Bài 4: Cho tam giác ABC; AB = 3 cm; AC = 4 cm; BC = 5 cm
a) Chứng minh tam giác ABC vuông tại A
b) Phân giác của góc A cắt BC tại E. Tính BE, CE.
c) Từ E kẻ EM và EN lần lượt vuông góc với AB và AC. Hỏi tứ giác AMEN là hình gì? Tính diện tích của tứ giác AMEN.
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Answer:
my nemis Büşra ❤️ Canlarım benim
Related Questions
pomocy szybko mam problem z zadaniem i mało czasu błagam o pomoc
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a) (a+b)²=a²+2ab+b²;
b) (a+b)²=a²+2ab+b²; (a-b)(a+b)=a²-b²;
c) (a+b)²=a²+2ab+b²; (a-b)²=a²-2ab+b²
what is the slope of the line -3y=12x+6
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Answer:
Step-by-step explanation:
uhh
what type of object around in locality
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Objects commonly found in a locality include residential buildings, commercial establishments, public facilities, transportation infrastructure, landmarks, natural features, utilities, street furniture, and vehicles.
The type of objects that can be found in a locality can vary greatly depending on the specific location and its surroundings. Here are some common types of objects that can be found in a locality:
Residential Buildings: Houses, apartments, condominiums, and other types of residential structures are commonly found in localities where people live.
Commercial Establishments: Localities often have various types of commercial establishments such as stores, shops, restaurants, cafes, banks, offices, and shopping centers.
Public Facilities: Localities typically have public facilities such as schools, libraries, hospitals, community centers, parks, playgrounds, and sports facilities.
Transportation Infrastructure: Localities usually have roads, sidewalks, bridges, and public transportation systems like bus stops or train stations.
Landmarks and Monuments: Some localities may have landmarks, historical sites, monuments, or cultural attractions that represent the area's heritage or significance.
Natural Features: Depending on the locality's geographical characteristics, natural features like parks, lakes, rivers, mountains, forests, or beaches can be present.
Utilities: Localities have infrastructure for utilities such as water supply systems, electrical grids, sewage systems, and telecommunications networks.
Street Furniture: Localities often have street furniture like benches, streetlights, waste bins, traffic signs, and public art installations.
Vehicles: Various types of vehicles can be found in a locality, including cars, bicycles, motorcycles, buses, trucks, and possibly other modes of transportation.
It's important to note that the objects present in a locality can significantly differ based on factors such as urban or rural setting, cultural context, economic development, and geographical location.
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you sailed 0.032 units to the left and found treasure at 0.248 units find where the ship started
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The table below shows the cost of sending packages of various weights.
What is the cost of mailing a 4-ounce package?
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the answer is 2.24!
Step-by-step explanation: hope this helped
what is the probability of the two numbers being the same if two regular dice are thrown?
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Answer:
1/6
Step-by-step explanation:
1 and 1
2 and 2
3 and 3
4 and 4
5 and 5
6 and 6
6/36 = 1/6
Answer:
1/6.
Step-by-step explanation:
The favourable outcomes are 1,1 2,2 3,3 4,4 5,5 and 6,6 = 6 outcomes.
All the possible outcomes for 2 regular dice = 36.
Therefore the required probability = 6/36
= 1/6.
Given that cos x = 3/5 and 0
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Answer:
What do we have to do in this? Find x? Let me know I'll explain it in the comment section
The vault shown is in the shape of a cube of each side is 2y^2 feet, find its volumeThe volume of the Wally is: Simplify
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We have
Side of the cube is 2y^2 feet.
Then, The volume of a cube is given by
\(V=s^3\)Where s = side = 2y^2
So:
\(V=(2y^2)^3\)Apply the exponent law
\(\begin{gathered} V=2^3\cdot(y^2)^3 \\ V=8(y^2)^3 \end{gathered}\)Apply the property of exponents
\(V=8(y^{2\cdot3})\)Multiply
\(V=8(y^6)\)Answer: The volume is
\(8y^6\)Please Help! Here is the picture question can't be copied.
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Answer is B. Becuz (4,096)1/3 equals to 16. And so does (16×16)1/2
BOOMER GENERATION: At 84%, Boomers are the highest amongst all the generations that want to shop in-store. In a sample size of 75 people in the Boomer Generation, estimate how many of them prefer to shop in-store.
