Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AB = 6 and AD = 2, what is the length of AC? (Note: the figure is not drawn to scale.) B 6 2 D Answer: Submit Answer
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The first step is to make a sketch of the triangle
The altitude (h= BD) of the triangle divides it into two similar right triangles and the hypothenuse, AC, into two line segments n= AD and m= DC.
The relationship between the altitude and the parts of the hypothenuse follows the ratios:
[tex]\frac{n}{h}=\frac{h}{m}[/tex]So, the first step is to determine the altitude of the triangle. To do so, you have to work with ΔABD, "h" is one of the sides of the triangle. Using the Pythagorean theorem you can determine the measure of the missing side:
[tex]a^2+b^2=c^2[/tex]Write the expression for the missing side:
[tex]\begin{gathered} b^2=c^2-a^2 \\ \sqrt[]{b^2}=\sqrt[]{c^2-a^2} \\ b=\sqrt[]{c^2-a^2} \end{gathered}[/tex]Replace c=6 and a=2
[tex]\begin{gathered} h=\sqrt[]{6^2-2^2} \\ h=\sqrt[]{36-4} \\ h=\sqrt[]{32} \\ h=4\sqrt[]{2} \end{gathered}[/tex]Now that we have determined the value of the altitude, we can calculate the value of m
[tex]\frac{n}{h}=\frac{h}{m}[/tex]Write the expression for m:
-Multiply both sides by m to take it from the denominators place:
[tex]\begin{gathered} m\cdot\frac{n}{h}=m\cdot\frac{h}{m} \\ m\cdot\frac{n}{h}=h \end{gathered}[/tex]-Multiply both sides of the equal sign by the reciprocal of n/h
[tex]\begin{gathered} m(\frac{n}{h}\cdot\frac{h}{n})=h\cdot\frac{h}{n} \\ m=\frac{h\cdot h}{n} \\ m=\frac{h^2}{n} \end{gathered}[/tex]Replace the expression with h=4√2 and n=2 and calculate the value of m
[tex]\begin{gathered} m=\frac{h^2}{n} \\ m=\frac{(4\sqrt[]{2})^2}{2} \\ m=\frac{32}{2} \\ m=16 \end{gathered}[/tex]So DC=m= 16cm and AD=n= 2cm, now you can determine the measure of the hypothenuse:
[tex]\begin{gathered} AC=AD+DC \\ AC=2+16 \\ AC=18 \end{gathered}[/tex]The hypothenuse is AC=18cm
Related Questions
Perform the following division and write the quotient in trigonometric form. Write the magnitude inround it to two decimal places if necessary.- 8i4 + 5i
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Solution
Given
[tex]\begin{gathered} \frac{-8i}{4+5i} \\ \\ \Rightarrow\frac{-8\imaginaryI}{4+5\imaginaryI}\times\frac{4-5i}{4-5i}=\frac{-32i-40}{16+25}=-\frac{40}{41}-\frac{32}{41}i \end{gathered}[/tex][tex]\begin{gathered} \text{ Let }Z=\frac{-40}{41}-\frac{32}{41}i \\ \\ \text{ Magnitude of }Z=|Z|=\sqrt{(-\frac{40}{41})^2+(-\frac{32}{41})^2} \\ \\ \Rightarrow|Z|=\frac{8\sqrt{41}}{41} \end{gathered}[/tex]#13 how many seconds will it take for a ball dropped from a window 144 feet high to hit the ground below?
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Question 13.
Given:
Height = 144 feet.
Let's determine how many seconds it will take for a ball dropped from a window of the given height to hit the ground.
Here, we have the equation:
[tex]y=-16x^2+144[/tex]Where:
y represents the height of the ball after x seconds.
Now, when the ball hits the ground, the height will be 0 ft.
