Answers
The direction of the resultant vector is approximately 320°.
We have three vectors. The magnitudes of the vectors t, u, and v are 7, 10, and 15, respectively. The angles of the vectors t, u, and v are 240°, 30°, and 310°, respectively. We have to find the angle of the resultant vector of the sum of all three vectors. To add all the three vectors, we need to split the vectors into their horizontal and vertical components. The horizontal components are 7cos(240°), 10cos(30°), and 15cos(310°). The vertical components are 7sin(240°), 10sin(30°), and 15sin(310°).
Let the horizontal and vertical components of the resultant vector be denoted by H and V, respectively. The horizontal component is H = 7cos(240°) + 10cos(30°) + 15cos(310°) = 7*(-0.5) + 10*(0.866) + 15*(0.643) = -3.5 + 8.66 + 9.645 = 14.805. The vertical component is V = 7sin(240°) + 10sin(30°) + 15sin(310°) = 7*(-0.866) + 10*(0.5) + 15*(-0.766) = -6.062 + 5 - 11.49 = -12.552. The angle of the resultant vector can be calculated by the ratio of the components as tan(θ) = V/H = -12.552/14.805 = -0.848. So, the angle "θ" is approximately equal to 320°.
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Related Questions
If a person travels at a speed of 33 m/s and travels 132 meters, how long does the trip take?
Answers
Answer: 4 seconds.
Step-by-step explanation: Simply divide 132 meters by 33 m/s. This gives you four. (as in the trip took four seconds.)
It is a uniform rectilinear movement which is one in which an object moves in a straight line, in one only direction, with a constant speed.
When we spoke of constant speed we mean that the movement retains the same speed, that is; that the object does not move faster, or slower and always at the same speed.
If a person travels at a speed of 33 m/s and travels 132 meters, how long does the trip take?We obtain the data according to the exercise.
Data:
V = 33 m/s
D = 132 m
t = ?
We have that the uniform motion formula is:
[tex]\large\displaystyle\text{$\begin{gathered}\sf V=\dfrac{d}{t}, \to where \end{gathered}$}[/tex]
[tex]\large\displaystyle\text{$\begin{gathered}\sf V=Speed \end{gathered}$}[/tex][tex]\large\displaystyle\text{$\begin{gathered}\sf D=distance \end{gathered}$}[/tex][tex]\large\displaystyle\text{$\begin{gathered}\sf T=Time \end{gathered}$}[/tex]We solve for time, since that is what we are asked to calculate. And substitute data in the formula.
[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{t=\dfrac{d}{V} } \end{gathered}$}}[/tex]
[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{t=\frac{132 \not{m}}{33 \ \frac{\not{m}}{s} } } \end{gathered}$}}[/tex]
[tex]\boxed{\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{t=4 \ s} \end{gathered}$}}}[/tex]
I brought on the trip, a time of 4 seconds.Use the distributive property to write an equivalent expression. If you get stuck, consider drawing a diagram p( 4p + 9)
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Given data:
The given expression is p( 4p + 9).
The given expression can be written as,
[tex]p(4p+9)=4p^2+9p[/tex]Thus, the simplification of the given expression is 4p^2 +9p.
The angle of elevation from ground level to the top of a water tower that is 280 ft away measures 27 degrees. What is the height of the tower?
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We can draw
x represents the height of the water tower
we have a right triangle
we can use a trigonometric function
[tex]\tan (27)=\frac{x}{280}[/tex]we need to clear x
[tex]x=\tan (27)\cdot280=142.66\text{ ft}[/tex]6) Raul received a score of 74 on a history test for which the class mean was 70 with a standard deviation of 3. He received a score of 70 on a biology test for which the class mean was 70 with standard deviation 7. On which test did he do better relative to the rest of the class?a)biology testb)history test c)the same
Answers
Solution:
The z score value is expressed as
[tex]\begin{gathered} z=\frac{x-\mu}{\sigma} \\ where \\ x\text{ is the sample score} \\ \mu\text{ is the mean score} \\ \sigma\text{ is the standard deviation of the score} \end{gathered}[/tex]Given that
[tex]\begin{gathered} History: \\ x=74 \\ \mu=70 \\ \sigma=3 \\ Biology: \\ x=70 \\ \mu=70 \\ \sigma=7 \end{gathered}[/tex]To determine which test Raul did better,
step 1: Determine the z score value for the history test.
Thus,
[tex]\begin{gathered} z_{history}=\frac{74-70}{3}=1.333333333 \\ \end{gathered}[/tex]step 2: Determine the z score value for the biology test.