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In a sample size of 75 people in the Boomer Generation, proportionately, the estimated number of people who prefer to shop in-store is 63.
What is proportion?Proportion shows the relative number of objects or people in the whole.
Proportions are ratios equated to each other.
They are expressed as fractional values, in decimals, percentages, and fractions.
The percentage of Boomers who want to shop in-store = 84%
The sample size of the Boomer Generation = 75
The estimated number of Boomers in the sample size who want to shop in-store = 63 (75 x 84%)
Thus, 63 Boomers representing 84 percent of 75 want to shop in-store.
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9. Use the graph of the function f(x) = x³ – 7x² + 10x to
x`
identify its relative maximum and minimum.
da
-4
8
8
2
K
T
2
da
y
8
+w
8
maximum = 4.1, minimum = -8.2
maximum = 0.9, minimum = 3.8
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The extremas of the function f(x) = x³ - 7x² + 10x are given as follows:
Relative maximum: (0.88, 4.061).Relative minimum: (3.786, -8.209).What are the relative minimums and the relative maximums of a function?The relative minimums of a function are given by the points in which the function's behavior changes from decreasing to increasing, that is, where the function curves down.The relative maximums of a function, meanwhile, are given by the points in which the function's behavior changes from increasing to decreasing, that is, where the function curves up.More can be learned about extremas of a function at https://brainly.com/question/9839310
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Suppose that f is differentiable for all x and that f (x)≤2 for all x. If f(1)=2 and f(4)=8 then f(2) has the value equal to a.3 b.4 c.6 d.8
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The value of the function f(x) which is differentiable at all x, at x = 2
Or f(2) = b. 4.
What is a function?A function can be defined as the outputs for a given set of inputs.
The inputs of a function are known as the independent variable and the outputs of a function are known as the dependent variable.
Given, The function 'f' is differentiable for all x.
Now, f(1) = 2 and f(4) = 8, So, f(x) can be 2x as it is satisfying the conditions.
∴ At x = 2 or f(2) = 2(2) = 4.
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After a few rides, your friends are ready for some ice cream! You stop into Scoops to You for some ice-cream. Which is the better deal?
3 scoops for $3.69
2 scoops for $2.69
1 scoop for $1.79
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Answer:
3 scoops for $3.69 is the best deal
The measures of the angles of a triangle are shown in the figure below. Solve for x. (2x+6)° 42°
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A triangle is a shape that has a total angle of 180°.
How to solve the triangle?It's important to note that a triangle is a shape that has three sides and the total sum is equal to 180°.
In this case, we have 2x + 6 and 42°. The other angle isn't given and this can't be solved further
The sides will have been illustrated as:
= a + b + c = 180
The expression given will then be allocated for each side to solve it further.
Note that an overview was given as the information is incomplete.
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Convert the fraction to a decimal: 3/15 =
Help pleaseee
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.........
Answer:
.2
Step-by-step explanation:
Simplify the fraction: how many times does 3 go into 15? 5 times.
1/5
divide 100 by 5 then divide the quotient by 100 and you get .2
The data below is from a Case-Control study done in Ethiopia to determine risk factors associated with Tuberculosis. People with Tuberculosis were found (Cases) and compared to similar people without Tuberculosis (Controls). Smoker Non-smokerCase 42 218 Control 15 2451. Using 1% significance, would you conclude that the proportion of those with Tuberculosis who smoke is different than those without Tuberculosis who smoke? 2. From this data can you estimate the risk of developing Tuberculosis for a smoker, that is P(Tuberculosis | Smoker)? If no explain why, if yes what is the risk?
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The methods to reduce the risk of tuberculosis include Educating patients on respiratory hygiene
What is tuberculosis?
Mycobacterium tuberculosis is the bacteria that causes tuberculosis (TB). TB germs often attack the lungs, but they can attack any region of the body, including the kidney, spine, and brain.
When an infected individual coughs or sneezes, the germs that cause tuberculosis spread. The majority of people who are infected with the germs that cause tuberculosis do not show symptoms. When symptoms do appear, they are typically accompanied by a cough (sometimes blood-tinged), weight loss, night sweats, and fever.
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Yeah thanks m8 for this
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Step-by-step explanation:
the process is shown in the picture.
A boat traveled 54 km with the stream and 42 km against the stream spending a total of as much time as it would spend while travelling 96 km in a lake. Find the speed of boat while it is travelling in the lake, if the current of the river is 3 km/hour.