Thus, to find the time at 0 ft, substitute 0 for y and solve for x:
[tex]\begin{gathered} 0=-16x^2+144 \\ \\ 16x^2=144 \end{gathered}[/tex]Divide both sides by 16:
[tex]\begin{gathered} \frac{16x^2}{16}=\frac{144}{16} \\ \\ x^2=9 \end{gathered}[/tex]Take the square root of both sides:
[tex]\begin{gathered} \sqrt{x^2}=\sqrt{9} \\ \\ x=3 \end{gathered}[/tex]Therefore, it will take the ball 3 seconds to hit the ground.
ANSWER:
• (a). y = -16t² + 144
• (b). 3 seconds
Is 2/9 equal to a terminating decimal or a repeating decimal?
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Since the denominator of 2/9 is 9, 2/9 is equal to a repeating decimal.
[tex]\frac{2}{9}=0.222222\ldots=0.\bar{2}[/tex]Answer: repeating decimal
Joanie believes that you cannot use cross products to solve the proportion 50 / 3 equals 75 over x 4x she says that if you multiply both sides of the equation by X you get 50 x / 3 equals 75 then if you multiply both sides of the equation by 3 you get 50 x equals 75 which is a different equation then you would get if you cross multiply what mistake did Yuri make in her reasoning?
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The proportion is shown below and we cross multiply, do algebra, to solve it.
[tex]\begin{gathered} \frac{50}{3}=\frac{75}{x} \\ 50x=3\cdot75 \\ 50x=225 \\ x=\frac{225}{50} \\ x=\frac{9}{2} \end{gathered}[/tex]If you read the question, so will see this part:
if you multiply both sides of the equation by 3 you get 50 x equals 75
This is the part where there is a problem. You did say to multiply by 3 (both sides). But don't multiply the right hand side of "75" mistakenly.
The last part of this line should be "equals 75 times 3"
This is the mistake.
Elaine is starting at point A, she wants to get to point B. She is only allowed to move along the arrows, how many different paths could she take?
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if we count the paths we have:
1. A to B the top part
2. Ato B the bottom part
3. we look after that A first top arrow, down one arrow and a straight line
and so on
i counted 12 different ways
231 students of the Brooklyn Public Library went on a field trip. Some students rode in vans that hold 7 students each, and some students rode in buses that hold 25 students each. How many of each type of vehicle did the students ride in if there were 15 total vehicles? *
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We have the next information
In total, we have 231 students
van--- 7 students
bus - 25 students
in total, we have 15 vehicles
So our first equation is
x+y=15
where
x is the number of vans
y is the number of buses
The second equation is
7x+25y=231
so we will isolate the x of the first equation
x=15-y
then we substitute this equation in the second equation
7(15-y)+25y=231
105-7y+25y=231
then we sum like terms
18y=126
then we isolate the y
y=126/18
y=7
Then for the value of x we use the equation with the x isolate and we substitute the value of y
x=15-7=8
Therefore the answer is 8 vans and 7 buses
If Charlie’s Chocolate Fudge costs $1.95 perpound, how many pounds can you buy for $10.00?Set up a proportion.Make sure that the units match going across.Cross multiply to solve,X =_____ pounds for $10.
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Let's use a rule of three:
This way,
[tex]x=\frac{10\cdot1}{1.95}\Rightarrow x=5.13lbs[/tex]We could buy 5.13 pounds
2 angles are Supplementary. One angle has a measure that is 5 times the other Angle. Type in the measure of the bigger angle.
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Step 1: Let's recall that Supplementary angles are two angles with a sum of 180∘
Step 2: Let's write the equation to solve the problem.
• Let x to represent the smaller angle,
,• Let 5x to represent the bigger angle
Therefore, we have:
x + 5x = 180
6x = 180
Dividing by 6 at both sides:
6x/6 = 180/6
• x = You can calculate the value of x dividing 180 by 6 and that is the measure of the smaller angle.
,• 5x = You multiply the value of x by 5 and that's the measure of the bigger angle.
Don't forget that the sum of both angles should be 180.