[tex]z_{biology}=\frac{70-70}{7}=0[/tex]step 3: Determine the probability that he did better in the history test.
Thus, from the normal distribution table,
[tex]Pr(history)=0.9088[/tex]step 4: Determine the probability that he did better in the biology test.
From the normal distribution table,
[tex]Pr(biology)=0.5[/tex]Since the probability that he did better in history is higher than the probability he did better in the biology test, this implies that he did better in the history test, relative to the rest of the class.
The correct option is B.
A swimmer dives into the pool from a 6 foot platform modeled by the following y=x- 12x + 6. What was the maximum depth that the swimmer reached?
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The expression that models the swimmer dive is given by:
[tex]y=x^2-12x+6[/tex]Which is a parabolla, the maximum depth of the swimmer will be the value of "y" that corresponds to the vertex of this shape. We can calculate the vertex of the parabola by using the following formula:
[tex]x=-\frac{b}{2a}[/tex]Whera a is the number multiplying x² and b is the number multiplying x. Applying the data from the problem we have:
[tex]x=-\frac{(-12)}{2}=6[/tex]We can now find the depth by applying this value of x to the expression, we have:
[tex]\begin{gathered} y=(6)^2-12\cdot6+6 \\ y=36-72+6 \\ y=30 \end{gathered}[/tex]The maximum depth was 30 feet.
Find the value of X and each arc measurex =mGK=mHJ = mHGJ =mGKJ=
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where:
[tex]\begin{gathered} m\angle GK=9x-22 \\ m\angle GH=61 \\ m\angle HJ=5x-7 \\ m\angle KJ=34 \\ so\colon \\ 9x-22+61+5x-7+34=360 \\ \end{gathered}[/tex]add like terms:
[tex]14x+66=360[/tex]Solve for x:
[tex]\begin{gathered} 14x=360-66 \\ 14x=294 \\ x=\frac{294}{14} \\ x=21 \end{gathered}[/tex]Hence:
[tex]\begin{gathered} m\angle GK=9x-22=9(21)-22=167 \\ m\angle HJ=5x-7=5(21)-7=98 \end{gathered}[/tex]2.) for the line represented by the given equation, find both the X intercept and the y-intercept. (Don’t simply look on the graphing calculator ). Make sure you indicate which answer is the x-intercept and which is the y-intercept . Then graph the line
Answers
Answer:
To find the y-intercept, we substitute x=0 in the given equation:
[tex]\begin{gathered} y=\frac{1}{2}\cdot0+3, \\ y=3. \end{gathered}[/tex]Therefore, the y-intercept has coordinates (0,3).
To find the x-intercept, we set y=0, and solve for x:
[tex]\begin{gathered} 0=\frac{1}{2}x+3, \\ 0-3=\frac{1}{2}x+3-3, \\ -3=\frac{1}{2}x, \\ 2\cdot(-3)=2\cdot(\frac{1}{2}x), \\ x=-6. \end{gathered}[/tex]Therefore, the x-intercept has coordinates (-6,0).
Finally, the graph of the given equation is:
Solve the inequality and graph the solution set on a real number line. Express the solution set in interval notation|x2 + 3x - 29 > 25The solution set is(Type your answer in interval notation. Use integers or fractions for any numbers in the expression.)
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Given:
[tex]|x^2+3x-29|>25[/tex]Simply the expression 11s(4)
Answers
44s
Explanation:[tex]\begin{gathered} \text{Given:} \\ 11s(4) \end{gathered}[/tex]To simplify the expression, we will expand the parenthesis:
[tex]\begin{gathered} 11s(4)\text{ = 11s }\times\text{ 4} \\ 11\text{ and 4 are numbers so we will multiply them together} \\ 11\text{ }\times\text{ 4 = 44} \end{gathered}[/tex][tex]\begin{gathered} 11s(4)\text{ = 11 }\times\text{ s }\times\text{ 4} \\ =\text{ 44 }\times\text{ s} \\ =\text{ 44s} \end{gathered}[/tex]PART E.)In terms of the trigonometry ratios for triangle BCD, what is the length of line BD. Insert text on the triangle to show the length of line BD. When you’re done use the formula for the area of a triangle area equals 1/2 times base times height write an expression for the area of triangle ABC this when you do this base your answer on what u did in part E
Answers
Sine formula
[tex]\sin (angle)=\frac{\text{opposite side}}{hypotenuse}[/tex]Considering angle C from triangle BCD, the opposite side is side BD and the hypotenuse is side BC which length is a units. Then:
[tex]\begin{gathered} \sin (\angle C)=\frac{BD}{a} \\ \text{ Isolating BD} \\ \sin (\angle C)\cdot a=BD \end{gathered}[/tex]The area of a triangle is calculated as follows:
[tex]A=\frac{1}{2}\cdot\text{base}\cdot\text{height}[/tex]In triangle ABC the base is b units long and its height is segment BD, then the area of triangle ABC is:
[tex]\begin{gathered} A=\frac{1}{2}\cdot b\cdot BD \\ \text{ Substituting with the previous result:} \\ A=\frac{1}{2}\cdot b\cdot a\cdot\sin (\angle C) \end{gathered}[/tex]
Ned Robinson buys a microwave for $149.99, a microwave cart for $119.95, andmicrowave cookware for $19.95. The sales tax rate is 5.5 percent. What is thetotal purchase price?
