if the line through the point (5;-3) and (-2;p) is parallel to the line y= -2x-3, what is the value of p?
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with triangle ABC, d is the line passing through B, E of AC. Via E draw straight lines parallel to AB and BC cut d at M, N. D is the intersection of ME and BC. NE lines cut AB and MC at F and K. CMR AFN triangles are in the same form as the MDC triangle
given a parallel line xy and zt. Three point A,B,C are on line xy, two point D,E are on line zt. Draws line passing through the pair of point. How many lines are there?
LÀM VẬY ĐÚNG KO???Bài thi số 1Điền kết quả thích hợp vào chỗ (...): 12:09Fill in the blank with the suitable number (Note: write decimal number with the dot between number part and fraction part. Example: 0.5)Câu 1:The succeeding number of -7 is 7Câu 2:Given that M is the midpoint of the segment AB. Calculate the length of the segment MB if AB 10cm.Answer: MB5cmCâu 3:What is the absolute value of -4?Answer: Th...
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LÀM VẬY ĐÚNG KO???
Bài thi số 1
Điền kết quả thích hợp vào chỗ (...):
12:09
Fill in the blank with the suitable number (Note: write decimal number with "the dot" between number part and fraction part. Example: 0.5)
Câu 1:
The succeeding number of -7 is 7
Câu 2:
Given that M is the midpoint of the segment AB. Calculate the length of the segment MB if AB = 10cm.
Answer: MB=5cm
Câu 3:
What is the absolute value of -4?
Answer: The absolute of -4 is4
Câu 4:
Find the value of
Answer: A=5
Câu 5:
Given that the distance from point a to point -1 on the number line is 7. Find a if a > 0.
Answer: a=6
Câu 6:
Find the opposite number of .
Answer: It is -28
Câu 7:
Find the greatest negative integer.
Answer: It is -1
Câu 8:
Given a segment AB = 4cm. Let C be a point such that A is midpoint of segment CB. Find the length of segment CA.
Answer: CA=4cm
Câu 9:
Given 20 points. Draw the lines through the 2 points of these 20 points. How many lines are there if only 3 of 20 points are aligned?
Answer: There are 188 lines.
Câu 10:
Find the smallest natural number which has exactly nine divisors.
Answer: 36
sai rồi bạn ơi!câu 1:-6;câu 5:9.con lai thi ban dung het nhe
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Let P be the intersection point of 3 internal bisectrices of a given triangle ABC. The line passing through P and perpendicular to CP intersects AC and BC at M and N. If AP=3cm, BP=4cm, compute AM/BN?
Ta có
\(\widehat{ABM}=\widehat{APC}-\widehat{MPC}=\left(90+\frac{\widehat{ABC}}{2}\right)-90=\widehat{PBC}\)
Tương tự tra có: \(\widehat{NPB}=\widehat{PAM}\)
\(\Rightarrow\Delta MAP\approx\Delta NPB\)
\(\Rightarrow\frac{AP}{PB}=\frac{MA}{NP}=\frac{MP}{NB}\)
\(\Rightarrow MA.NB=NP.MP=NP^2=MP^2\)(Dễ thấy tam giác MNC cân có CP là đường cao và đường phân giác)
Ta lại có: \(\frac{MA}{NB}=\frac{MA^2}{MA.NB}=\frac{MA^2}{NP^2}=\frac{AP^2}{PB^2}=\frac{3^2}{4^2}=\frac{9}{16}\)
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Câu 1 The function mm is defined on the real numbers by m(k) dfrac{k+2}{k+8}m(k) k+8 k+2 . What is the value of 10times m(2)10×m(2)? Answer: Câu 2 The function ff is defined on the real numbers by f(x) ax-3f(x)ax−3. What is the value of a if f(3)9f(3)9? Answer: Câu 3 The function ff is defined on the real numbers by f(x) 2x+a-3f(x)2x+a−3. What is the value of a if f(-5)11f(−5)11? Answer: Câu 4 The function ff is defined on the real numbers by f(x) 2 + x-x^2f(x)2+x−x 2 . What is the value of...