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Answer:
18 miles / hour
A and B are independent events, A and C are dependent. P(A|B) = 0.3, P(A|C) = 0.2. Find P(A).
Round your answer to the nearest tenth.
Answers
Answer:
P(A) = 0.3
Step-by-step explanation:
independent event:
P(A|B) = P(A) = 0.3
The value of P(A) is equal to 0.3 to the nearest tenth.
Which pair of events are called independent events?When one event's occurrence or non-occurrence doesn't affect the occurrence or non-occurrence of another event, then such events are called independent events. Comparing it with the chain rule will give
\(P(A|B) = P(A)\\P(B|A) = P(B)\)
It is showing that whether one occurred or not, the other one doesn't care about it (independence).
Given that A and B are independent events, A and C are dependent. P(A|B) = 0.3,
P(A|C) = 0.2.
We know that for the independent event:
P(A|B) = P(A)
Hence, P(A) = 0.3
The value of P(A) is equal to 0.3 to the nearest tenth.
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If 3(x - 1) - x = 3 + 2(x – 3), then x =
a. 0
b. 4
C. No solution
All Real Solutions/Infinite Solutions
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Hi there!
»»————- ★ ————-««
I believe your answer is:
All Real Solutions/Infinite Solutions
»»————- ★ ————-««
Here’s why:
⸻⸻⸻⸻
\(3(x-1)-x=3+2(x-3)\\--------------\\\rightarrow 3x - 3 - x = 3 + 2x - 6\\\\\rightarrow 2x - 3 = 3 + 2x - 6\\\\\rightarrow -3 = 3 - 6\\\\\rightarrow \boxed{-3 = -3}\)
⸻⸻⸻⸻
This is an identity; there are infinitely many solutions.
»»————- ★ ————-««
Hope this helps you. I apologize if it’s incorrect.
3. Which of these numbers, when rounded off to the nearest 1000, gives 99 000? 98 833; 99 583; 99 374; 98 476, 98 783; 99 574; 98 587
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Answer:
98,833 98,783 98,587
Step-by-step explanation:
These numbers go up to 99,000 because... the 8 in each of these numbers ask the hundreds place numbers if he can go up.
And if those numbers are 5 and above they can which leads to the 8 going up to 9 making 99,000
for the first one 98,833 it can go up because hundreds place number is a 8 so because of 8 being 5 and above it can go up.
For the second number 98,783 it can go up because the hundreds place number 7 is 5 and above so it can go up.
And for our last number 98,587 it has a 5 in it's hundreds place number so it just makes the cut to go up so those are numbers.
Sorry I'm late but I hope it can still help you actually I'm very very very very very very very very very very very very very very very very very sorry.
Hope it still helps have a great afternoon:)
The sum of two numbers is 11. The first number plus triple the second is 25. Find these two
numbers.
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Answer:
4 + 7 = 11
4 + 7(3) = 25
4 + 21 = 25
first number is 4, second is 7
I hope this helped!
Step-by-step explanation:
Determine the equation (picture).
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The line perpendicular to the equation and has the same y-intercept with another is y = - 4 / 3 x + 4.
How to find equation of a line?The equation of a line can be describe as follows:
y = mx + b
where
m = slopeb = y-interceptTherefore, lines that a perpendicular follows the rule below:
m₁m₂ = -1
Hence,
y + 6 = 3 / 4 (x - 2)
y + 6 = 3 / 4 x - 6 / 4
y = 3 / 4 x - 6 / 4 - 6
y = 3 / 4 x - 30 / 4
y = 3 / 4 x - 15 / 2
Hence,
3 / 4 m₂ = -1
m₂ = - 4 / 3
Therefore,
slope of the line is - 4 / 3
Let's find the y-intercept of the second line
4x + 5y -20 = 0
5y = -4x + 20
y = -4 / 5 x + 4
y-intercept = 4
Therefore, the line perpendicular to the equation and has the same y-intercept with another is y = - 4 / 3 x + 4.
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How many and what
type of solutions does a
quadratic have with a
discriminant = -9?
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Answer:
The value of the discriminant tells you whether the quadratic has 2 solutions, 1 solution, or no real solutions. If b2 – 4ac simplifies into a positive number, then the quadratic has 2 solutions. If b2 – 4ac simplifies into a 0, then the quadratic has 1 solution.