The function f(x) = log2 x is transformed 3 units to the right and vertically compressed by a factor of 0.6 to become g(x).Which function represents the transformation g(x)?
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Translation h units to the right and compressed by a factor A:
[tex]f(x)=A\log_2(x-h)[/tex]Then, if g(x) is f(x) after the given transformations, it has the next equation:
[tex]\begin{gathered} g(x)=0.6\log_2(x-3) \\ \\ g(x)=\frac{3}{5}\log_2(x-3) \end{gathered}[/tex]Answer: last option3.5% of 300 is what number
Answers
To find 3.5% of 300, we have to multiply 0.035 by 300.
[tex]0.035\times300=10.5[/tex]Hence, the answer is 10.5.Answer:10.5
Step-by-step
Select the correct choice below and, if necessary, fill in the answer box to complete your choiceO A. The function is continuous on(Type your answer in interval notation.)0 B. The function is not continuous
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From the given image, we can affirm that the function is continuous in all its domain. That's the interval:
[tex]\lbrack4,\infty)[/tex]If ∆RST ~ ∆YSZ, find the value of x.
Answers
Answer:
x = 48
Step-by-step explanation:
Function A is represented by the equation y=-2x + 1.Function B is a linear function that goes through the points shown inthe table.x 1346y 19 13 21Which statement correctly compares the rates of change of the twofunctions?O A. The rate of change of function A is-2The rate of change of function B is 4.O B. The rate of change of function A is 1.The rate of change of function B is 8.C. The rate of change of function A is 1.The rate of change of function B is 4.D. The rate of change of function A is-2The rate of change of function B is 8.
Answers
In linear functions, the rate of change is equivalent to the slope of the line. In function A we already now the slope intercept equation, which means that we already now the slope of the function.
In this case, the slope of function A is -2 so is the rate of change.
To find the rate of change of function B, we need to use 2 of the ordered pairs in the formula to find the slope of a line:
[tex]m=\frac{y2-y1}{x2-x1}[/tex]Let's choose two of the given ordered pairs and replace for them in the formula. We are going to use (1,1) and (3,9):
[tex]m=\frac{9-1}{3-1}=\frac{8}{2}=4[/tex]The slope of function B is 4 so is the rate of change.
In conclusion, the correct choice is A. The rate of change of function A is -2. The rate of change of function B is 4.
Every month Pablo earns $40 for walking his neighbors dog after school how much does he earn from his job in one year?
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We know that Pablo earns $40 every month.
Then, to calculate how much he makes in a year, we use the fact that a year has 12 months.
Then, we can write:
[tex]40\frac{\$}{\text{month}}\cdot12\text{ }\frac{months}{year}=480\frac{\$}{\text{year}}[/tex]Answer: he earns $480 per year.
4 pointsTriangle BAC is shown on the coordinate grid. The coordinates of eachvertex of the triangle are integers. Numerical answers as decimal or wholenumber only (do not write as a fraction).6AB5321с012What is the slope of BC?Your answerThis is a required question
Answers
The Solution.
The slope of line BC is given below:
[tex]\begin{gathered} \text{slope = }\frac{y_2-y_1}{x_2-x_1} \\ B(1,6)\rightarrow(x_1=1,y_1=6) \\ C(4,0)\rightarrow(x_2=4,y_2=0) \end{gathered}[/tex]Substituting the values above into the formula, we get
[tex]\text{Slope = }\frac{0-6}{4-1}=-\frac{6}{3}=-2[/tex]Thus, the correct answer is -2.
Does the coordinate (-2,5) land on the linear equation y = 2x + 9 ?yesnomaybe
Answers
Answer:
Yes
Explanation:
The coordinate (-2,5) corresponds to the point (x, y).