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Câu 1 The function mm is defined on the real numbers by m(k) = \dfrac{k+2}{k+8}m(k)= k+8 k+2 . What is the value of 10\times m(2)10×m(2)? Answer: Câu 2 The function ff is defined on the real numbers by f(x)= ax-3f(x)=ax−3. What is the value of a if f(3)=9f(3)=9? Answer: Câu 3 The function ff is defined on the real numbers by f(x)= 2x+a-3f(x)=2x+a−3. What is the value of a if f(-5)=11f(−5)=11? Answer: Câu 4 The function ff is defined on the real numbers by f(x) = 2 + x-x^2f(x)=2+x−x 2 . What is the value of f(-3)f(−3)? Answer: Câu 5 Given a real number aa and a function ff is defined on the real numbers by f(x)=-6\times|3x|-4f(x)=−6×∣3x∣−4. Compare: f(a)f(a) f(-a)f(−a) Câu 6 There are ordered pairs (x;y)(x;y) where xx and yy are integers such that \dfrac{5}{x}+\dfrac{y}{4}=\dfrac{1}{8} x 5 + 4 y = 8 1 Câu 7 Given a negative number kk and a function ff is defined on the real numbers by f(x)=\dfrac{6}{13}xf(x)= 13 6 x. Compare: f(k)f(k) f(-k)f(−k) Câu 8 Given a positive number kk and a function ff is defined on the real numbers by f(x)=\dfrac{-3}{4}x+4f(x)= 4 −3 x+4. Compare: f(k)f(k) f(-k)f(−k). Câu 9 A=(1+2+3+\ldots+90) \times(12 \times34-6 \times 68):(\dfrac{1}{3}+\dfrac{1}{4}+\dfrac{1}{5}+\dfrac{1}{6})=A=(1+2+3+…+90)×(12×34−6×68):( 3 1 + 4 1 + 5 1 + 6 1 )= Câu 10 Given that \dfrac{2x+y+z+t}{x}=\dfrac{x+2y+z+t}{y}=\dfrac{x+y+2z+t}{z}=\dfrac{x+y+z+2t}{t} x 2x+y+z+t = y x+2y+z+t = z x+y+2z+t = t x+y+z+2t . The negative value of \dfrac{x+y}{z+t}+\dfrac{y+z}{t+x}+\dfrac{z+t}{x+y}+\dfrac{t+x}{y+z} z+t x+y + t+x y+z + x+y z+t + y+z t+x is
Câu 1:A farmer plants 450 seeds per row in his field. How many FULL ROWS would he be able to plant with 50000 seeds?Câu 2:It takes Abby twice as long as Blair and half as long as Caitlin to ride her bike to school. If it takes Blair 10 minutes to ride her bike to school, how long does it take Caitlin to go to school?Câu 3:If you make the 8000km trip, about how much would it cost at todays prices of 3.00 dollar per liter of gas when your car gets 25km per liter?Câu 4:What is the next number in th...
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Câu 1:
A farmer plants 450 seeds per row in his field. How many FULL ROWS would he be able to plant with 50000 seeds?
Câu 2:
It takes Abby twice as long as Blair and half as long as Caitlin to ride her bike to school. If it takes Blair 10 minutes to ride her bike to school, how long does it take Caitlin to go to school?
Câu 3:
If you make the 8000km trip, about how much would it cost at today's prices of 3.00 dollar per liter of gas when your car gets 25km per liter?
Câu 4:
What is the next number in the pattern: 25, 23, 21, 19, 17, ...?
Câu 5:
What is the value of the following expression: ?
Câu 6:
The difference between two numbers is 3. Their sum is 33. What are the two numbers?
(write your answer in order from least to greatest and use ";" between the numbers)
Câu 7:
Examining the operation of how to use the number of days to find the number of beans in a classroom jar is shown the table. On day 31, how many beans would be in the jar?
Câu 8:
Use the table of values to help you find the value of 9 feet in inches.
Câu 9:
If and , what is the value of ?
Câu 10:
What is the next number in the pattern: 1, 8, 27, ...?
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If A is divided by 9 then the sum of the quotient and 9 is the greatest 2-digit number. Find the value of A.
Giải ngay ! Gải nhanh ! Giải đúng !Number 2 : The area of a rectangle ABCD is 56cm2. Given a random point E inside of ABCD. Find the total area of triangles AED and BEC. Answer: ............. cm2.Number 3 :Peter and Jacob were running. Both of them run with their constant speeds. They started at the same time and the same place. When Jacob reached the finishing line, Peter had only run 5/8 of what Jacob had run. Jacob’s speed is 75m/min (metre per minute) faster than Peter. What was Peter’s spe...
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Giải ngay ! Gải nhanh ! Giải đúng !
Number 2 : The area of a rectangle ABCD is 56cm2. Given a random point E inside of ABCD. Find the total area of triangles AED and BEC.
Answer: ............. cm2.
Number 3 :Peter and Jacob were running. Both of them run with their constant speeds. They started at the same time and the same place. When Jacob reached the finishing line, Peter had only run 5/8 of what Jacob had run. Jacob’s speed is 75m/min (metre per minute) faster than Peter. What was Peter’s speed in m/min?
Answer: ............. m/min.
Read the following passage, and answer the questions:THE GREAT WALL OF CHINAIn China, there is a wall that is 1,500 miles long. It is called the Great Wall of China. It winds uphill and down, through valleys and mountains. It was made by hand. The Great Wall of China was built from 246 to 209 BC. The people of China made it to keep out their enemies. There are watch towers all along the way. The Wall is made of brick and earth. It is high and wide on top. People can walk along the top as if it w...
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Read the following passage, and answer the questions:
THE GREAT WALL OF CHINA
In China, there is a wall that is 1,500 miles long. It is called the Great Wall of China. It winds uphill and down, through valleys and mountains. It was made by hand. The Great Wall of China was built from 246 to 209 BC. The people of China made it to keep out their enemies. There are watch towers all along the way. The Wall is made of brick and earth. It is high and wide on top. People can walk along the top as if it were a road. No other defense line has ever been made as long as the Great Wall of China.
What is it made of?
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