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3)Perpendicular lines An angle that has a measure of 90° is a right angle.If two lines intersect at right angles,the lines are perpendicular. d1 and d2 are perpendicular,denoted by d1_d2 . A right angle symbol in an angle of intersection indicates that the lines are perpendicular.( mấy bạn giúp mình nha minhf cảm ơn)))
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3)Perpendicular lines An angle that has a measure of 90° is a right angle.If two lines intersect at right angles,the lines are perpendicular. d1 and d2 are perpendicular,denoted by d1_d2 . A right angle symbol in an angle of intersection indicates that the lines are perpendicular.( mấy bạn giúp mình nha minhf cảm ơn)))
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3)Perpendicular lines An angle that has a measure of 90° is a right angle.If two lines intersect at right angles,the lines are perpendicular. d1 and d2 are perpendicular,denoted by d1_d2 . A right angle symbol in an angle of intersection indicates that the lines are perpendicular.( mấy bạn dịch giúp mình nha mình cảm ơn)))
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If the sum of two 2-digit numbers ab and ac and a 1-digit number d is 30, and d>b>c>A . Find ab
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?
We have two circles (A; 3cm) and (B; 2cm) intersecting at C, D. AB = 4cm. The circles with center A, B intersect segment AB at K, I. respectively.
a, Calculate CA, CB, DA, DB.
b, Is I the midpoint of segment AB?
c, Calculate IK.
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Given that 511 is the sum of two prime numbers a and a<b. What is the value of a ?
Dear Quan, My parents and I are having the best holiday of our life! We are in Vung Tau Beach, one of (26)________ beaches in Viet Nam. Although it is smaller than Qui Nhon Beach, and there seems to be more interesting things (27) ________ than in Qui Nhon. In addition, the people here seem to be friendlier than (28) ________ in other cities. (29) __________ in one of the most modern hotels. Its (30) __________ and cool, and many people say that its the best hotel in this city. Question 26: A. l...
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Dear Quan, My parents and I are having the best holiday of our life! We are in Vung Tau Beach, one of (26)________ beaches in Viet Nam. Although it is smaller than Qui Nhon Beach, and there seems to be more interesting things (27) ________ than in Qui Nhon. In addition, the people here seem to be friendlier than (28) ________ in other cities. (29) __________ in one of the most modern hotels. It's (30) __________ and cool, and many people say that it's the best hotel in this city. Question 26: A. lovely B. the loveliest C. the lovely D. the most lovely
Question 27:
A. doing
B. do
C. to do
D. and do
Question 28:
A. that
B. this
C. those
D. these
Question 29:
A. We stay
B. We are staying
C. They stay
D. They are staying
30: A. wide
B. large
C. big
D. all are correct
Question 2:The number of factors of 120 isQuestion 5:Find four integer numbers a,b,c,d such thata + b + c + d 1a + c + d 2a + b + d 3a + b + c 4Answer: (a;b;c;d)() Question 6:The 215th term of the expression A1-7+13-19+25-31+⋯ isQuestion 7:A natural number will be increased by 9 times ifthe digit 0 is written between tens digit and units digit.The number isQuestion 8:Calculate: 1×2+2×3+⋯+100×101Question 9:The root of the equation (x+1)+(x+2)+(x+3)+⋯+(x+100)5750 is xQuestion 10:The sum of di...
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Question 2:
The number of factors of 120 is
Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=()
Question 6:
The 215th term of the expression A=1-7+13-19+25-31+⋯ is
Question 7:
A natural number will be increased by 9 times ifthe digit 0 is written between tens digit and units digit.The number is
Question 8:
Calculate: 1×2+2×3+⋯+100×101=
Question 9:
The root of the equation (x+1)+(x+2)+(x+3)+⋯+(x+100)=5750 is x=
Question 10:
The sum of digits of 31000 is A,the sum of digits of A is B,and the sum of digits of B is C.The value of C is