This means that:
x= -2 and y=5
To check if the coordinate land on the equation y=2x+9, calculate the value of y when x= -2
[tex]\begin{gathered} \text{When x=-2} \\ y=2(-2)+9 \\ =-4+9 \\ =5 \end{gathered}[/tex]Therefore, the coordinate (-2,5) land on the linear equation y = 2x + 9.
solving the formula for the indicated variable-s = lw + wh + lh, for whow do i start this problem?
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The first step we need to take in order to solve the formula for w is changing the side of all the terms that have a w in it to the left side.
[tex]\begin{gathered} s=lw+wh+lh \\ s-lw-wh=lh \end{gathered}[/tex]Then we change switch all the terms that don't have w from the left to the right.
[tex]-lw-wh=lh-s[/tex]Since we have two terms on the left with a "w" we can factor then using the common term:
[tex]w(-l-h)=lh-s[/tex]Now we divide both sides by (-l-h).
[tex]\begin{gathered} w=\frac{lh-s}{-l-h} \\ w=\frac{-lh+s}{l+h} \end{gathered}[/tex]subtract the following polynomials2x−6 and 7 x ^2 + 6 x + 4as well as7 x ^2 + 6 x + 4 and 2x-6
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We are given the following polynomials:
[tex]\begin{gathered} 2x-6 \\ 7x^2+6x+4 \end{gathered}[/tex]Now, we subtract the second polynomial from the first:
[tex]2x-6-(7x^2+6x+4)[/tex]Now, apply the distributive property on the parenthesis. To do that we change the sign of each of the terms inside:
[tex]2x-6-7x^2-6x-4[/tex]Now, we associate like terms.:
[tex](2x-6x)+(-6-4)-7x^2[/tex]Now, we solve the operations of the like terms:
[tex]-4x-10-7x^2[/tex]Since we can't simplify any further this is the final answer.
Which of the following mathematical properties is described by the statement, “whatever is done on one side of the equation must also be done on the other side of the equation”? Identity Property of AdditionAssociative PropertyCommunitive PropertyProperty of Equalitytoday guys please
Answers
Given the statement 'whatever is done on one side of the equation must also be done on the other side of the equation”, the mathematical properties that described this statement is Property of equality.
For any equality operation, whatever is done on one sides must be carried out on the other side. For example, given the equation;
3x + 3 = 5
We can subtract 3 from both sides to have;
3x+3 - 3 = 5-3
3x = 2
Then we can divide both sides by 3;
3x/3 = 2/3
From the illustration above, you can see that what we did to the left hand side of the equation, we also did for the right. Hence the correct answer is Property of Equality
( pleassee help asap ! ) what is the solution (11.4 - 10) ÷2 ?
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what is the solution (11.4 - 10) ÷2 ?
[tex]\begin{gathered} \frac{11.4-10}{2} \\ \frac{1.4}{2} \\ 0.7 \end{gathered}[/tex]The answer would be 0.7
A shipping container will be used to transport several 40-kilogram crated across the country by rail. The greatest weight that can be loaded into the container is 24500 kg.other shipments waiting 11300 kilograms have already been loaded into the container. right and solved an inequality which can be used to determine x, the number of 40 kg crates that can be loaded into the shipping container.
Answers
The greatest load that fits in the container is 24500kg
There are already 11300Kg loaded
Let x indicate the number of 40Kg crates, then 40x symbolized the total weight of the crates loaded.
You can express the inequality as
[tex]11300+40x\leq24500[/tex]From this expression we can calculate the number of crates that can be loaded as follows:
[tex]\begin{gathered} 11300+40x\leq24500 \\ 40x\leq24500-11300 \\ 40x\leq=13200 \\ \frac{40x}{40}\leq\frac{13200}{40} \\ x\leq330 \end{gathered}[/tex]You can load up to 330 crates into the container.
f(x) = -4x – 7 find the equation for the inverse function
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Answer:
[tex]f^{-1}(x)=-\frac{1}{4}(x+7)[/tex]
Step-by-step explanation:
[tex]f(x)=-4x-7 \implies x=-4f^{-1}(x)-7 \\ \\ x+7=-4f^{-1}(x) \\ \\ f^{-1}(x)=-\frac{1}{4}(x+7)[/tex]
A garden that is 10/3 of an acre is to be divided into 5 equal-size areas. What is the size of each area?
