
⇒ [tex]u(\sqrt{7 + 9})[/tex]
⇒ [tex]u(\sqrt{16})[/tex]
⇒ [tex]u(4)[/tex]
⇒ [tex]4^2 + 6[/tex]
⇒ [tex]\bf 22[/tex]
The answers are :
(w o u)(7) = 8
(u o w)(7) = 22
To find the first answer, substitute u(x) in w(x), and set x = 7.
u(7) = 7² + 6 u(7) = 49 + 6u(7) = 55w(u(7)) = √(55 + 9)w(u(7)) = √64w(u(7)) = 8(w o u)(7) = 8To find the second answer, substitute w(x) in u(x), and set x = 7.
w(7) = √(7 + 9)w(7) = √16w(7) = 4u(w(7)) = 4² + 6u(w(7)) = 16 + 6u(w(7)) = 22(u o w)(7) = 22Find a b, 6a 9b, |a|, and |a − b|. (simplify your vectors completely. ) a = −9, 12 , b = 6, 4
The values of a + b, 6a + 9b, |a|, and |a − b| are −3i + 16j, 0i + 108j, 15 and 17 respectively. This can be obtained by using vector addition, vector subtraction and formula to find magnitude of a vector.
Find the values of a + b, 6a + 9b, |a|, and |a − b|:Given that,
a = <−9, 12> , b = <6, 4>
These vectors can be rewritten as,
a = <−9, 12> = −9i + 12j
b = <6, 4> = 6i + 4j
To find a + b,we add both vectors a and b together,a + b = −9i + 12j + 6i + 4j
a + b = −9i + 6i + 12j + 4j
a + b = (−9 + 6)i + (12 + 4)j
a + b = −3i + 16j
To find 6a + 9b, we first find 6a and 9b then add them both together,
6a = 6 (−9i + 12j )
6a = −54i + 72j
9b = 9(6i + 4j)
9b = 54i + 36j
Now add 6a and 9b together,
6a + 9b = −54i + 72j + 54i + 36j
6a + 9b = −54i + 54i + 72j + 36j
6a + 9b = 0i + 108j
To find |a|, use the formula to find the magnitude of a vector,If a = a₁i + a₂j, |a| = √a₁² + a₂²
Here, a = −9i + 12j
|a| = √(−9)² + (12)²
|a| = √81 + 144 = √225
|a| = 15
To find |a − b|, first subtract b from a and find the magnitude of the resultant,a - b = −9i + 12j - (6i + 4j)
a - b = −9i - 6i + 12j - 4j
a - b = −15i + 8j
Now use the formula to find the magnitude of a vector,
|a − b| = √(-15)² + (8)²
|a − b| = √225 + 64 = √289
|a − b| = 17
Hence the values of a + b, 6a + 9b, |a|, and |a − b| are −3i + 16j, 0i + 108j, 15 and 17 respectively.
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Can the sides of a triangle have lengths 6, 20, and 20?
Answer:
Yes.
Step-by-step explanation:
This would be an isosceles triangle - with 2 equal sides both 20 long with a base of length 6.
A triangle can be formed from 3 line segments as long as the sum of the length of any 2 sides exceeds the length of the third side.
Find the area of a circle whose radius is 14 inches. (Use π = 3.1416.)
Question
Answer:
615.7536
Step-by-step explanation:
Remember the equation for finding the area of a circle is:
A=π[tex]r^2[/tex]
Just substitute in your radius for r and solve:
A=3.1416*[tex]14^2[/tex]
A=3.1416*196
A=615.7536
The volume of a cylindrical can of beans is 45 π cubic centimeters. if the diameter is 6 centimeters, what is the height of the can in centimeters?
Answer:
h = 5 cm
Step-by-step explanation:
Givens
d = 6cm
V = 45cubic cm
Formula
V = pi * r^2 h substitute values into the formula
Solution
d = 2*r
6 = 2*r Divide both sides by 2
6/2 = 2r / 2
3 = r
45 pi cm^3 = pi * (3)^2 * h Divide both sides by pi
45 pi/pi = pi * 9 * h / pi
45 = 9h Divide both sides by 4
45/4 = 9h/9
5 cm
A coin-operated drink machine was designed to discharge a mean of 7 ounces of coffee per cup. In a test of the machine, the discharge amounts in 18 randomly chosen cups of coffee from the machine were recorded. The sample mean and sample standard deviation were 7.04 ounces and 0.17 ounces, respectively. If we assume that the discharge amounts are normally distributed, is there enough evidence, at the 0.1 level of significance, to conclude that the true mean discharge,u, differs from ounces? Perform a two-tailed test. Then fill in the table below. I need the two critical values at the 0.1 level of significace. Also need the answers to al other questions and whether we accpe for reject.