Answers
Ned Robinson buys a microwave for $149.99.
A microwave cart for $119.95.
A microwave cookware for $19.95.
tax rate is 5.5 %
total amount =
[tex]\begin{gathered} 149.99+119.95+19.95=28.89 \\ \end{gathered}[/tex]thus 5.5% of 28.89 is,
[tex]\begin{gathered} 28.89\times\frac{5.5}{100} \\ =15.94 \end{gathered}[/tex]thus total bill is,
[tex]28.89+15.94=44.83[/tex]Select the correct answer. Select the place of the digit 2 in this number. 296,743 ten thousands hundred thousands one thousands hundreds tens ones
Answers
the place of the digit 2 in the number 296,743 is: hundred thousands
Lin's mom bikes at a constant speed of 12 miles per hour. Lin walks at a constantspeed 1/3 of the speed her mom bikes. Sketch a graph of both of these relationships
Answers
ANSWER :
The graph is :
EXPLANATION :
From the problem we have the rates :
Lin's mom : 12 miles per hour
Lin : 1/3 of Lin's mom, that will be 12(1/3) = 4 miles per hour
Plot the points as (hour, miles).
(1, 12) and (1, 4)
Connect the points with the origin (0, 0)
That will be :
The black line represents Lin's mom and the orange line represents Lin.
A geometric sequence has allpositive terms. The sum of thefirst two terms is 15 and the sumto infinity is 27.a Find the value of the commonratio.b Hence, find the first term.
Answers
a) Common ratio = 2/7
b) First term = 135/7
Explanations:The formula for finding the sum of a geometric progression is expressed as:
[tex]S_n=\frac{a(r^n-1)}{r-1}[/tex]Since the sum of the first two terms is 15, then
S2 = 15
n = 2
Substitute into the formula:
[tex]\begin{gathered} S_2=\frac{a\mleft(r^2-1\mright)}{r^{}-1} \\ 15=\frac{a(r+1)\cancel{r-1}}{\cancel{r-1}} \\ 15=a(r+1) \end{gathered}[/tex]Also, the sum to infinity of a geometric sequence is expressed as:
[tex]\begin{gathered} S_{\infty}=\frac{a}{1-r} \\ _{} \end{gathered}[/tex]Substitute the given values into the formula:
[tex]27=\frac{a}{1-r}[/tex]Solve both expressions simultaneously
[tex]\begin{gathered} 15=a(r+1) \\ 27=\frac{a}{1-r} \end{gathered}[/tex]
Divide both expressions to have:
[tex]\frac{15}{27}=\frac{1-r}{r+1}[/tex]Cross multiply and solve for the common ratio "r"
[tex]\begin{gathered} 15(r+1)=27(1-r) \\ 15r+15=27-27r \\ 15r+27r=27-15 \\ 42r=12 \\ r=\frac{12}{42} \\ r=\frac{2}{7} \end{gathered}[/tex]Hence the value of the common ratio is 2/7
b) Get the first term of the sequence;
Using the formula:
[tex]\begin{gathered} 27=\frac{a}{1-r} \\ 27=\frac{a}{1-\frac{2}{7}} \\ 27=\frac{a}{(\frac{5}{7})} \\ a=27\times\frac{5}{7} \\ a=\frac{135}{7} \\ \end{gathered}[/tex]Hence the first term of the sequence is 135/7
Find the quotient and remainder using long division.x4 − 5x3 + x − 4 / x2 − 7x + 1
Answers
Given:
[tex]\frac{x^4-5x^3+x-4}{x^2-7x+1}[/tex]Required:
To find the quotient and remainder using long division.