Answers
Answer:
2/3 of an acre
Explanation:
To find the size of each area, we divide the area of the garden by 5. This gives
[tex]\frac{10}{3}\div5[/tex]Now at this point we remind ourselves that if we are dividing a fraction by a number, then we can turn the division into multiplication by taking the reciprocal of the number.
The number we are dividing our fraction by in this case is 5. Now, the reciprocal of 5 is 1/5 and so we can write the above as
[tex]\frac{10}{3}\div5\Rightarrow\frac{10}{3}\times\frac{1}{5}[/tex]Multiplying the denominators together gives
[tex]\frac{10}{3}\times\frac{1}{5}=\frac{10}{3\times5}=\frac{10}{15}[/tex]Now dividing both the numerator and the denominator by 5 gives
[tex]\frac{10\div5}{15\div5}=\frac{2}{3}[/tex]Hence,
[tex]\frac{10}{3}\div5=\frac{2}{3}[/tex]Therefore, the size of each area is 2/3 of an acre.
a circle has a diameter of 10 feet what is the circumference in square feet 28.2 31.4 36.8 40.5
Answers
Given a circle has a diameter = 10 feet
The circumference of the
Refer to the line for Exercises 17-22.SU17. If RS 19 and RV = 71, find SV.18. If UV = 17 and SU17 and SUI = 38, find SV.13 and SX 30, find SV.19. If VX =20. If TW81 and VW = 35, find TV.21. If SW = 44.5 and SV44.5 and SV 37.1, find VW.22. If TU 15.9 and UW = 28.3, find TW.R====TVWX
Answers
Given:
RS=19 and RV=71
Find: SV
Explanation: SV= RV-RS
=71-19
=52
Final answer: the required value of SV is 52.
Math Literacy measurements G11 only do 5 and 6 both question are similar
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Question 5:
If we divide the total length of the trip by the rate of consumption of the vehicle, we're going to find the amount of liters needed for the trip.
[tex]\frac{250}{9.4}=26.5957447...[/tex]This is the amount of liters needed.
Question 6:
Just as we did in the previous question, first we need to find the amount of liters needed for the trip.
[tex]\frac{2500}{33}=75.7575758...[/tex]Then, using the cost per liter, we can find the total cost of the trip:
[tex]\frac{2500}{33}\times20.20=1530.30303...[/tex]The trip is going to cost R1530.30.
The function of a circle is ysquared +x?=r? where r is the radius (any number). Make a circle with a radius of 16. Where does the circle intersect the X and Y axis? What is the relationship between where the circle intersects the axes and the radius (16)? IThe function of a circle is y?+x?=r? where r is the radius (any number). Make a circle with a radius of 16. Where does the circle intersect the X and Y axis? What is the relationship between where the circle intersects the axes and the radius (16)?
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112 the circle of the radius
Step-by-step explanation:
3122
Question 5 Find the area of the parallelogram shown belo 44
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A dairy farmer wants to mix a 75% protein supplement and a standard 25% protein ration to make 1500 pounds of a high grade 45%protein ration. How manypounds of each should be use!
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Okay, here we have this:
Protein Supplement=75%--------->x pounds
Standard Protein= 25% ---------->(1500-x) pounds
Mixture 45% ----------------> 1500
75%x+25%(1500-x)=45%*1500
75x+25(1500-x)=67500
75x+37500-25x=67500
50x=30000
x=30000/50
x=600 pounds Protein Supplement
900 pounds standar Protein
help me with this question please
Answers
Part a
the given polygon has 8 sides
so
Is a octagon
Part b
The given polygon is not a regular polygon, because all their sides don't have equal lengths and their interior angles are not equals