Step-by-step explanation:
3. Un objeto pequeño se pesa con un mismo instrumento por nueve estudiantes de una clase, obteniéndose los siguientes valores en gramos:
6.2, 6.0, 6.0, 15.3, 6.3, 6.1, 6.23, 6.15, 6.2
a) ¿Cuál sería la mejor estimación del peso del objeto?
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Answer:
Step-by-step explanation:
6.0 , 6.0 , 6.1 , 6.2 , 6.3 , 6.15 , 6.23
hope that help mark me as a brill
The original price of a 2018 Honda Shadow to the dealer is $17,715, but the dealer will pay only $16,985 after rebate. If the dealer pays Honda within 15 days, there is a 2% cash discount.
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Answer:
The final price to be paid after the 2% discount has been made will be $ 16,645.30.
Step-by-step explanation:
Since there is a 2% discount on the price of the Honda Shadow in the event that the dealer pays Honda within 15 days, and that after a rebate the price of the vehicle is $ 16,985, to obtain the value of the discount and the final amount to be paid must be calculated as follows:
16,985 x 2/100 = X
33,970 / 100 = X
339.70 = X
Thus, the discount to be made will be $ 339.70, with which the final price to be paid after the 2% discount has been made will be $ 16,645.30.
find the volume and surface area please!! please explain step by step so I understand.
Answers
In order to calculate the surface area, first let's calculate the area of the pentagon that is the base of the prism.
To do so, let's divide it in a rectangle and triangle. The rectangle has dimensions 15 ft by 9 ft, and the triangle has base 15 ft and other two sides of 8 ft.
The area of the rectangle is given by:
\(A_r=15\cdot9=135\)And the area of the triangle can be calculated with Heron's formula:
\(\begin{gathered} A_t=\sqrt[]{p(p-a)(p-b)(p-c)} \\ p=\frac{15+8+8}{2}=15.5 \\ A_t=\sqrt[]{15.5(15.5-15)(15.5-8)(15.5-8)} \\ A_t=20.88 \end{gathered}\)So the pentagon area is:
\(A_p=A_r+A_t=135+20.88=155.88\)The areas of each lateral rectangular face is:
\(\begin{gathered} A_1=15\cdot30=450 \\ A_2=A_3=30\cdot9=270 \\ A_4=A_5=30\cdot8=240 \end{gathered}\)So the surface area of the prism is:
\(\begin{gathered} S=2\cdot A_p+A_1+A_2+A_3+A_4+A_5 \\ S=311.76+450+270+270+240+240 \\ S=1781.76 \end{gathered}\)The volume can be calculated as the base area multiplied by the height of 30 ft:
\(\begin{gathered} V=A_p\cdot h \\ V=155.88\cdot30 \\ V=4676.4 \end{gathered}\)The amount of glass needed to cover the greenhouse is:
\(\begin{gathered} A=A_2+A_3+A_4+A_5 \\ A=270+270+240+240 \\ A=1020 \end{gathered}\)So the amount of glass needed is 1020 ft².
Please help me ……………
Answers
9514 1404 393
Answer:
arc SQ = 95°
Step-by-step explanation:
The measure of an inscribed angle is half the measure of the arc it subtends. Hence long arc QR is twice the measure of inscribed angle QSR.
long arc QSR = 2×95° = 190°
The sum of measures of arcs of a circle is 360°, so we have ...
arc QS +arc SR +long arc RQ = 360°
arc QS +75° +190° = 360°
arc SQ = 95° . . . . . . . . . . . . subtract 265° from both sides
The temperature in Austria one morning was 5°C at 08:00 and increased by 2°C every hour until 12:00. What will the temperature be at 11:30?
Answers
Answer:
12C
Step-by-step explanation:
4 hours from 12-8= 4 hours
4x2=8
8+5=13
13-1 C because its 30 mins difference
12C
The graph of a piecewise function is shown.
What is the range of the function?
Answers
Answer:
(c) (-∞, -2] ∪ (-1, ∞)
Step-by-step explanation:
You want the range of the piecewise function shown in the graph.
RangeThe range is the vertical extent of the graph, the set of possible output values of the function.
This graph shows a gap between y = -2 and y = -1. The value y = -2 is included in the range, but the value y = -1 is not. (That's what the open circle means.)
Hence, the range is ...
(-∞, -2] ∪ (-1, ∞)