Explanation:
Now
[tex]\begin{gathered} x^^2+2x+13 \\ ----------- \\ x^2-7x+1)x^4-5x^3+x-4 \\ \text{ }-x^4+7x^3-x^2 \\ --------------- \\ \text{ }+2x^3-x^2+x \\ \text{ }-2x^3+14x^2-2x \\ ---------------- \\ \text{ }+13x^2-x-4 \\ \text{ }-13x^2+91x-13 \\ ----------------- \\ \text{ }90x-17 \end{gathered}[/tex]Final Answer:
The quotient is
[tex]x^2+2x+13[/tex]The remainder is
[tex]90x-17[/tex]Solve the following system of equations graphically on the set of axes below.y = -1/3x - 4 y = 2/3x + 2
Answers
Given:
[tex]\begin{gathered} y=-\frac{1}{3}x-4 \\ y=\frac{2}{3}x+2 \end{gathered}[/tex]Therefore, the system of solution is (-6,-2)
5/3x+1/3x=13 1/3 + 8/3
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Is this correct?
Now we will add the terms of the left side
[tex]\begin{gathered} \frac{5}{3}x+\frac{1}{3}x=13\frac{1}{3}+\frac{8}{3}x \\ \frac{6}{3}x=13\frac{1}{3}+\frac{8}{3}x \end{gathered}[/tex]Now subtract 8/3 x from both sides
[tex]\frac{6}{3}x-\frac{8}{3}x=\frac{40}{3}+\frac{8}{3}x-\frac{8}{3}x[/tex][tex]-\frac{2}{3}x=\frac{40}{3}[/tex]Cancel the denominator 3 from both sides
-2x = 40
Divide two sides by -2
[tex]\frac{-2x}{-2}=\frac{40}{-2}[/tex]x = -20
In the figure, BC||DE Angles_____1.CAF and EFA2.GAC and DFE3.CAF and EFH4.GAB and EFAare congruent______1.By the linear pair Theorem.2. because they are corresponding angles of parallel lines cut by transversal.3. by the vertical angles theorem.4. by the transitive property of congruence.GAC - CAFE because they are corresponding angles of parallel lines cut by a transversal.LAFE - HFD by the Vertical Angles Theorem.GAC - HFD by the_____1. Addition 2. Subtraction3. Substitution4. TransitiveProperty of Congruence.
Answers
CAF and EFH are congruent because they are corresponding angles of parallel lines cut by transversal.
Explanation:
BC is parallel to DE
Checking the options for angles that are congruent(the same):
1) CAF and EFA
Both angles are not corrsponding angles. They are not equal
2) GAC and DFE are not equal. DFE is a straight line.
3) CAF and EFH are corresponding angles. Hence the angles are congruent.
4) GAB and EFA are not equal. Hence, they are not congruent.
Hence, CAF and EFH are congruent because they are corresponding angles of parallel lines cut by transversal.
Can you help me with this problem 5^3 x 5^1 then it says select one Add, Subtract, Multiply
Answers
Fractions and exponents
5^3 x 5^1
FIRST ADD 3+1 = 4
THEN MULTIPLY 4 times 5^4= 5x5x5x5= 625
The profit P(x) obtained by manufacturing and selling x units of a certain product is given by P(x) = 60x - x2. Determine the number of units that must be produced and sold to maximize the profit. What is the maximum profit?
Answers
Answer:
The number of units that must be produced and sold to maximize the profit is 30 units
[tex]30\text{ units}[/tex]The maximum profit is;
[tex]\text{ \$900}[/tex]Explanation:
Given that the profit P(x) obtained by manufacturing and selling x units of a certain product is given by;
[tex]P(x)=60x-x^2[/tex]The maximum point is at;
[tex]P^{\prime}(x)=0[/tex]Differentiating P(x);
[tex]\begin{gathered} P^{\prime}(x)=60-2x=0 \\ 60-2x=0 \\ 2x=60 \\ x=\frac{60}{2} \\ x=30 \end{gathered}[/tex]The number of units that must be produced and sold to maximize the profit is 30 units
Substituting x into p(x);
[tex]\begin{gathered} P(30)=60(30)-30^2 \\ P(30)=900 \end{gathered}[/tex]The maximum profit is;
[tex]\text{ \$900}[/tex]1.BhEvaluate the formula V =3O 9.6 in.³O 288 in. 3332 in.O 96 in.3for B = 9 in.² and h = 32 in.
Answers
Given -
B = 9 in²
h = 32 in
To Find -
Evaluate the formula (V) =?