Using the t-distribution, it is found that since the test statistic is between -1.7341 and 1.7341, we do not reject(accept) the null hypothesis, hence there is not enough evidence to conclude that the true mean discharge differs from 7 ounces.
What are the hypothesis tested?At the null hypothesis, it is tested if the mean is of 7 ounces, that is:
[tex]H_0: \mu = 7[/tex]
At the alternative hypothesis, it is tested if the mean is different of 7 ounces, that is:
[tex]H_1: \mu \neq 7[/tex]
What is the test statistic?The test statistic is given by:
[tex]t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}[/tex]
The parameters are:
[tex]\overline{x}[/tex] is the sample mean.[tex]\mu[/tex] is the value tested at the null hypothesis.s is the standard deviation of the sample.n is the sample size.The values of the parameters are given by:
[tex]\overline{x} = 7.04, \mu = 7, s = 0.17, n = 18[/tex]
Hence the value of the test statistic is found as follows:
[tex]t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}[/tex]
[tex]t = \frac{7.04 - 7}{\frac{0.17}{\sqrt{18}}}[/tex]
t = 1
What is the decision?Considering a two-tailed test, as we are testing if the mean is different of a value, with 18 - 1 = 17 df and a significance level of 0.1, the critical value is of [tex]t^{\ast} = 1.7341[/tex]
Since the test statistic is between -1.7341 and 1.7341, we do not reject(accept) the null hypothesis, hence there is not enough evidence to conclude that the true mean discharge differs from 7 ounces.
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A soap company started a promotion in which each packet of detergent powder will have 20% extra powder at the
same price, Jenna buys a 2 kg packet of the detergent powder. How much total detergent powder will be in the packet?
2.4kg.,
..
hope it helps
In a certain company, there were five candidates running for President. After the vots were tallied, it turned out that Victor, like in the election, finished in thir place, and david beat him. Greg said that he didn't come in first, but he also didn't come in last. Mac in an interview, said that in this election he wasn't able to win, but at least he was one place hight than his old rival Bill. What place did each candidate come in?
Considering the situation described, the classification of the elections is given as follows, according to their order of finish:
David, Greg, Victor, Mac, Bill.
How to find the classification of the elections?We take the situation that is described, and build the classification from it. The classification has the following format:
P1 - P2 - P3 - P4 - P5
With P1 being the first placed candidate, P2 being the second placed candidate, and so on until P5 which is the fifth placed candidate.
From the text given in this problem, we have that:
Victor finished in third place, and David beat him, hence P3 = Victor, David = P1 or P2.Greg didn't come in first nor in last, hence, considering that Victor is P3, Greg = P2 or P4.Mac didn't win, but he finished higher than Bill, hence, considering that Mac didn't win and that Victor is P3, Mac = P4, Bill = P5.From the bullet points above, we can conclude that David = P1, Greg = P2.Hence the classification of the election is given by:
David, Greg, Victor, Mac, Bill.
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A bag contains 3 red marbles, 7 blue marbles, and 2 green marbles. what is the probability of choosing a blue marble when one marble is drawn?
Answer: 7/12
Step-by-step explanation: There is a total of 3+7+2 = 12 marbles in the bag. 7 are blue marbles so there is a 7/12 chance of getting a blue marble when one marble is drawn.
Answer:
7/12
or an 84%
Step-by-step explanation:
i need this solven within the next hour please. Diego made these notes about ABC. Determine whether each answer is correct. I f an answer is incorrect, explain any errors, and provide the correct solution.
Answer:
Okay, so:
sinA = 22.5/25.5
<A = 62* (correct)
cos C = 22.5/25.5 (correct)
tanA = 22.5/12.0 = 1.875 (correct)
sinC = 12.0/25.5
tan C = 12.0/22.5 = 0.53 (correct)
Step-by-step explanation:
I'll explain the wrong ones in the comments hold on-
I'm thinking of a number. If I add 4 to the number and then multiply the result by 3,the answer is the same as subtracting 5 from the number and then multiplying the result by 2.
(a) in terms of x?
(b) solve the equation n find the number what I'm thinking of
Answer:
x=-22
Step-by-step explanation:
Let's substitute the number you are thinking of with x
(x+4)*3=(x-5)*2
3x+12=2x-10
x+12=-10
x=-22
In a mixed school, the number of girls is 375. if the boys to girls is 4:5.how many boys are in the school
Answer:
300
Step-by-step explanation:
375 divided by 5=75
Each “1”=75
4x75=300
There are 300 boys.
Hope this makes sense
Answer:
300 boys
Step-by-step explanation:
Let the number of boys = x
Girls: 375
boys : girls = 4 : 5
total in the ratio is 9
girls are 5/9 of total, and are 375
boys are 4/9 of total
5/9 x = 375
x = 375 × 9/5
x = 675
Boys are 4/9 of total.
4/9 × 675 = 300
Pick the correct answer
Please help thanks :)
Answer:
B
Step-by-step explanation:
First create the equation that has slope of -1 in the form of y=mx+b. Because the slope is -1, m=-1, so the equation is y=-x+b. Now we see that we are given the point (-3, 8) as an intersection point. Substitute x and y for -3 and 8 in our equation. With this information, our equation becomes 8=3+b. Solving, b=5. Our equation is now y=-x+5.
Simplifying all of the answer choices, we have
A. y=-x-5
B. y=-x+5
C. y=-x-5
D. and E. as what they already show
The only answer that matches is B.
Find the midpoint of the line segment joining the points (-1,-3) and (-11,10).
Answer: Midpoint=(−6 ,3.5)
Step-by-step explanation:
=(1+22,1+22)M=(x1+x22,y1+y22)=(−1+−112,−3+102)M=(−1+−112,−3+102)=(−122,72)M=(−122,72)=(−6,312)
Answer:
(-6,3.5)
Step-by-step explanation:
x = [tex]\frac{-1-11}{2}[/tex] = [tex]\frac{-12}{2}[/tex] = -6
y = [tex]\frac{-3+10}{2}[/tex] = [tex]\frac{7}{2}[/tex] = 3.5
28 grams of seeds cost $100 , and 14 grams of seeds cost $60. If you only have $70 and someone gives you $30 to buy 28 grams, how many grams of seeds would you give the person that gave you $30 if you paid $70?
Answer:
8.4 grams
Step-by-step explanation:
We have $70 to start and someone us another $30 for a total of $100. We pay $100 for 28 grams of seeds. If we assume the peron giving us $30 wants a fair share of the seeds, we would calculate an average cost per gram and use that to determine the grams of seeds that the $30 would have covered.
($100/28 grams) = $3.57/gram
($30/$3.57/gram) = 8.4 grams
Answer:
28 grams of seeds
Step-by-step explanation:
(This question is a little tricky)
Note that:
{28 grams of seeds = $100}
----------------------------------------
You have $70 already, and then someone gives you $30.
It means $70 + $30 = $100
So you have $100 now, you can buy 28 grams of seeds and give the person that gave you $30.
Hope this helps :)
Find how many matches Peter won. plss answwer (ಥ _ ಥ)
Answer:
10 is the right answer...
Step-by-step explanation:
thanks
mark me as brainlist....
If a sample mean is 32, which of the following is most likely the range of
possible values that best describes an estimate for the population mean?
Answer:
(28.36)
Step-by-step explanation:
Given △BAD AB = 3x - 4 ED = 24 CA = 12 BE = 3x Find x to the nearest hundredth.
Answer:
x = 10.67
Step-by-step explanation:
The triangles shown are similar, so corresponding sides are proportional. This lets us write a relation that can be solved for x.
SetupFor the given figure, we can write the proportion ...
AB/CA = DB/ED . . . . . . where DB = ED +BE
(3x-4)/12 = (24 +3x)/24 . . . . . . substitute given values
SolutionMultiplying by 24 gives ...
2(3x -4) = 3x +24
6x -8 = 3x +24 . . . . . eliminate parentheses
3x = 32 . . . . . . . . add 8-3x
x = 32/3 = 10 2/3 ≈ 10.67 . . . . . divide by 3 and convert to decimal
The value of x to the nearest hundredth is 10.67.
A photo below is being enlarged you a 24 negative by 30 inches current what is the scale factor being used to enlarge it
If a photo below is being enlarged you a 24 negative by 30 inches current. The scale factor being used to enlarge it is: 6.
Scale factorGiven:
Enlarged size=24 negative by 30 inches
Original size=4 in, 5 in
Using this formula
Let k represent the (ratio) scale factor being used to enlarge it
Scale factor/Enlarged size/Original size
Let plug in the formula
K=24/4
K=6
K=30/5
K=6
Therefore if a photo below is being enlarged you a 24 negative by 30 inches current. The scale factor being used to enlarge it is: 6.
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Rounding off 6 400mm
The rounding off a given number implies approximating the number to the required value. Thus the answer to the given question is 6 000 mm.
Rounding off a given number implies approximating the number to the required value. This can be done in two major ways: rounding up or rounding down.
Rounding up implies considering the required digit if it is up to or greater than 5, which turns to 1. Rounding down requires no consideration of digits less than 5 which turns to 0.