Step-by-Step Explanation -
As we are given
[tex]V\text{ = }\frac{Bh}{3}[/tex]Simply putting the values in the above formula:
[tex]V\text{ = }\frac{9\times32}{3}\text{ = 3}\times32\text{ = 96 in}^3[/tex]Final Answer -
Option D. 96 in³
simplify the expression 6w + 2/3 + 3w
Answers
we have
6w + 2/3 + 3w
step 1
Combine like terms
(6w+3w)+2/3
9w+2/310 + 8x + 2 = 4x + 36
Answers
we have
10 + 8x + 2 = 4x + 36
solve for x
step 1
Combine like terms left side
12+8x=4x+36
step 2
subtract 12 both sides
8x=4x+36-12
8x=4x+24
step 3
subtract 4x both sides
4x=24
step 4
Divide by 4 both sides
x=6
the answer is x=6Write a compound inequality for the graph shown below.Use x for your variable.-10 -9 -8 -7 -6 -5 4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10xor x < 2and□<口>OOSONOS?AorX
Answers
Given:
Given that graph of the inequality.
Required:
To write a compound inequality for the given graph.
Explanation:
From the given graph,
[tex]x<-1[/tex]and x
[tex]x\ge2[/tex]Final Answer:
[tex]x<-1\text{ or }x\ge2[/tex]1. choose one of the theorems about chords of a circle and state it using your own words2. create a problem that uses the theorem you explained3. explain how to solve the problem you just did
Answers
ANSWER:
We have the following:
1. A given chord in a circle is perpendicular to a radius through its center and is a distance less than the radius of the circle.
2. A circle with center C has a radius of 5 units. If a 6-unit chord AB is drawn at a distance D from the center of the circle, determine the value of D.
3.
Given:
Radius = 5 units
Length of chord = 6 units
A radius that meets the chord at center O divides it into two equal parts. Therefore:
AO = OB = 3 units
We can apply the Pythagorean theorem on the resulting triangle COB to determine the distance D, like this:
[tex]\begin{gathered} h^2=a^2+b^2 \\ \\ h=CB=R=5 \\ \\ a=OC=D \\ \\ b=OB=3 \\ \\ \text{ We replacing:} \\ \\ 5^2=D^2+3^2 \\ \\ 25=D^2+9 \\ \\ D^2=25-9 \\ \\ D=\sqrt{16} \\ \\ D=4 \end{gathered}[/tex]Therefore, the chord is at a distance of 4 units to the center of the circle.
What is the exact solution of cos 2x? Thank you!
Answers
Answer:
119/169
Explanation:
We use the following trig identity
[tex]\cos2x=1-2\sin^2(x)[/tex]Now in our case, we know that
[tex]\sin x=-\frac{5}{13}[/tex]therefore, our formula gives
[tex]\cos2x=1-2*(\frac{5}{13})^2[/tex]which simplifies to give
[tex]\boxed{\cos2x=\frac{119}{169}.}[/tex]- Your shipping staff of 15 employees must pack an order of 240 case today. In order for each person to do an equal share of the work How many cases does each staff member need to pack to the order?
Answers
Divide the 240 cases into the 15 employees:
Then, each staff member need to pack 16 cases.The following data values represent a population. What is the variance of thepopulation? μ = 11. Use the information in the table to help you.X8101214(x-μ)²9119OA. 10B. 5O C. 11OD. 20
Answers
The variance is calculated given the formula:
[tex]\begin{gathered} Variance=\frac{\sum(x-\mu)^2}{N} \\ \\ \sum(x-\mu)^2=9+1+1+9 \\ \\ \sum(x-\mu)^2=20 \end{gathered}[/tex]The sample
Find the difference: (−1−5i)−(5−7i)
Answers
To determine the difference between complex number:
[tex](-1-5i)-(5-7i_{})[/tex]Step 1: Remove the bracket and find the difference
[tex]\begin{gathered} (-1-5i)-(5-7i_{}) \\ -1-5i-(5-7i_{}) \\ -1-5i-5+7i_{} \end{gathered}[/tex]Step2: Collect like terms
[tex]\begin{gathered} (-1-5i)-(5+7i_{}) \\ (-1-5i)-(5+7i_{} \\ -1-5-5i+7i \\ -6+2i \\ 2i-6 \end{gathered}[/tex]Hence the final answer is 2i - 6
Type the correct answer in each box. Use numerals instead of words.Sabrina is researching the growth of a population of horses on a ranch. She models the population of horses using the function below, where n is the number of years after she begins the research and b is an unknown base.
Answers
The initial number of horses is given by n=0.
Replacing on the equation:
[tex]\begin{gathered} w(0)=15\ast b^0 \\ w(0)=15\ast1 \\ w(0)=15 \end{gathered}[/tex]The initial number of horses is 15.
Now, if b= 1.35
We need to convert it to percentage:
b = 1.35 = 135%
Therefore, the growth is:
135%-100% = 35%
Then,
If b = 1.35, the annual percentage growth rate of the number of horses would be 35%.