Thus considering the given question, Since the second digit is 4 which is lesser than 5, then it turns to a zero. So that;
rounding off 6 400 mm would give 6 000 mm.
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Consider the line 4x + 2y = 8.
What is the slope of a line perpendicular to this line?
m1 x m2 = - 1
Rearrange 4x + 2y = 8.
4x + 2y = 8
-4x, then ÷ 2
y = - 4x + 8 / 2
y = - 2x + 4
m1 = - 2, find reciprocal of - 2, by placing 1 over the 2
So, - 2 will become - 1/2, but multiplying this gives us a positive 1. Thus, m2 = 1/2
m1 x m2 = - 1
-2 x 1/2 = - 1
That means slope perpendicular to the line
4x + 2y = 8 is y = 1/2x, where a half is the gradient/slope.
Ans: 1/2
Hope this helps!
Use the slope formula to find the slope of the line in the graph shown above.
Question 19 options:
A)
–2
B)
2
C)
–1∕2
D)
1∕2
According to the slope formula, the slope of the line shown in the picture is equal to - 1 / 2. (Correct choice: C)
How to find the slope of a line shown in a graph
In this problem we should determine the slope associated to a line described on a Cartesian plane. This information can be found by knowing the coordinates of two points and substituting on the secant line formula:
m = Δy / Δx (1)
Where:
m - SlopeΔx - Change in the independent variable.Δy - Change in the dependent variable.After a quick inspection, we find that the points (0, 3) and (6, 0) lie on the line and the slope according to the secant line formula is:
m = (0 - 3) / (6 - 0)
m = - 3 / 6
m = - 1 / 2
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Select the correct answer. What is the value of the limit ? lim x 5 square x^2 +4
By direct evaluation, we will see that the limit is equal to 29.
How to find the limit?Here we want to find the limit of the given expression when x tends to 5.
[tex]\lim_{x \to \ 5} x^2 + 4[/tex]
We can directly evaluate the expression in x = 5 and see if we get a real value different than zero.
By direct evaluation, we get:
[tex]\lim_{x \to \ 5} x^2 + 4 = 5^2+ 4 = 29[/tex]
Notice that the limit does give a whole number, then in this way, we conclude that the limit of the given expression when x tends to 5 is equal to 29.
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Answer:
square 29
Step-by-step explanation:
The slope-intercept form given (6,-5) & perpendicular to -5x - 7y = -17.
Answer:
[tex]y=\dfrac{7}{5}x-\dfrac{67}{5}[/tex]
Step-by-step explanation:
Slope-intercept form of a linear equation:
[tex]y=mx+b[/tex]
where:
m is the slope.b is the y-intercept.Rearrange the given equation so that it is in slope-intercept form:
[tex]\implies -5x-7y=-17[/tex]
[tex]\implies -7y=5x-17[/tex]
[tex]\implies y=-\dfrac{5}{7}x+\dfrac{17}{7}[/tex]
Therefore, the slope of the given equation is -⁵/₇.
If two lines are perpendicular to each other (at right angles), the product of their slopes will be -1. Therefore, their slopes will be negative reciprocals of each other.
Therefore, the slope of the line perpendicular to the given equation is:
[tex]\sf m=\dfrac{7}{5}[/tex]
Substitute the found slope and the given point (6, -5) into the slope-intercept formula and solve for b:
[tex]\implies -5=\dfrac{7}{5}(6)+b[/tex]
[tex]\implies -5=\dfrac{42}{5}+b[/tex]
[tex]\implies b=-\dfrac{67}{5}[/tex]
Substitute the found slope and the found value of b into the slope-intercept formula to create the equation for the perpendicular line:
[tex]\implies y=\dfrac{7}{5}x-\dfrac{67}{5}[/tex]
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the sum of two numbers is 123. when the larger number is added to 5 times the smaller, the sum is 343. find the numbers.
The two numbers are 68 and 55.
Given that the sum of two numbers is 123. when the larger number is added to 5 times the smaller, the sum is 343.
We need to find the numbers,
Let's call the two numbers x and y. According to the given information, we have the following two equations:
x + y = 123 (The sum of the two numbers is 123)
x + 5y = 343 (When the larger number is added to 5 times the smaller, the sum is 343)
Now, we can solve these two equations simultaneously to find the values of x and y.
Let's rearrange equation 1 to express x in terms of y:
x = 123 - y
Substitute this value of x into equation 2:
(123 - y) + 5y = 343
Now, solve for y:
123 + 4y = 343
4y = 343 - 123
4y = 220
y = 220 / 4
y = 55
Now that we have the value of y, we can find the value of x using equation 1:
x = 123 - y
x = 123 - 55
x = 68
So, the two numbers are 68 and 55.
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